K Series Helical-Bevel Gearbox

The K family uses a helical-bevel gear train to transfer power through a right angle. The bevel stage makes it suited to machines that need a perpendicular motor-to-output layout while retaining the character of a hardened-tooth helical transmission.

Select the structure before the designation

Selection begins with the perpendicular shaft arrangement, output direction, driven load and mounting support. The designation establishes the product family, but shaft, flange and housing dimensions require a drawing or installed-unit review before a replacement is confirmed.

Variant forms

K is the standard arrangement; KA identifies shaft-mounted use; KAF and KF cover flange-oriented variants; KH identifies the hollow-shaft form. These names are an enquiry starting point, not a dimensional interchangeability claim.

Catalogue selection tables by frame

The tables below are generated from the confirmed rows of the HaoRan RSKF catalogue. Each frame section is collapsed by default. Use the power filter to reduce the visible rows inside any open table; it does not alter the catalogue source or make a compatibility decision.

<label for=”k-power-filter”>Show motor power up to (kW)</label> <input id=”k-power-filter” data-series-filter type=”number” min=”0″ step=”any” inputmode=”decimal” placeholder=”All confirmed powers”> <button type=”button” data-clear-filter>Clear filter</button>

<details id=”k37″ class=”frame-section”> <summary>Frame 37: torque 40–225 N·m; standard and combined selections</summary>

Frame 37 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	40–225 N·m
Ratio envelope	5.36–30
Motor power	1.1–3.0 kW
Output speed	47.0–261.0 r/min
Weight	11.5–15.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 128–132.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KF37 / KA37 / KAF37	1.1	4	261	40	5.36	2720	3.5
KF37 / KA37 / KAF37	1.1	4	220	48	6.37	2830	3.0
KF37 / KA37 / KAF37	1.1	4	206	51	6.80	2870	2.9
KF37 / KA37 / KAF37	1.1	4	176	60	7.96	2970	2.6
KF37 / KA37 / KAF37	1.1	4	157	67	8.91	3040	2.4
KF37 / KA37 / KAF37	1.1	4	133	79	10.49	3140	2.0
KF37 / KA37 / KAF37	1.1	4	115	91	12.14	3220	1.75
KF37 / KA37 / KAF37	1.1	4	107	98	13.08	3260	1.70
KF37 / KA37 / KAF37	1.1	4	91	115	15.31	3330	1.50
KF37 / KA37 / KAF37	1.1	4	82	129	17.15	3370	1.40
KF37 / KA37 / KAF37	1.1	4	69	152	20.19	3420	1.20
KF37 / KA37 / KAF37	1.1	4	60	175	23.36	3440	1.10
KF37 / KA37 / KAF37	1.1	4	56	188	24.99	3440	1.05
KF37 / KA37 / KAF37	1.1	4	47	225	29.96	3420	0.90
K37 / KF37 / KA37 / KAF37	3.0	4	261	110	5.36	2090	1.30
K37 / KF37 / KA37 / KAF37	3.0	4	220	130	6.37	2080	1.10
K37 / KF37 / KA37 / KAF37	3.0	4	206	139	6.80	2080	1.10
K37 / KF37 / KA37 / KAF37	3.0	4	176	163	7.96	2040	0.95
K37 / KF37 / KA37 / KAF37	3.0	4	157	182	8.91	2000	0.90

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k47″ class=”frame-section”> <summary>Frame 47: torque 119–390 N·m; standard and combined selections</summary>

Frame 47 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	119–390 N·m
Ratio envelope	5.81–132
Motor power	0.37–3.0 kW
Output speed	10.0–241.0 r/min
Weight	18.0–22.5 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 124–132.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K47 / KF47 / KA47 / KAF47	0.37	4	13	265	104.37	7330	1.50
K47 / KF47 / KA47 / KAF47	0.37	4	11	310	121.48	6960	1.30
K47 / KF47 / KA47 / KAF47	0.37	4	10	340	131.87	6690	1.20
K47 / KF47 / KA47 / KAF47	0.55	4	30	178	46.03	7880	2.2
K47 / KF47 / KA47 / KAF47	0.55	4	28	189	48.95	7830	2.1
K47 / KF47 / KA47 / KAF47	0.55	4	24	220	56.83	7660	1.80
KF47 / KA47 / KAF47	0.55	4	19	270	69.84	7310	1.50
KF47 / KA47 / KAF47	0.55	4	18	290	75.20	7150	1.40
KF47 / KA47 / KAF47	0.55	4	16	330	85.12	6790	1.20
KF47 / KA47 / KAF47	0.55	4	15	350	90.86	6550	1.15
K47 / KF47 / KA47 / KAF47	0.75	4	44	162	31.30	7550	2.5
K47 / KF47 / KA47 / KAF47	0.75	4	39	184	35.39	7760	2.2
K47 / KF47 / KA47 / KAF47	0.75	4	35	205	39.61	7740	1.95
K47 / KF47 / KA47 / KAF47	0.75	4	30	240	46.03	7540	1.65
K47 / KF47 / KA47 / KAF47	0.75	4	28	255	48.95	7430	1.55
K47 / KF47 / KA47 / KAF47	0.75	4	24	295	56.83	7110	1.35
K47 / KF47 / KAF47	0.75	4	22	330	63.30	6790	1.20
K47 / KF47 / KAF47	0.75	4	20	365	69.84	6410	1.10
K47 / KF47 / KAF47	0.75	4	18	390	75.20	6060	1.00
KF47 / KA47 / KAF47	1.1	4	72	147	19.58	6360	2.7
KF47 / KA47 / KAF47	1.1	4	64	164	21.81	6510	2.4
KF47 / KA47 / KAF47	1.1	4	54	194	25.91	6730	2.1
KF47 / KA47 / KAF47	1.1	4	48	220	29.32	6890	1.80
KF47 / KA47 / KAF47	1.1	4	45	235	31.30	6960	1.70
KF47 / KA47 / KAF47	1.1	4	40	265	35.39	7090	1.50
KF47 / KA47 / KAF47	1.1	4	35	295	39.61	7090	1.35
KF47 / KA47 / KAF47	1.5	4	45	320	31.30	6310	1.25
KF47 / KA47 / KAF47	1.5	4	40	360	39	6360	10
KA47 / KAF47	2.2	4	155	136	9.10	4690	2.1
KA47 / KAF47	2.2	4	133	157	10.56	4810	1.80
KA47 / KAF47	2.2	4	120	175	11.77	4890	1.60
KA47 / KAF47	2.2	4	116	182	12.19	4990	1.95
KA47 / KAF47	2.2	4	89	235	15.86	5160	1.60
KA47 / KAF47	2.2	4	84	250	16.86	5190	1.50
KF47 / KAF47	3.0	4	241	119	5.81	4030	1.95
KF47 / KAF47	3.0	4	213	135	6.58	4120	1.80
KF47 / KAF47	3.0	4	190	151	7.36	4190	1.65
KF47 / KAF47	3.0	4	164	175	8.56	4270	1.55
KF47 / KAF47	3.0	4	154	186	9.10	4290	1.50
KF47 / KAF47	3.0	4	133	215	10.56	4350	1.30
KF47 / KAF47	3.0	4	119	240	11.77	4370	1.15
KF47 / KAF47	3.0	4	115	250	12.19	4490	1.40

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k57″ class=”frame-section”> <summary>Frame 57: torque 100–685 N·m; standard and combined selections</summary>

Frame 57 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	100–685 N·m
Ratio envelope	6.57–145
Motor power	0.18–5.5 kW
Output speed	6.0–218.0 r/min
Weight	22.0–29.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 122–133.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K57 / KF57 / KAF57	0.18	4	17	100	76.56	9920	6.0
K57 / KF57 / KAF57	0.18	4	15	118	90.26	9880	5.1
K57 / KF57 / KA57 / KAF57	0.18	6	9.6	178	90.26	9700	3.4
K57 / KF57 / KAF57	0.18	4	13	134	102.88	9830	4.5
K57 / KF57 / KA57 / KAF57	0.18	6	8.5	205	102.88	9620	3.0
K57 / KF57 / KAF57	0.18	4	12	141	108.29	9810	4.3
K57 / KF57 / KA57 / KAF57	0.18	6	8.0	215	108.29	9590	2.8
K57 / KF57 / KAF57	0.18	4	11	161	123.85	9750	3.7
K57 / KF57 / KA57 / KAF57	0.18	6	7.0	245	123.85	9480	2.5
K57 / KF57 / KAF57	0.18	4	9.1	189	145.14	9670	3.2
K57 / KF57 / KA57 / KAF57	0.18	6	6.0	285	145.14	9340	2.1
KF57 / KA57 / KAF57	0.37	4	20	177	69.12	9700	3.4
KF57 / KA57 / KAF57	0.37	4	18	196	76.56	9650	3.1
KF57 / KA57 / KAF57	0.37	4	15	230	90.26	9530	2.6
KF57 / KA57 / KAF57	0.37	4	13	265	102.88	9420	2.3
KF57 / KA57 / KAF57	0.37	4	13	275	108.29	9370	2.2
KF57 / KA57 / KAF57	0.37	4	11	315	123.85	9220	1.90
KF57 / KA57 / KAF57	0.37	4	9.5	370	145.14	9000	1.60
K57 / KF57 / KA57 / KAF57	0.75	4	31	230	44.43	9530	2.6
K57 / KF57 / KA57 / KAF57	0.75	4	28	255	48.89	9450	2.4
K57 / KF57 / KA57 / KAF57	0.75	4	24	300	57.42	9290	2.0
K57 / KF57 / KA57 / KAF57	0.75	4	23	315	60.81	9230	1.90
K57 / KF57 / KA57 / KAF57	0.75	4	20	360	69.12	9060	1.65
K57 / KF57 / KA57 / KAF57	0.75	4	18	395	76.56	8890	1.50
K57 / KF57 / KA57 / KAF57	0.75	4	15	470	90.26	8570	1.30
K57 / KF57 / KA57 / KAF57	0.75	4	13	535	102.88	8160	1.10
K57 / KF57 / KA57 / KAF57	0.75	4	13	560	108.29	7940	1.05
K57 / KF57 / KA57 / KAF57	0.75	4	11	645	123.85	7130	0.95
KA57 / KAF57	1.5	4	73	196	19.34	8360	9
KA57 / KAF57	1.5	4	59	245	24.05	8780	5
KA57 / KAF57	1.5	4	52	280	27.34	9010	2
KA57 / KAF57	1.5	4	39	365	35.70	9040	65
KA57 / KAF57	1.5	4	37	390	38.49	8920	1.55
KF57 / KA57 / KAF57	1.5	4	32	450	44.43	8650	1.35
KF57 / KA57 / KAF57	1.5	4	29	495	48.89	8430	1.20
KF57 / KA57 / KAF57	1.5	4	25	685	57.42	7770	1.05
KF57 / KA57 / KAF57	1.5	4	23	620	60.81	7480	0.95
K57 / KF57 / KA57 / KAF57	4.0	4	216	177	6.57	5400	1.95
K57 / KF57 / KA57 / KAF57	4.0	4	188	205	7.55	5530	1.80
K57 / KF57 / KA57 / KAF57	4.0	4	163	235	8.71	5640	1.65
K57 / KF57 / KA57 / KAF57	4.0	4	148	260	9.59	5700	1.55
K57 / KF57 / KA57 / KAF57	4.0	4	126	305	11.26	5790	1.35
K57 / KF57 / KA57 / KAF57	4.0	4	119	320	11.92	5810	1.30
K57 / KF57 / KA57 / KAF57	4.0	4	107	355	13.25	6150	1.45
K57 / KF57 / KA57 / KAF57	4.0	4	93	410	15.22	6210	1.30
K57 / KF57 / KA57 / KAF57	4.0	4	81	475	17.57	6230	1.15
K57 / KF57 / KA57 / KAF57	4.0	4	73	520	19.34	6220	1.10
K57 / KF57 / KA57 / KAF57	4.0	4	63	610	22.71	6160	1.00
KF57 / KA57 / KAF57	5.5	4	218	240	6.57	4910	1.45
KF57 / KA57 / KAF57	5.5	4	190	275	7.55	4960	1.30
KF57 / KA57 / KAF57	5.5	4	164	320	8.71	4990	1.20
KF57 / KA57 / KAF57	5.5	4	149	350	9.59	4990	1.15
KF57 / KA57 / KAF57	5.5	4	127	415	11.26	4950	1.00
KF57 / KA57 / KAF57	5.5	4	120	440	11.92	4920	0.95
KF57 / KA57 / KAF57	5.5	4	108	485	13.25	5280	1.05
KF57 / KA57 / KAF57	5.5	4	94	560	15.22	5210	0.95
KF57 / KA57 / KAF57	5.5	4	81	645	17.57	5080	0.85

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k67″ class=”frame-section”> <summary>Frame 67: torque 189–640 N·m; standard and combined selections</summary>

Frame 67 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	189–640 N·m
Ratio envelope	7.28–145
Motor power	0.25–5.5 kW
Output speed	6.3–196.0 r/min
Weight	30.0–37.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 123–133.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KF67 / KA67 / KAF67	0.25	4	13	189	102.62	13000	4.3
KF67 / KA67 / KAF67	0.25	4	12	198	108.03	13000	4.1
KF67 / KA67 / KAF67	0.25	4	11	225	123.54	13000	3.6
KF67 / KA67 / KAF67	0.25	4	9.0	265	144.79	13000	3.1
KAF67	0.37	4	18	196	76.37	13000	4.2
K67 / KF67 / KA67	0.37	8	7.6	470	90.04	12600	75
K67 / KF67 / KA67	0.37	8	6.3	560	108.03	12100	1.45
KAF67	0.37	4	11	315	123.54	13000	2
KF67 / KA67 / KAF67	0.75	4	15	465	90.04	12600	1.75
KF67 / KA67 / KAF67	0.75	4	13	560	108.03	12100	1.45
KF67 / KA67 / KAF67	0.75	4	11	640	123.54	11700	1.30
KF67 / KA67 / KAF67	5.5	4	196	265	7.28	11600	1.55
KF67 / KA67 / KAF67	5.5	4	171	305	8.37	11900	1.45
KF67 / KA67 / KAF67	5.5	4	148	355	9.66	12200	1.35
KF67 / KA67 / KAF67	5.5	4	135	390	10.63	12400	1.30
KF67 / KA67 / KAF67	5.5	4	115	460	12.48	12600	1.15

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k77″ class=”frame-section”> <summary>Frame 77: torque 365–1680 N·m; standard and combined selections</summary>

Frame 77 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	365–1680 N·m
Ratio envelope	7.24–154
Motor power	0.37–11.0 kW
Output speed	5.0–199.0 r/min
Weight	46.0–62.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 124–136.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KF77 / KA77 / KAF77	0.37	8	7.0	505	97.05	19700	3.1
KF77 / KA77 / KAF77	0.37	8	6.0	590	113.56	19500	2.6
KF77 / KA77 / KAF77	0.37	6	7.0	505	128.52	19700	5
KF77 / KA77 / KAF77	0.37	8	5.3	670	128.52	19300	2.3
KF77 / KA77 / KAF77	0.37	8	5.0	705	135.28	19300	2.2
K77 / KF77	0.55	4	14	375	97.05	19900	4.1
K77 / KF77	0.55	4	12	440	113.56	19800	3.5
K77 / KF77	0.55	4	11	495	128.52	19700	3.1
K77 / KF77	0.55	4	10	520	135.28	19700	3.0
KAF77	0.75	6	10	710	88.97	19200	2.2
KAF77	0.75	6	9.3	770	97.05	19100	2.0
KAF77	0.75	6	7.9	900	113.56	18700	1.70
KAF77	0.75	6	7.0	1020	128.52	18200	1.50
KAF77	0.75	4	10	700	135.28	19300	2.2
KAF77	0.75	6	6.7	1080	135.28	18000	1.45
KAF77	0.75	4	9.0	800	154.02	19000	1.95
KF77 / KA77 / KAF77	1.1	6	9.5	1110	97.05	17900	1.40
KF77 / KA77 / KAF77	1.1	4	12	850	113.56	18800	1.80
KF77 / KA77 / KAF77	1.1	6	8.1	1300	113.56	17000	1.20
KF77 / KA77 / KAF77	1.1	4	11	960	128.52	18400	1.60
KF77 / KA77 / KAF77	1.1	6	7.2	1470	128.52	15900	1.05
KF77 / KA77 / KAF77	1.1	4	10	1020	135.28	18300	1.55
KF77 / KA77 / KAF77	1.1	6	6.8	1540	135.28	15400	1.00
K77 / KF77 / KA77 / KAF77	1.5	4	35	405	40.04	19800	3.8
K77 / KF77 / KA77 / KAF77	1.5	4	31	460	45.16	19800	3.4
K77 / KF77 / KA77 / KAF77	1.5	4	28	520	51.18	19700	3.0
K77 / KF77 / KA77 / KAF77	1.5	4	18	795	78.07	19000	1.95
K77	1.5	4	16	900	88.97	18700	1.70
K77	1.5	4	15	990	97.05	18400	1.55
K77	1.5	4	12	1150	113.56	17700	1.35
K77	1.5	4	11	1310	128.52	16900	1.20
K77	1.5	4	10	1370	135.28	16500	1.15
KF77 / KA77 / KAF77	5.5	4	132	400	10.86	17400	2.5
KF77 / KA77 / KAF77	5.5	4	116	455	12.36	17900	2.2
KF77 / KA77 / KAF77	5.5	4	106	495	13.52	18600	2.7
KF77 / KA77 / KAF77	5.5	4	90	580	15.84	19200	2.4
KF77 / KA77 / KAF77	5.5	4	80	655	17.87	19400	2.2
KF77 / KA77 / KAF77	5.5	4	71	745	20.25	19100	2.0
KF77 / KA77 / KAF77	5.5	4	62	850	23.08	18800	1.85
KF77 / KA77 / KAF77	5.5	4	56	940	25.62	18500	1.65
KF77 / KA77 / KAF77	5.5	4	49	1070	29.27	18000	1.45
KF77 / KA77 / KAF77	5.5	4	46	1130	30.89	17800	1.35
KF77 / KA77 / KAF77	5.5	4	36	1470	40.04	15900	1.05
KF77 / KA77 / KAF77	5.5	4	32	1660	45.16	14600	0.95
KF77 / KAF77	7.5	4	198	365	7.24	15400	2.3
KF77 / KAF77	7.5	4	169	425	8.48	15900	2.1
KF77 / KAF77	7.5	4	150	480	9.56	16300	1.95
KF77 / KAF77	7.5	4	132	545	10.84	16700	1.80
KF77 / KAF77	7.5	4	116	620	12.36	17000	1.60
KF77 / KAF77	7.5	4	106	675	13.52	17800	2.0
KF77 / KAF77	7.5	4	90	795	15.84	18200	1.75
KF77 / KAF77	7.5	4	80	890	17.87	18600	1.60
KA77 / KAF77	9.2	4	199	440	7.24	14900	1.85
KA77 / KAF77	9.2	4	170	515	8.48	15400	1.70
KA77 / KAF77	9.2	4	151	585	9.56	15700	1.60
KA77 / KAF77	9.2	4	133	660	10.84	16000	1.50
KA77 / KAF77	9.2	4	117	755	12.36	16300	1.35
KA77 / KAF77	9.2	4	107	820	13.52	17000	1.60
KF77 / KA77 / KAF77	11.0	4	199	530	7.24	14500	1.55
KF77 / KA77 / KAF77	11.0	4	170	620	8.48	14800	1.45
KF77 / KA77 / KAF77	11.0	4	151	700	9.56	15100	1.35
KF77 / KA77 / KAF77	11.0	4	133	790	10.84	15300	1.25
KF77 / KA77 / KAF77	11.0	4	117	900	12.36	15500	1.10
KF77 / KA77 / KAF77	11.0	4	107	990	13.52	16300	1.35
KF77 / KA77 / KAF77	11.0	4	91	1160	15.84	16500	1.20
KF77 / KA77 / KAF77	11.0	4	81	1300	17.87	16600	1.10
KF77 / KA77 / KAF77	11.0	4	71	1480	20.25	15900	1.00
KF77 / KA77 / KAF77	11.0	4	62	1680	23.08	14400	0.90

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k87″ class=”frame-section”> <summary>Frame 87: torque 525–3330 N·m; standard and combined selections</summary>

Frame 87 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	525–3330 N·m
Ratio envelope	7.21–3107
Motor power	0.18–22.0 kW
Output speed	0.42–203.0 r/min
Weight	78.0–100.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 121–138.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KF87 / KAF87	0.37	8	4.1	850	164.34	28900	3.2
KF87 / KA87 / KAF87	0.37	6	5.2	685	174.19	28900	4.0
KF87 / KAF87	0.37	8	3.9	910	174.19	28800	3.0
KF87 / KA87 / KAF87	0.37	6	4.6	775	197.37	28900	3.5
KF87 / KA87 / KAF87	1.1	4	12	870	115.82	28800	3.1
KF87 / KA87 / KAF87	1.1	4	11	950	126.91	28800	2.8
KF87 / KA87 / KAF87	1.1	4	9.5	1110	147.32	28700	2.4
KF87 / KA87 / KAF87	1.1	4	8.5	1230	164.34	28700	2.2
KF87 / KA87 / KAF87	1.1	4	8.0	1310	174.19	28600	2.1
K87 / KF87 / KA87 / KAF87	1.5	4	16	880	86.34	28800	3.1
K87 / KF87 / KA87 / KAF87	1.5	4	14	1040	102.71	28800	2.6
K87 / KF87 / KA87 / KAF87	1.5	4	12	1180	115.82	28700	2.3
K87 / KF87 / KA87 / KAF87	1.5	4	11	1290	126.91	28600	2.1
K87 / KF87 / KA87 / KAF87	1.5	4	9.6	1500	147.32	28500	1.80
K87 / KF87 / KA87 / KAF87	1.5	4	8.6	1670	164.34	28300	1.60
K87 / KF87 / KA87 / KAF87	1.5	4	8.1	1770	174.19	28300	1.55
KF87 / KA87 / KAF87	2.2	4	22	940	63.00	28800	2.9
KF87 / KA87 / KAF87	2.2	4	20	1050	70.46	28800	2.6
KF87 / KA87 / KAF87	2.2	4	18	1180	79.34	28700	2.3
KF87 / KA87 / KAF87	2.2	4	16	1290	86.34	28600	2.1
KF87 / KA87 / KAF87	2.2	4	14	1530	102.71	28500	1.75
KF87 / KA87 / KAF87	2.2	4	12	1730	115.82	28300	1.55
KF87 / KA87 / KAF87	2.2	4	11	1890	126.91	28200	1.45
KF87 / KA87 / KAF87	2.2	4	9.6	2200	147.32	27900	1.25
KF87 / KAF87	4.0	4	18	2130	79.34	27900	1.25
KF87 / KAF87	4.0	4	16	2320	86.34	27700	1.15
KF87 / KAF87	4.0	4	14	2760	102.71	27200	1.00
KF87 / KAF87	4.0	4	12	3120	115.82	26700	0.85
KF87 / KA87 / KAF87	5.5	4	51	1020	27.88	24700	2.5
KF87 / KA87 / KAF87	5.5	4	46	1150	31.39	25200	2.3
KF87 / KA87 / KAF87	5.5	4	39	1340	36.52	25800	1.85
KF87 / KA87 / KAF87	5.5	4	32	1620	44.02	26500	1.60
KF87 / KA87 / KAF87	5.5	4	29	1810	49.16	26900	1.50
KF87 / KA87 / KAF87	5.5	4	25	2080	56.64	27300	1.30
KF87 / KA87 / KAF87	5.5	4	23	2310	63.00	27500	1.15
KF87 / KA87 / KAF87	5.5	4	20	2590	70.46	27400	1.05
KF87 / KA87 / KAF87	5.5	4	18	2910	79.34	27000	0.95
KF87 / KA87 / KAF87	5.5	4	17	3170	86.34	26600	0.85
KF87 / KA87 / KAF87	7.5	4	99	725	14.45	20700	2.9
KF87 / KA87 / KAF87	7.5	4	89	800	16.00	20600	2.2
KF87 / KA87 / KAF87	7.5	4	82	870	17.42	21500	2.5
KF87 / KA87 / KAF87	7.5	4	74	970	19.45	21900	2.4
KF87 / KA87 / KAF87	7.5	4	64	1120	22.41	22500	2.0
KF87 / KA87 / KAF87	7.5	4	57	1250	24.92	22800	2.0
KF87 / KA87 / KAF87	7.5	4	51	1400	27.88	23200	1.85
KF87 / KA87 / KAF87	7.5	4	46	1570	31.39	23500	1.70
KF87 / KA87 / KAF87	7.5	4	39	1830	36.52	23900	1.35
KF87 / KA87 / KAF87	7.5	4	32	2200	44.02	24200	1.20
KF87 / KA87 / KAF87	7.5	4	29	2460	49.16	24200	1.10
KF87 / KA87 / KAF87	7.5	4	25	2840	56.64	24200	0.95
KF87 / KA87 / KAF87	7.5	4	23	3160	63.00	24100	0.85
K87 / KF87 / KA87 / KAF87	11.0	4	200	525	7.21	16700	2.5
K87 / KF87 / KA87 / KAF87	11.0	4	174	605	8.29	17100	2.3
K87 / KF87 / KA87 / KAF87	11.0	4	144	730	10.00	17700	2.1
K87 / KF87 / KA87 / KAF87	11.0	4	129	810	11.17	18000	1.85
K87 / KF87 / KA87 / KAF87	11.0	4	115	920	12.56	18900	2.2
K87 / KF87 / KA87 / KAF87	11.0	4	100	1050	14.45	19400	2.0
K87 / KF87 / KA87 / KAF87	11.0	4	90	1170	16.00	18800	1.55
K87 / KF87 / KA87 / KAF87	11.0	4	74	1420	19.45	20100	1.60
K87 / KF87 / KA87 / KAF87	11.0	4	64	1630	22.41	20300	1.40
KA87 / KAF87	11.0	4	58	1820	24.92	20500	1.40
KA87 / KAF87	11.0	4	52	2030	27.88	20600	1.30
KA87 / KAF87	11.0	4	46	2290	31.39	20600	1.20
KA87 / KAF87	11.0	4	39	2660	36.52	20400	0.95
KF87 / KA87 / KAF87	15.0	4	202	705	7.21	15700	1.85
KF87 / KA87 / KAF87	15.0	4	176	810	8.29	16000	1.70
KF87 / KA87 / KAF87	15.0	4	146	980	10.00	16400	1.55
KF87 / KA87 / KAF87	15.0	4	116	1230	12.56	17600	1.60
KF87 / KA87 / KAF87	15.0	4	101	1420	14.45	17800	1.50
KF87 / KA87 / KAF87	15.0	4	91	1570	16.00	16800	1.15
K87 / KF87 / KA87 / KAF87	18.5	4	75	2340	19.45	16200	1.00
K87 / KF87 / KA87 / KAF87	18.5	4	59	3000	24.92	15600	0.85
K87 / KF87 / KA87 / KAF87	22	4	203	1030	7.21	14200	1.25
K87 / KF87 / KA87 / KAF87	22	4	177	1190	8.29	14300	1.20
K87 / KF87 / KA87 / KAF87	22	4	147	1430	10.00	14200	1.05
K87 / KF87 / KA87 / KAF87	22	4	131	1600	11.17	14200	0.95
K87 / KF87 / KA87 / KAF87	22	4	117	1800	12.56	15300	1.10
K87 / KF87 / KA87 / KAF87	22	4	101	2070	14.45	15100	1.00
K87 / KF87 / KA87 / KAF87	22	4	84	2500	17.42	14800	0.90
K87 / KF87 / KA87 / KAF87	22	4	75	2790	19.45	14400	0.80

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K87 / KF87 / KA87 / KAF87	0.18	4	0.56	2520	2371	27500	1.05
K87 / KF87 / KA87 / KAF87	0.18	4	0.48	2880	2728	27100	0.95
K87 / KF87 / KA87 / KAF87	0.18	4	0.42	3330	3107	26400	0.80

</div> </details>

<details id=”k97″ class=”frame-section”> <summary>Frame 97: torque 675–4960 N·m; standard and combined selections</summary>

Frame 97 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	675–4960 N·m
Ratio envelope	8.71–4669
Motor power	0.18–22.0 kW
Output speed	0.28–168.0 r/min
Weight	130.0–171.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 121–138.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K97 / KF97 / KA97 / KAF97	1.5	4	11	1260	123.93	40000	3.4
K97 / KF97 / KA97 / KAF97	1.5	6	7.4	1930	123.93	40000	2.2
K97 / KF97 / KA97 / KAF97	1.5	4	10	1430	140.28	40000	3.0
K97 / KF97 / KA97 / KAF97	1.5	6	6.6	2180	140.28	40000	1.95
K97 / KF97 / KA97 / KAF97	1.5	4	9.2	1560	153.21	40000	2.8
K97 / KF97 / KA97 / KAF97	1.5	6	6.0	2390	153.21	40000	1.80
K97 / KF97 / KA97 / KAF97	1.5	4	8.0	1790	176.05	40000	2.4
K97 / KF97 / KA97 / KAF97	1.5	6	5.2	2740	176.05	40000	1.55
KF97 / KA97 / KAF97	2.2	4	15	1440	96.80	40000	3.0
K97 / KF97 / KA97 / KAF97	2.2	6	8.9	2350	105.13	40000	1.85
KF97 / KA97 / KAF97	2.2	4	13	1570	105.13	40000	2.8
K97 / KF97 / KA97 / KAF97	2.2	6	7.6	2770	123.93	40000	1.55
KF97 / KA97 / KAF97	2.2	4	11	1850	123.93	40000	2.3
K97 / KF97 / KA97 / KAF97	2.2	6	6.7	3140	140.28	40000	1.35
KF97 / KA97 / KAF97	2.2	4	10	2090	140.28	40000	2.1
K97 / KF97 / KA97 / KAF97	2.2	6	6.1	3420	153.21	40000	1.25
KF97 / KA97 / KAF97	2.2	4	9.2	2280	153.21	40000	1.90
KF97 / KA97 / KAF97	2.2	4	8.0	2620	176.05	40000	1.65
KF97 / KA97 / KAF97	4.0	4	11	3330	123.93	40000	1.30
KF97 / KA97 / KAF97	4.0	4	10	3770	140.28	40000	1.15
KF97 / KA97 / KAF97	4.0	4	9.3	4120	153.21	40000	1.05
KF97 / KA97 / KAF97	5.5	4	30	1760	47.93	38600	2.4
KF97 / KA97 / KAF97	5.5	4	25	2080	56.55	39700	2.1
KF97 / KA97 / KAF97	5.5	4	23	2300	62.55	40000	1.85
KF97 / KA97 / KAF97	5.5	4	20	2590	70.54	40000	1.65
KF97 / KA97 / KAF97	5.5	4	18	2860	77.89	40000	1.50
KF97 / KA97 / KAF97	5.5	4	17	3180	86.52	40000	1.35
KF97 / KA97 / KAF97	5.5	4	15	3560	96.80	40000	1.20
KF97 / KA97 / KAF97	7.5	4	42	1710	34.23	34400	2.5
KF97 / KA97 / KAF97	7.5	4	37	1920	38.30	35100	2.2
KF97 / KA97 / KAF97	7.5	4	34	2100	41.87	35600	2.0
KF97 / KA97 / KAF97	7.5	4	30	2400	47.93	36400	1.80
K97 / KF97 / KA97 / KAF97	7.5	4	23	3130	62.55	37500	1.35
K97 / KF97 / KA97 / KAF97	7.5	4	20	3530	70.54	37900	1.20
K97 / KF97 / KA97 / KAF97	7.5	4	18	3900	77.89	38100	1.10
K97 / KF97 / KA97 / KAF97	7.5	4	17	4330	86.52	38300	1.00
K97 / KF97 / KA97 / KAF97	7.5	4	15	4850	96.80	38300	0.90
KF97 / KA97 / KAF97	11.0	4	64	1630	22.37	29800	2.6
KF97 / KA97 / KAF97	11.0	4	58	1800	24.75	30300	2.4
KF97 / KA97 / KAF97	11.0	4	52	2040	27.91	30800	2.1
KF97 / KA97 / KAF97	11.0	4	47	2250	30.82	31300	1.90
KF97 / KA97 / KAF97	11.0	4	42	2500	34.23	31600	1.70
KF97 / KA97 / KAF97	11.0	4	38	2790	38.30	32000	1.55
KF97 / KA97 / KAF97	11.0	4	34	3050	41.87	32200	1.40
KF97 / KAF97	15.0	4	88	1620	16.56	26600	2.7
KF97 / KAF97	15.0	4	77	1860	18.96	27200	2.3
KF97 / KAF97	15.0	4	65	2190	22.37	27700	1.95
KF97 / KAF97	15.0	4	59	2430	24.75	28000	1.75
KF97 / KAF97	15.0	4	52	2740	27.91	28300	1.55
KF97 / KAF97	15.0	4	47	3020	30.82	28400	1.40
KF97 / KAF97	15.0	4	43	3360	34.23	28500	1.30
KF97 / KAF97	15.0	4	38	3760	38.30	28500	1.15
KF97 / KAF97	15.0	4	35	4110	41.87	28400	1.05
KF97 / KAF97	15.0	4	30	4700	47.93	28100	0.90
K97 / KF97 / KA97 / KAF97	22	4	168	1250	8.71	21300	2.1
K97 / KF97 / KA97 / KAF97	22	4	141	1490	10.41	21800	1.90
K97 / KF97 / KA97 / KAF97	22	4	122	1720	11.99	23300	2.3
K97 / KF97 / KA97 / KAF97	22	4	106	1990	13.85	23700	2.2
K97 / KF97 / KA97 / KAF97	22	4	88	2370	16.56	24000	1.80
K97 / KF97 / KA97 / KAF97	22	4	77	2720	18.96	24100	1.60
K97 / KF97 / KA97 / KAF97	22	4	65	3210	22.37	24200	1.35
K97 / KF97 / KA97 / KAF97	22	4	59	3550	24.75	24100	1.20
K97 / KF97 / KA97 / KAF97	22	4	53	4000	27.91	23800	1.05
K97 / KF97 / KA97 / KAF97	22	4	48	4420	30.82	23500	0.95

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K97 / KF97 / KAF97	0.18	4	2.0	675	652	40000	6.4
K97 / KF97 / KAF97	0.18	4	1.8	755	743	40000	5.7
K97 / KF97 / KAF97	0.18	4	1.5	930	855	40000	4.6
K97 / KF97 / KAF97	0.18	4	1.4	1040	957	40000	4.1
K97 / KF97 / KAF97	0.18	4	1.2	1210	1102	40000	3.6
K97 / KF97 / KAF97	0.18	4	1.0	1380	1261	40000	3.1
K97 / KF97 / KAF97	0.18	4	0.92	1490	1430	40000	2.9
K97 / KF97 / KAF97	0.18	4	0.81	1710	1625	40000	2.5
K97 / KF97 / KAF97	0.18	4	0.71	2030	1856	40000	2.1
K97 / KF97 / KAF97	0.18	4	0.62	2290	2123	40000	1.95
K97 / KF97 / KAF97	0.18	4	0.55	2640	2419	40000	1.65
K97 / KF97 / KAF97	0.18	4	0.48	2910	2757	40000	1.50
K97 / KF97 / KAF97	0.18	4	0.42	3370	3108	40000	1.25
K97 / KF97 / KAF97	0.18	4	0.37	3860	3583	40000	1.10
K97 / KF97 / KAF97	0.18	4	0.32	4390	4082	40000	1.00
K97 / KF97 / KAF97	0.18	4	0.28	4960	4669	39900	0.85

</div> </details>

<details id=”k107″ class=”frame-section”> <summary>Frame 107: torque 1850–8890 N·m; standard and combined selections</summary>

Frame 107 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	1850–8890 N·m
Ratio envelope	8.69–143
Motor power	1.5–45.0 kW
Output speed	4.9–169.0 r/min
Weight	231.0–271.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 129–139.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KF107 / KA107 / KAF107	1.5	8	6.2	2300	112.41	65000	3.5
KF107 / KA107 / KAF107	1.5	8	4.9	2940	143.47	65000	2.7
KF107 / KA107 / KAF107	4.0	8	8.7	4380	82.61	65000	1.85
KF107 / KA107 / KAF107	4.0	8	7.9	4830	121.46	65000	1.65
KF107 / KA107 / KAF107	4.0	8	6.7	5710	143.47	65000	1.40
KF107 / KA107 / KAF107	5.5	4	17	3030	82.61	65000	2.6
KF107 / KA107 / KAF107	5.5	4	16	3340	90.96	65000	2.4
KF107 / KA107 / KAF107	5.5	4	13	4130	112.41	65000	1.95
K107 / KF107 / KA107 / KAF107	7.5	4	39	1850	37.00	53800	3.9
K107 / KF107 / KA107 / KAF107	7.5	4	25	2860	57.17	59100	2.8
K107 / KF107 / KA107 / KAF107	7.5	4	22	3330	66.52	60900	2.4
K107 / KF107 / KA107 / KAF107	7.5	4	20	3670	73.30	61900	2.2
K107 / KF107 / KA107 / KAF107	7.5	4	17	4140	82.61	63200	1.95
K107 / KF107 / KA107 / KAF107	7.5	4	14	5050	100.75	65000	1.60
K107 / KA107 / KAF107	7.5	4	13	5630	112.41	65000	1.40
K107 / KA107 / KAF107	7.5	4	10	7190	143.47	65000	1.10
KAF107	9.2	4	34	2580	42.33	54000	2.8
KAF107	9.2	4	29	3040	49.90	55700	2.6
KAF107	9.2	4	25	3490	57.17	57100	2.3
KAF107	9.2	4	22	4060	66.52	58600	1.95
KAF107	9.2	4	20	4470	73.30	59400	1.80
KAF107	9.2	4	17	5040	82.61	60400	1.60
KAF107	9.2	4	16	5550	90.96	61100	1.45
KAF107	9.2	4	14	6150	100.75	61800	1.30
KAF107	9.2	4	13	6860	112.41	62400	1.15
KF107 / KA107 / KAF107	11.0	4	17	6030	82.61	57500	1.35
KF107 / KA107 / KAF107	11.0	4	16	6630	90.96	58000	1.20
KF107 / KA107 / KAF107	11.0	4	14	7350	100.75	58300	1.10
KF107 / KA107 / KAF107	11.0	4	13	8200	112.41	58400	1.00
KF107 / KA107 / KAF107	30	4	47	6100	31.28	38000	1.10
KF107 / KA107 / KAF107	30	4	40	7210	37.00	37600	1.00
KF107 / KA107 / KAF107	30	4	35	8250	42.33	36100	0.90
KF107 / KA107 / KAF107	37	4	169	2090	8.69	30900	1.95
KF107 / KA107 / KAF107	37	4	148	2390	9.94	31400	1.75
KF107 / KA107 / KAF107	37	4	125	2820	11.73	32000	1.55
KF107 / KA107 / KAF107	37	4	109	3230	13.34	32300	1.35
KF107 / KA107 / KAF107	37	4	100	3520	14.64	34200	1.95
KF107 / KA107 / KAF107	37	4	88	4020	16.75	34500	1.75
KF107 / KA107 / KAF107	37	4	74	4740	19.74	34700	1.50
KF107 / KA107 / KAF107	37	4	65	5440	22.62	34700	1.30
KF107 / KA107 / KAF107	37	4	56	6320	26.32	34500	1.15
KF107 / KA107 / KAF107	37	4	51	6970	29.00	34200	1.05
KF107 / KA107 / KAF107	37	4	47	7520	31.28	33000	0.90
KF107 / KA107 / KAF107	37	4	40	8890	37.00	29000	0.80
KF107 / KAF107	45	4	169	2540	8.69	29300	1.60
KF107 / KAF107	45	4	148	2910	9.94	29600	1.45
KF107 / KAF107	45	4	125	3430	11.73	29900	1.25
KF107 / KAF107	45	4	109	3930	13.43	29900	1.10
KF107 / KAF107	45	4	100	4280	14.64	31900	1.60
KF107 / KAF107	45	4	88	4890	16.75	31900	1.45
KF107 / KAF107	45	4	74	5770	19.74	31700	1.25
KF107 / KAF107	45	4	65	6610	22.62	31000	1.10
KF107 / KAF107	45	4	56	7690	26.32	28300	0.95
KF107 / KAF107	45	4	51	8480	29.00	25600	0.85

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k127″ class=”frame-section”> <summary>Frame 127: torque 2090–15200 N·m; standard and combined selections</summary>

Frame 127 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	2090–15200 N·m
Ratio envelope	8.68–136
Motor power	4.0–90.0 kW
Output speed	5.3–171.0 r/min
Weight	381.0–452.0 kg

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 132–140.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K127 / KF127 / KA127 / KAF127	4.0	8	6.5	5850	110.18	82100	2.2
KF127 / KAF127	4.0	6	8.7	4380	110.18	82400	3.0
K127 / KF127 / KA127 / KAF127	4.0	8	5.9	6500	122.48	81900	2.0
KF127 / KAF127	4.0	6	7.8	4870	122.48	82300	2.7
K127 / KF127 / KA127 / KAF127	4.0	8	5.3	7220	132.14	81700	1.80
KF127 / KAF127	4.0	6	7.1	5420	136.14	82200	2.4
K127 / KF127 / KA127 / KAF127	7.5	6	11	6710	89.89	81900	1.95
K127 / KF127 / KA127 / KAF127	7.5	6	8.7	8220	110.18	81400	1.60
K127 / KF127 / KA127 / KAF127	7.5	6	7.8	9140	122.48	81000	1.40
K127 / KF127 / KA127 / KAF127	7.5	6	7.1	10200	136.14	80600	1.30
KA127 / KAF127	9.2	4	18	5000	81.98	82300	2.6
KA127 / KAF127	9.2	4	16	5480	89.89	82200	2.4
KA127 / KAF127	9.2	4	13	6720	110.18	8190	1.95
KA127 / KAF127	9.2	4	12	7470	122.48	81600	1.75
KF127 / KAF127	15.0	4	31	4690	47.82	76200	2.8
KF127 / KAF127	15.0	4	27	5300	54.07	78000	2.5
KF127 / KAF127	15.0	4	21	6960	70.95	81600	1.85
KF127 / KAF127	15.0	4	18	8040	81.98	81400	1.60
KF127 / KAF127	15.0	4	16	8820	89.89	81200	1.45
KF127 / KA127 / KAF127	15.0	4	13	10800	110.18	80300	1.20
KF127 / KA127 / KAF127	15.0	4	12	12000	122.48	79700	1.10
KF127 / KAF127	30	4	62	4660	23.91	59600	2.8
KF127 / KAF127	30	4	53	5390	27.68	61000	2.4
KF127 / KAF127	30	4	47	6110	31.37	62000	2.1
KF127 / KAF127	30	4	41	7060	36.25	63100	1.85
KF127 / KAF127	30	4	37	7830	40.19	63700	1.65
KF127 / KAF127	30	4	31	9320	47.82	64400	1.40
KF127 / KAF127	30	4	27	10500	54.07	64700	1.25
KF127 / KAF127	30	4	23	12200	62.60	64600	1.05
KF127 / KA127 / KAF127	37	4	169	2090	8.68	46600	3.5
KF127 / KA127 / KAF127	37	4	137	2580	10.74	48600	3.1
KF127 / KA127 / KAF127	37	4	115	3070	12.79	50200	2.8
KF127 / KA127 / KAF127	37	4	102	3450	14.35	52500	3.5
KF127 / KA127 / KAF127	37	4	83	4270	17.77	54500	3.0
KF127 / KA127 / KAF127	37	4	70	5080	21.15	56000	2.6
KF127 / KA127 / KAF127	37	4	62	5740	23.91	56900	2.3
KF127 / KA127 / KAF127	37	4	53	6650	27.68	57800	1.95
KF127 / KA127 / KAF127	37	4	47	7540	31.37	58500	1.70
KF127 / KA127 / KAF127	37	4	41	8710	36.25	59000	1.50
KF127 / KA127 / KAF127	45	4	169	2540	8.68	45300	2.8
KF127 / KA127 / KAF127	45	4	137	3140	10.74	47000	5
KF127 / KA127 / KAF127	45	4	115	3740	12.79	48300	3
KF127 / KA127 / KAF127	45	4	102	4190	14.35	50700	2.9
KF127 / KA127 / KAF127	45	4	83	5190	17.77	52200	2.5
KF127 / KA127 / KAF127	45	4	70	6180	21.15	53200	2.1
KF127 / KA127 / KAF127	45	4	62	6990	23.91	53800	1.85
KA127	45	4	53	8090	27.68	54200	1.60
KA127	45	4	47	9170	31.37	54400	1.40
KF127 / KA127 / KAF127	45	4	41	10600	36.25	54200	1.25
KA127	45	4	37	11700	40.19	53900	1.10
KF127 / KA127 / KAF127	45	4	31	14000	47.82	52800	0.95
KF127 / KA127 / KAF127	75	4	171	4200	8.68	40400	1.70
KF127 / KA127 / KAF127	75	4	138	5200	10.74	41000	1.55
KF127 / KA127 / KAF127	75	4	116	6190	12.79	41100	1.40
KF127 / KA127 / KAF127	75	4	103	6940	14.35	43700	1.75
KF127 / KA127 / KAF127	75	4	83	8600	17.77	43500	1.50
KF127 / KA127 / KAF127	75	4	70	10200	21.15	42900	1.25
KF127 / KA127 / KAF127	75	4	62	11600	23.91	42200	1.10
KF127 / KA127 / KAF127	75	4	53	13400	27.68	40800	0.95
KF127 / KA127 / KAF127	75	4	47	15200	31.37	39200	0.85
K127 / KF127 / KA127 / KAF127	90	4	171	5040	8.68	38000	1.45
K127 / KF127 / KA127 / KAF127	90	4	138	6240	10.74	38000	1.30
K127 / KF127 / KA127 / KAF127	90	4	116	7420	12.79	37600	1.15
K127 / KF127 / KA127 / KAF127	90	4	103	8330	14.35	40200	1.45
K127 / KF127 / KA127 / KAF127	90	4	83	10300	17.77	39200	1.25
K127 / KF127 / KA127 / KAF127	90	4	70	12300	21.15	37800	1.05
K127 / KF127 / KA127 / KAF127	90	4	62	13900	23.91	36400	0.95

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k157″ class=”frame-section”> <summary>Frame 157: torque 4510–22100 N·m; standard and combined selections</summary>

Frame 157 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KA, KAF, KF
Output torque	4510–22100 N·m
Ratio envelope	12.65–150
Motor power	7.5–132.0 kW
Output speed	6.4–117.0 r/min
Weight	Weight not yet transcribed

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 134–140.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K157 / KF157 / KA157 / KAF157	7.5	6	12	5950	79.75	116200	3.0
K157 / KF157 / KA157 / KAF157	7.5	6	10	6840	91.65	116000	2.6
K157 / KF157 / KA157 / KAF157	7.5	6	9.6	7480	100.22	115900	2.4
K157 / KF157 / KA157 / KAF157	7.5	6	7.8	9130	122.39	115500	1.95
K157 / KF157 / KA157 / KAF157	7.5	6	6.4	11200	150.41	114900	1.60
K157 / KF157 / KA157 / KAF157	11.0	4	16	6690	91.65	116000	2.7
K157 / KF157 / KA157 / KAF157	11.0	4	14	7310	100.22	115900	2.5
K157 / KF157 / KA157 / KAF157	11.0	4	12	8930	122.39	115600	2.0
K157 / KF157 / KA157 / KAF157	15.0	6	14	10400	70.38	115200	1.75
K157 / KF157 / KA157 / KAF157	15.0	6	12	11800	79.75	114800	1.55
KF157 / KA157 / KAF157	15.0	4	18	7820	79.75	109600	2.3
K157 / KF157 / KA157 / KAF157	15.0	6	11	13500	91.65	114100	1.35
KF157 / KA157 / KAF157	15.0	4	16	8990	91.65	112500	2.0
K157 / KF157 / KA157 / KAF157	15.0	6	9.7	14800	100.22	113700	1.20
KF157 / KA157 / KAF157	15.0	4	15	9830	100.22	114200	1.85
K157 / KF157 / KA157 / KAF157	15.0	6	7.9	18100	122.39	112200	1.00
KF157 / KA157 / KAF157	15.0	4	12	12000	122.39	114700	1.50
KF157 / KA157 / KAF157	15.0	4	9.7	14800	150.41	113700	1.20
K157 / KF157 / KA157 / KAF157	30	4	47	6100	31.30	82200	3.0
K157 / KF157 / KA157 / KAF157	30	4	39	7410	38.02	85100	2.4
K157 / KF157 / KA157 / KAF157	30	4	31	9120	46.79	87800	1.95
K157 / KF157 / KA157 / KAF157	30	4	27	10600	54.29	89500	1.70
K157 / KF157 / KA157 / KAF157	30	4	24	11900	61.02	90700	1.50
K157 / KF157 / KA157 / KAF157	30	4	21	13700	70.38	91800	1.30
K157 / KF157 / KA157 / KAF157	30	4	18	15500	79.75	92400	1.15
K157 / KF157 / KA157 / KAF157	30	4	16	17900	91.65	92800	1.00
K157 / KF157 / KA157 / KAF157	30	4	15	19500	100.22	92700	0.90
KF157 / KA157 / KAF157	37	4	18	19200	79.75	84500	0.95
KF157 / KA157 / KAF157	37	4	16	22000	91.65	83600	0.80
KF157 / KAF157	45	4	117	4510	12.65	62900	3.8
KF157 / KAF157	45	4	99	5310	14.92	64800	3.4
KA157	45	4	80	5370	18.37	69700	3.3
KA157	45	4	69	6230	21.31	71500	2.9
KA157	45	4	61	7000	23.95	72800	2.6
KA157	45	4	53	8080	27.62	74300	2.2
KA157	45	4	47	9150	31.30	75500	1.95
KA157	45	4	39	11100	38.02	76900	1.60
KA157	45	4	31	13700	46.79	77800	1.30
KA157	45	4	27	15900	54.29	77900	1.15
KA157	45	4	24	17800	61.02	77700	1.00
KF157 / KA157 / KAF157	45	4	21	20600	70.38	76800	0.85
K157 / KF157 / KA157 / KAF157	75	4	117	6120	12.65	59300	2.8
K157 / KF157 / KA157 / KAF157	75	4	99	7220	14.92	60500	2.5
K157 / KF157 / KA157 / KAF157	75	4	81	8890	18.37	61800	2.0
K157 / KF157 / KA157 / KAF157	75	4	69	10300	21.31	62400	1.75
K157 / KF157 / KA157 / KAF157	75	4	62	11600	23.95	62600	1.55
K157 / KF157 / KA157 / KAF157	75	4	54	13400	27.62	62600	1.35
K157 / KF157 / KA157 / KAF157	75	4	47	15100	31.30	62200	1.20
K157 / KF157 / KA157 / KAF157	75	4	39	18400	38.02	60800	1.00
K157 / KF157 / KA157 / KAF157	90	4	117	7350	12.65	56600	2.3
K157 / KF157 / KA157 / KAF157	90	4	99	8670	14.92	57400	2.1
K157 / KF157 / KA157 / KAF157	90	4	81	10700	18.37	57900	1.70
K157 / KF157 / KA157 / KAF157	90	4	69	12400	21.31	57900	1.45
K157 / KF157 / KA157 / KAF157	90	4	62	13900	23.95	57500	1.30
K157 / KF157 / KA157 / KAF157	90	4	54	16000	27.62	56700	1.10
K157 / KF157 / KA157 / KAF157	90	4	47	18200	31.30	55500	1.00
K157 / KF157 / KA157 / KAF157	90	4	39	22100	38.02	52700	0.80
KF157 / KA157 / KAF157	110	4	117	8950	12.65	53000	1.90
KF157 / KA157 / KAF157	110	4	100	10600	14.92	53100	1.70
KF157 / KA157 / KAF157	110	4	81	13000	18.37	52700	1.40
KF157 / KA157 / KAF157	110	4	70	15100	21.31	51900	1.20
KF157 / KA157 / KAF157	110	4	62	16900	23.95	50800	1.05
KF157 / KA157 / KAF157	132	4	117	10700	12.65	49100	1.60
KF157 / KA157 / KAF157	132	4	100	12700	14.92	48500	1.40
KF157 / KA157 / KAF157	132	4	81	15600	18.37	47000	1.15
KF157 / KA157 / KAF157	132	4	70	18100	21.31	45300	1.00
KF157 / KA157 / KAF157	132	4	62	20300	23.95	43400	0.90

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k167″ class=”frame-section”> <summary>Frame 167: torque 10100–37800 N·m; standard and combined selections</summary>

Frame 167 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KH
Output torque	10100–37800 N·m
Ratio envelope	24.52–164
Motor power	7.5–75.0 kW
Output speed	5.8–60.0 r/min
Weight	Weight not yet transcribed

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 134–139.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
KH167	7.5	6	7.1	10100	134.99	150000	3.2
KH167	7.5	6	5.8	12300	164.50	150000	2.6
K167 / KH167	15.0	6	8.8	16200	109.83	150000	1.95
K167 / KH167	15.0	6	7.2	19900	134.99	150000	1.60
K167 / KH167	30	4	24	11800	60.74	150000	2.7
K167 / KH167	30	4	22	13300	68.07	150000	2.4
K167 / KH167	30	4	19	15200	78.14	150000	2.1
K167 / KH167	30	4	17	17100	87.86	150000	1.85
K167 / KH167	30	4	13	21400	109.83	150000	1.50
K167 / KH167	45	4	34	12500	42.89	140600	2.5
K167 / KH167	45	4	28	15100	51.77	145600	2.1
K167 / KH167	45	4	24	17800	60.74	149000	1.80
K167 / KH167	45	4	22	19900	68.07	150000	1.60
K167 / KH167	45	4	19	22800	78.14	150000	1.40
K167 / KH167	45	4	17	25700	87.86	150000	1.25
K167 / KH167	45	4	13	32100	109.83	150000	1.00
KH167	75	4	60	11900	24.52	116300	2.7
KH167	75	4	51	13900	28.77	119300	2.3
KH167	75	4	46	15600	32.25	121300	2.0
KH167	75	4	40	17700	36.61	123200	1.80
KH167	75	4	35	20800	42.89	125200	1.55
KH167	75	4	29	25100	51.77	126800	1.30
KH167	75	4	24	29400	60.74	127300	1.10
KH167	75	4	22	32900	68.07	127100	0.95
KH167	75	4	19	37800	78.14	126100	0.85

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

<details id=”k187″ class=”frame-section”> <summary>Frame 187: torque 21600–62800 N·m; standard and combined selections</summary>

Frame 187 envelope

Confirmed catalogue envelope	Value
Variants observed	K, KH
Output torque	21600–62800 N·m
Ratio envelope	45.5–180
Motor power	15.0–75.0 kW
Output speed	5.4–33.0 r/min
Weight	Weight not yet transcribed

<p class=”catalogue-source”>Source: HaoRan RSKF catalogue 2024, p. 136–139.</p>

Standard units

These rows have a recorded ratio below 300 and describe the standard single-reducer selection group.

Variants	Motor power (kW)	Poles	Output speed (r/min)	Output torque (N·m)	Ratio	Overhung load (N)	Service factor
K187 / KH187	15.0	6	5.9	24400	165.21	190000	2.0
K187 / KH187	15.0	6	5.4	26600	179.86	190000	1.90
K187 / KH187	45	4	20	21600	73.96	187700	2.3
K187 / KH187	45	4	17	25700	88.00	190000	1.95
K187 / KH187	45	4	14	29900	102.16	190000	1.65
K187 / KH187	45	4	13	32900	112.60	190000	1.50
K187 / KH187	45	4	11	37900	129.69	190000	1.30
K187 / KH187	45	4	10	42300	144.59	190000	1.20
K187 / KH187	45	4	8.9	48300	165.21	190000	1.05
K187 / KH187	45	4	8.2	52600	179.86	185500	0.95
KH187	75	4	33	22000	45.50	156700	2.3
KH187	75	4	28	25800	53.36	160100	1.95
KH187	75	4	23	31000	64.04	163400	1.60
KH187	75	4	20	35800	73.96	165300	1.40
KH187	75	4	17	42600	88.00	166600	1.15
KH187	75	4	14	49400	102.16	166600	1.00
KH187	75	4	13	54500	112.60	166100	0.90
KH187	75	4	11	62800	129.69	164100	0.80

</div>

Combined units

These rows have a recorded ratio of 300 or higher. They are achieved by combining two gear reducers; they are shown separately so the high-ratio envelope is not represented as a single-unit claim.

<div data-ratio-group=”combined”> <p>No confirmed catalogue rows in this ratio group for this frame.</p> </div> </details>

How the data should be used

The values are catalogue envelopes and selection rows, not a promise that every configuration will fit every machine. The model designation, mounting form, output shaft, flange, service condition and installed dimensions must be reviewed together. Send the nameplate and installation photos of the existing unit with the driven-machine application before order confirmation.

Typical machine context

Typical inquiries include conveyors, bucket elevators, mixers, hoists and heavier process drives that require a right-angle arrangement. The machine-side load, starts and stops, operating environment and access for installation remain part of the selection discussion. If the application has a current reducer, a clear nameplate photo and overall mounting photo are the fastest way to establish the right review path.

Request a frame and mounting review

Send your nameplate and include the frame designation, driven equipment, operating condition and available mounting information. HaoRan Transmission will confirm the required mounting dimensions before you order.