GCLD Gear Couplings

Coupling Selector · Specifications

GCLD / RGF Gear Couplings selector

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GCLD drum gear coupling dimensional drawing — GCLD drum gear coupling · Engineering drawing · PDF page 1

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Data table

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Complete size table · 117 sizes (static version for printing and full-text search)

GCLD drum gear coupling · GCLD principal dimensions
Model	Bore range d,d1,d2,dz · mm	Y bore length Y · mm	J1/Z1 bore length J1/Z1 · mm	D D · mm	D1 D1 · mm	D2 D2 · mm	C C · mm	C1 C1 · mm	H H · mm	A A · mm	A1 A1 · mm	B B · mm	B1 B1 · mm	B2 B2 · mm
GCLD1	22,24	52	38	127	95	75	27	6	2	43	22	66	45	42
GCLD1	25,28	62	44	127	95	75	27	6	2	43	22	66	45	42
GCLD1	30,32,35,38	82	60	127	95	75	27	6	2	43	22	66	45	42
GCLD1	40,42,45,48,50,55,56	112	84	127	95	75	27	6	2	43	22	66	45	42
GCLD2	38	82	60	149	116	90	26.5	6.5	2	44.5	24.5	70	49	42
GCLD2	40,42,45,48,50,55,56	112	84	149	116	90	26.5	6.5	2	44.5	24.5	70	49	42
GCLD2	60,63,65	142	107	149	116	90	33	6.5	2	44.5	24.5	70	49	42
GCLD3	40,42,45,48,50,55,56	112	84	167	134	105	33	7	2.5	53.5	27.5	80	54	42
GCLD3	60,63,65,70,71,75	142	107	167	134	105	33	7	2.5	53.5	27.5	80	54	42
GCLD4	45,48,50,55,56	112	84	187	153	125	33.5	7.5	2.5	54	28	81	55	42
GCLD4	60,63,65,70,71,75	142	107	187	153	125	33.5	7.5	2.5	54	28	81	55	42
GCLD4	80,85,90	172	132	187	153	125	38	7.5	2.5	54	28	81	55	42
GCLD5	50,55	112	84	204	170	140	37.5	7.5	2.5	60	30	89	59	42
GCLD5	60,63,65,70,71,75	142	107	204	170	140	37.5	7.5	2.5	60	30	89	59	42
GCLD5	80,85,90,95	172	132	204	170	140	37.5	7.5	2.5	60	30	89	59	42
GCLD5	100,(105)	212	167	204	170	140	43.5	7.5	2.5	60	30	89	59	42
GCLD6	55,56	112	84	230	186	155	43.5	8.5	3	68.5	33.5	106	71	47
GCLD6	60,63,65,70,71,75	142	107	230	186	155	43.5	8.5	3	68.5	33.5	106	71	47
GCLD6	80,85,90,95	172	132	230	186	155	43.5	8.5	3	68.5	33.5	106	71	47
GCLD6	100,110,(115)	212	167	230	186	155	43.5	8.5	3	68.5	33.5	106	71	47
GCLD7	60,63,65,70,71,75	142	107	256	212	180	48	6	3	73.5	34.5	112	73	47
GCLD7	80,85,90,95	172	132	256	212	180	48	6	3	73.5	34.5	112	73	47
GCLD7	100,110,120,125	212	167	256	212	180	48	6	3	73.5	34.5	112	73	47
GCLD7	130,(135)	252	202	256	212	180	48	6	3	73.5	34.5	112	73	47
GCLD8	65,70,71,75	142	107	287	239	200	40.5	8.5	3.5	69	39	112	82	47
GCLD8	80,85,90,95	172	132	287	239	200	40.5	8.5	3.5	69	39	112	82	47
GCLD8	100,110,120,125	212	167	287	239	200	40.5	8.5	3.5	69	39	112	82	47
GCLD8	130,140,150	252	202	287	239	200	48	8.5	3.5	69	39	112	82	47
GCLD9	70,71,75	142	107	325	276	235	49.5	9.5	3.5	80.5	40.5	125	85	47
GCLD9	80,85,90,95	172	132	325	276	235	49.5	9.5	3.5	80.5	40.5	125	85	47
GCLD9	100,110,120,125	212	167	325	276	235	49.5	9.5	3.5	80.5	40.5	125	85	47
GCLD9	130,140,150	252	202	325	276	235	49.5	9.5	3.5	80.5	40.5	125	85	47
GCLD9	160,170,(175)	302	242	325	276	235	58	9.5	3.5	80.5	40.5	125	85	47
GCLD10	75	142	107	362	313	270	65	11	4	98.5	44.5	149	95	49
GCLD10	80,85,90,95	172	132	362	313	270	65	11	4	98.5	44.5	149	95	49
GCLD10	100,110,120,125	212	167	362	313	270	65	11	4	98.5	44.5	149	95	49
GCLD10	130,140,150	252	202	362	313	270	65	11	4	98.5	44.5	149	95	49
GCLD10	160,170,180	302	242	362	313	270	65	11	4	98.5	44.5	149	95	49
GCLD10	190,200	352	282	362	313	270	68	11	4	98.5	44.5	149	95	49

GCLD drum gear coupling · GCLD performance data
Model	Bore range d · mm	Nominal torque Tn · kN·m	Allowable speed n · rpm	Mass kg	Rotational inertia kg·m²
GCLD1	22,24	1.12	4000	6.2	0.00875
GCLD1	25,28	1.12	4000	7.2	0.01025
GCLD1	30,32,35,38	1.12	4000	7.8	0.011
GCLD1	40,42,45,48,50,55,56	1.12	4000	9.6	0.01175
GCLD2	38	1.8	4000	11.2	0.02125
GCLD2	40,42,45,48,50,55,56	1.8	4000	14	0.02425
GCLD2	60,63,65	1.8	4000	16.4	0.0725
GCLD3	40,42,45,48,50,55,56	3.15	4000	17.2	0.04
GCLD3	60,63,65,70,71,75	3.15	4000	22.4	0.0475
GCLD4	45,48,50,55,56	5	4000	25.2	0.0725
GCLD4	60,63,65,70,71,75	5	4000	26.4	0.0825
GCLD4	80,85,90	5	4000	35.6	0.095
GCLD5	50,55	7.1	3750	31.6	0.1125
GCLD5	60,63,65,70,71,75	7.1	3750	38	0.1275
GCLD5	80,85,90,95	7.1	3750	44.6	0.145
GCLD5	100,(105)	7.1	3750	53.9	0.1875
GCLD6	55,56	10	3300	40.5	0.1875
GCLD6	60,63,65,70,71,75	10	3300	49.8	0.21
GCLD6	80,85,90,95	10	3300	56.3	0.235
GCLD6	100,110,(115)	10	3300	67.5	0.2675
GCLD7	60,63,65,70,71,75	16	3000	63.9	0.3575
GCLD7	80,85,90,95	16	3000	74.7	0.4
GCLD7	100,110,120,125	16	3000	88	0.4625
GCLD7	130,(135)	16	3000	106.7	0.5275
GCLD8	65,70,71,75	22.4	2650	81.7	0.56
GCLD8	80,85,90,95	22.4	2650	95.5	0.6275
GCLD8	100,110,120,125	22.4	2650	114	0.72
GCLD8	130,140,150	22.4	2650	123	0.8125
GCLD9	70,71,75	35.5	2350	112	1.0775
GCLD9	80,85,90,95	35.5	2350	130	1.2075
GCLD9	100,110,120,125	35.5	2350	156	1.3825
GCLD9	130,140,150	35.5	2350	181	1.56
GCLD9	160,170,(175)	35.5	2350	212	1.77
GCLD10	75	50	2100	161	1.97
GCLD10	80,85,90,95	50	2100	172	2.0725
GCLD10	100,110,120,125	50	2100	206	2.38
GCLD10	130,140,150	50	2100	239	2.5625
GCLD10	160,170,180	50	2100	280	3.055
GCLD10	190,200	50	2100	319	3.4225

RGF curved-tooth gear coupling · RGF principal dimensions
Model	Lengthened model	Pre-made bore mm	Maximum bore mm	l1_l2 l1_l2 · mm	LO LO · mm	L L · mm	M_N M_N · mm	E E · mm	max_lengthened_sleeve max_lengthened_sleeve · mm	D1 D1 · mm	D D · mm
RGF-14	RGF-14-L	8	14	23	50	37	6.5	4	40	40	24
RGF-19	RGF-19-L	10	19	25	54	37	8.5	4	40	48	30
RGF-24	RGF-24-L	12	24	26	56	41	7.5	4	50	52	36
RGF-28	RGF-28-L	15	28	40	84	46	19	4	55	66	44
RGF-32	RGF-32-L	15	32	40	84	48	18	4	55	76	50
RGF-38	RGF-38-L	15	38	40	84	48	18	4	60	83	58
RGF-42	RGF-42-L	25	42	42	88	50	19	4	60	92	65
RGF-48	RGF-48-L	25	48	50	104	50	27	4	60	95	67
RGF-55	RGF-55-L	25	55	52	108	58	25	4	65	114	82
RGF-65	RGF-65-L	35	65	55	114	68	23	4	70	132	95
RGF-80	—	25	80	90	186	93	46.5	6	—	175	124
RGF-100	—	35	110	110	228	102	63	8	—	210	152
RGF-125	—	45	125	140	290	134	78	10	—	270	192

RGF curved-tooth gear coupling · RGF performance data
Model	Nylon sleeve mass kg	Total mass kg	Rated torque N·m
RGF-14	0.02	0.14	10
RGF-19	0.03	0.21	16
RGF-24	0.04	0.25	20
RGF-28	0.07	0.62	45
RGF-32	0.09	0.83	60
RGF-38	0.11	1.04	80
RGF-42	0.14	1.41	100
RGF-48	0.16	1.43	140
RGF-55	0.26	2.5	240
RGF-65	0.39	3.58	380
RGF-80	0.91	10.93	700
RGF-100	1.36	19.47	1200
RGF-125	2.97	40.73	2500

RGF curved-tooth gear coupling · RGF optional bore diameters
Model	Pre-made center bore	Available finished bores dH7 · mm	Special keyway machining above 65 mm
RGF-14-1	B2.5/8	6,7,8,9,10,11,12,13,14	no
RGF-19-1	B2.5/8	8,9,10,11,12,13,14,15,16,17,18,19	no
RGF-24-1	B3.5/10	10,11,12,13,14,15,16,17,18,19,20,22,24	no
RGF-28-1	B3.5/10	10,11,12,13,14,15,16,17,18,19,20,22,24,25,28	no
RGF-32-1	B3.5/10	12,13,14,15,16,17,18,19,20,22,24,25,28,30,32	no
RGF-38-1	B3.5/10	14,15,16,17,18,19,20,22,24,25,28,30,32,35,38	no
RGF-42-1	B3.5/10	20,22,24,25,28,30,32,35,38,40,42	no
RGF-48-1	B3.5/10	20,22,24,25,28,30,32,35,38,40,42,45,48	no
RGF-55-1	B6.3/18	25,28,30,32,35,38,40,42,45,48,50,55	no
RGF-65-1	B6.3/18	25,28,30,32,35,38,40,42,45,48,50,55,60	yes
RGF-80-1	Pre-bore25	30,32,35,38,40,42,45,48,50,55,60	yes
RGF-100-1	Pre-bore35	40,42,45,48,50,55,60	yes
RGF-125-1	Pre-bore45	50,55,60	yes

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

Gear Couplings: what size range does the table cover?

This page covers 2 series (GCLD, RGF) with 23 catalogue sizes: bores from Ø6 to Ø200 mm, rated torque 10–50 000 N·m. Finished bores, keyways and clamp variants are machined to your shaft; sizes outside the tables are made to drawing.

Gear Couplings: what is it and when should I use it?

GCLD drum gear couplings (JB/T 8854.1): internal/external tooth meshing with crowned teeth — high capacity, high torque, compensates combined misalignment; requires lubrication. For heavy, high-torque, low-speed metallurgy, hoisting and heavy-industry drives. Curved-tooth series in the PDF. Gear couplings are for heavy, high-torque, low-speed drives — metallurgy, cranes and hoists, mills and mining — where crowned teeth carry very high loads in a compact size and tolerate combined misalignment. They need periodic lubrication, so they are not a fit for servo or maintenance-free applications.

Gear 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.

Gear 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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