PRODUCT · Couplings

Elastic Pin Couplings

Last updated 2026-10-26 Reviewed by Luo Genwen, Production Plant Manager

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Coupling Selector · Specifications

LT / LX Elastic Pin Couplings selector

Choose a series by its drawing, then view dimensions and performance separately. Search, use the declared filters, or sort by any column.

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LT Series dimensional drawing — LT Series · Engineering drawing · PDF page 1

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Data table

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Complete size table · 140 sizes (static version for printing and full-text search)

LT Series · LT principal dimensions
Model	Bore diameter group d1,d2,dz · mm	Y bore length L · mm	J/J1/Z bore length (L) L · mm	J/J1/Z bore length (L1) L1 · mm	D D · mm	A A · mm	S S · mm
LT1	9	20	14	—	71	18	3
LT1	10,11	25	17	—	71	18	3
LT1	12,14	32	20	—	71	18	3
LT2	12,14	32	20	—	80	18	3
LT2	16,18,19	42	30	42	80	18	3
LT3	16,18,19	42	30	42	95	35	4
LT3	20,22	52	38	52	95	35	4
LT4	20,22,24	52	38	52	106	35	4
LT4	25,28	62	44	62	106	35	4
LT5	25,28	62	44	62	130	45	5
LT5	30,32,35	82	60	82	130	45	5
LT6	32,35,38	82	60	82	160	45	5
LT6	40,42	112	84	112	160	45	5
LT7	40,42,45,48	112	84	112	190	45	5
LT8	45,48,50,55,56	112	84	112	224	65	6
LT8	60,63	142	107	142	224	65	6
LT9	50,55,56	112	84	112	250	65	6
LT9	60,63,65,70,71	142	107	142	250	65	6
LT10	63,65,70,71,75	142	107	142	315	80	8
LT10	80,85,90,95	172	132	172	315	80	8
LT11	80,85,90,95	172	132	172	400	100	10
LT11	100,110	212	167	212	400	100	10
LT12	100,110,120,125	212	167	212	475	130	12
LT12	130	252	202	252	475	130	12
LT13	120,125	212	167	212	600	180	14
LT13	130,140,150	252	202	252	600	180	14
LT13	160,170	302	242	302	600	180	14

LT Series · LT performance data
Model	Nominal torque N·m	Allowable speed rpm	Allowable radial compensation mm	Allowable angular compensation	Mass kg	Rotational inertia kg·cm²
LT1	6.3	8800	0.2	1°30′	0.82	0.0005
LT2	16	7600	0.2	1°30′	1.2	0.0008
LT3	31.5	6300	0.2	1°30′	2.2	0.0023
LT4	63	5700	0.2	1°30′	2.84	0.0037
LT5	125	4600	0.3	1°30′	6.05	0.012
LT6	250	3800	0.3	1°	9.57	0.028
LT7	500	3600	0.3	1°	14.01	0.055
LT8	710	3000	0.4	1°	23.12	0.134
LT9	1000	2850	0.4	1°	30.69	0.213
LT10	2000	2300	0.4	1°	61.4	0.66
LT11	4000	1800	0.5	0	120.7	2.122
LT12	8000	1450	0.5	0	210.34	5.39
LT13	16000	1150	0.6	0	419.36	11.58

LX Series · LX principal dimensions
Model	Bore diameter group d1,d2,dz · mm	Y bore length L · mm	J/J1/Z bore length (L) L · mm	J/J1/Z bore length (L1) L1 · mm	D D · mm	D1 D1 · mm	B B · mm	S S · mm
LX1	12,14	32	27	—	90	40	20	2.5
LX1	16,18,19	42	30	42	90	40	20	2.5
LX1	20,22,24	52	38	52	90	40	20	2.5
LX2	20,22,24	52	38	52	120	55	28	2.5
LX2	25,28	62	44	62	120	55	28	2.5
LX2	30,32,35	82	60	82	120	55	28	2.5
LX3	30,32,35,38	82	60	82	160	75	36	2.5
LX3	40,42,45,48	112	84	112	160	75	36	2.5
LX4	40,42,45,48,50,55,56	112	84	112	195	100	45	3
LX4	60,63	142	107	142	195	100	45	3
LX5	50,55,56	112	84	112	220	120	45	3
LX5	60,63,65,70,71,75	142	107	142	220	120	45	3
LX6	60,63,65,70,71,75	142	107	142	280	140	56	4
LX6	80,85	172	132	172	280	140	56	4
LX7	70,71,75	142	107	142	320	170	56	4
LX7	80,85,90,95	172	132	172	320	170	56	4
LX7	100,110	212	167	212	320	170	56	4
LX8	80,85,90,95	172	132	172	360	200	56	5
LX8	100,110,120,125	212	167	212	360	200	56	5
LX9	100,110,120,125	212	167	212	410	230	63	5
LX9	130,140	252	202	252	410	230	63	5
LX10	110,120,125	212	167	212	480	280	75	6
LX10	130,140,150	252	202	252	480	280	75	6
LX10	160,170,180	302	242	302	480	280	75	6
LX11	130,140,150	252	202	252	540	340	75	6
LX11	160,170,180	302	242	302	540	340	75	6
LX11	190,200,220	352	282	352	540	340	75	6
LX12	160,170,180	302	242	302	630	400	90	7
LX12	190,200,220	352	282	352	630	400	90	7
LX12	240,250,260	410	330	—	630	400	90	7
LX13	190,200,220	352	282	352	710	465	100	8
LX13	240,250,260	410	330	—	710	465	100	8
LX13	280,300	470	380	—	710	465	100	8
LX14	240,250,260	410	330	—	800	530	110	8
LX14	280,300,320	470	380	—	800	530	110	8
LX14	340	550	450	—	800	530	110	8

LX Series · LX performance data
Model	Nominal torque N·m	Allowable speed r/min	Rotational inertia kg·m²	Mass kg
LX1	250	8500	0.002	2
LX2	560	6300	0.009	5
LX3	1250	4700	0.026	8
LX4	2500	3870	0.109	22
LX5	3150	3450	0.191	30
LX6	6300	2720	0.543	53
LX7	11200	2360	1.314	98
LX8	16000	2120	2.023	119
LX9	22500	1850	4.386	197
LX10	35500	1600	9.76	322
LX11	50000	1400	20.05	520
LX12	80000	1220	37.71	714
LX13	125000	1080	71.37	1057
LX14	180000	950	170.6	1956

LXZ Series · LXZ principal dimensions
Model	Bore diameter group d1,d2,dz · mm	Y bore length L · mm	J/J1/Z bore length (L) L · mm	J/J1/Z bore length (L1) L1 · mm	Do Do · mm	D D · mm	B B · mm	B1 B1 · mm	S S · mm
LXZ1	20,22,24	52	38	52	200	120	85	42	2.5
LXZ1	25,28	62	44	62	200	120	85	42	2.5
LXZ1	30,32,35	82	60	82	200	120	85	42	2.5
LXZ2	30,32,35,38	82	60	82	200	160	85	40	2.5
LXZ2	40,42,45,48	112	84	112	200	160	85	40	2.5
LXZ3	30,32,35,38	82	60	82	315	160	132	66	2.5
LXZ3	40,42,45,48	112	84	112	315	160	132	66	2.5
LXZ4	40,42,45,48,50,55,56	112	84	112	315	195	132	66	3
LXZ4	60,63	142	107	142	315	195	132	66	3
LXZ5	40,42,45,48,50,55,56	112	84	112	400	195	168	84	3
LXZ5	60,63	142	107	142	400	195	168	84	3
LXZ6	50,55,56	112	84	112	400	220	168	84	3
LXZ6	60,63,65,70,71,75	142	107	142	400	220	168	84	3
LXZ7	50,55,56	112	84	112	500	220	210	105	3
LXZ7	60,63,65,70,71,75	142	107	142	500	220	210	105	3
LXZ8	60,63,65,70,71,75	142	107	142	400	280	168	84	4
LXZ8	80,85	172	132	172	400	280	168	84	4
LXZ9	60,63,65,70,71,75	142	107	142	500	280	210	105	4
LXZ9	80,85	172	132	172	500	280	210	105	4
LXZ10	70,71,75	142	107	142	500	320	210	105	4
LXZ10	80,85,90,95	172	132	172	500	320	210	105	4
LXZ10	100,110	212	167	212	500	320	210	105	4
LXZ11	70,71,75	142	107	142	630	320	265	132	4
LXZ11	80,85,90,95	172	132	172	630	320	265	132	4
LXZ11	100,110	212	167	212	630	320	265	132	4
LXZ12	80,85,90,95	172	132	172	630	360	265	132	5
LXZ12	100,110,120,125	212	167	212	630	360	265	132	5
LXZ13	100,110,120,125	212	167	212	710	410	298	149	5
LXZ13	130,140	252	202	252	710	410	298	149	5
LXZ14	110,120,125	212	167	212	710	480	298	149	6
LXZ14	130,140,150	252	202	252	710	480	298	149	6
LXZ14	160,170,180	302	242	302	710	480	298	149	6
LXZ15	110,120,125	212	167	212	800	480	335	168	6
LXZ15	130,140,150	252	202	252	800	480	335	168	6
LXZ15	160,170,180	302	242	302	800	480	335	168	6

LXZ Series · LXZ performance data
Model	Nominal torque N·m	Allowable speed rpm	Allowable axial compensation mm	Allowable radial compensation mm	Allowable angular compensation	Rotational inertia kg·m²	Mass kg
LXZ1	560	5600	±1.0	0.15	≤30′	2.18	11
LXZ2	1250	3750	±1.0	0.15	≤30′	2.45	14
LXZ3	1250	2430	±1.0	0.15	≤30′	13.08	25
LXZ4	2500	2430	±1.5	0.15	≤30′	16.6	40
LXZ5	2500	1900	±1.5	0.15	≤30′	49.2	59
LXZ6	3150	1900	±1.5	0.15	≤30′	57.6	69
LXZ7	3150	1900	±1.5	0.15	≤30′	127.4	91
LXZ8	6300	1900	±2.0	0.2	≤30′	161.7	88
LXZ9	6300	1500	±2.0	0.2	≤30′	129.2	113
LXZ10	11200	1500	±2.0	0.2	≤30′	156	156
LXZ11	11200	1220	±2.0	0.2	≤30′	314	187
LXZ12	1600	1080	±2.0	0.2	≤30′	328	326
LXZ13	22400	1080	±2.0	0.2	≤30′	713	337
LXZ14	25500	1080	±2.5	0.25	≤30′	849	458
LXZ15	35500	950	±2.5	0.25	≤30′	1231	504

Static copy of the selector data for reference and printing; use the interactive selector above to filter, sort and request a quote. All dimensions in mm; full range and tolerances per the PDF catalogue.

Dimensions and performance are shown separately. Sort by any column; consult the PDF catalogue for the full range, tolerances, and operating conditions. Download PDF catalogue ↗

FAQ

Common questions about this series

Elastic Pin Couplings: what size range does the table cover?

This page covers 3 series (LT, LX, LXZ) with 42 catalogue sizes: bores from Ø9 to Ø340 mm, rated torque 6.3–180 000 N·m. Finished bores, keyways and clamp variants are machined to your shaft; sizes outside the tables are made to drawing.

Elastic Pin Couplings: what is it and when should I use it?

Pin + elastomer sleeve (nylon) torque transfer: damps vibration, absorbs slight misalignment, easy sleeve replacement, low cost. LT type to GB/T 4323, LX type to GB/T 5014; LXZ brake-drum series in the table. Elastic pin couplings (LT to GB/T 4323, LX to GB/T 5014) are the economical general-purpose choice for medium and large motor drives: pins with nylon sleeves transmit torque, damp vibration and absorb slight misalignment, and the sleeves are cheap to replace. The LXZ version adds a brake drum.

Elastic Pin Couplings: can I order a size that is not in the table, or just one piece?

Yes. Everything on this page is made to drawing, and the table is only the standard-size subset of the catalogue. Minimum order quantity is one piece — we routinely make single replacement parts for OEMs whose original supplier has discontinued the item. Send a DWG, STEP or PDF drawing (or a sample part): you get a formal quotation within 24 hours after the information is complete, and the first article ships within 30 days of drawing approval, with inspection records.

Elastic Pin Couplings: what do I need to send to get a quote?

Send: shaft diameters and lengths on both sides (with keyways or clamp preference), rated and peak torque, speed, the misalignment you expect (angular, radial, axial), space available (outside diameter and overall length), operating temperature and whether the drive is servo/positioning or general. A drawing or STEP of the two shaft ends is ideal; a sketch with these values is enough for a first quote.

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