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Gear couplings are important connecting components in mechanical transmission systems. They transmit torque between two shafts through gear meshing and compensate for axial, radial, and angular displacements caused by installation errors or operational deformation. Among them, the barrel-shaped gear coupling (such as the GIICL type) features an internal and external gear design with a barrel shape. Compared to traditional straight-tooth couplings, it offers better angular displacement compensation, effectively reduces edge stress on gear surfaces, improves transmission smoothness and service life, and is widely used in heavy-duty, frequent start-up, and complex working condition machinery.

Classification

1. By gear tooth structure:

- Barrel-shaped gear coupling (such as GIICL type, GIICL series): focuses on angular displacement compensation, suitable for complex working conditions.

- Straight-tooth coupling (such as CLZ type): simple structure, lower cost, suitable for medium and small power transmission.

2. By material:

- Cast steel coupling: high strength, suitable for heavy-duty applications (such as mining, metallurgy).

- Stainless steel coupling: corrosion resistant, suitable for chemical and marine environments.

3. By structure:

- Single-section coupling: used for short-distance connection between two shafts.

- Double-section (with intermediate shaft) coupling: connects two coupling sections via an intermediate shaft, enabling flexible connection of long-span shafts with stronger compensation capability.

Product Introduction

The barrel-shaped gear coupling (taking G II CL type as an example) mainly consists of internal and external gear rings, barrel-shaped gears, connecting flanges, sealing elements, and lubrication devices:

- Barrel-shaped gear design: the tooth crown of the external gear sleeve is barrel-shaped, and the tooth grooves of the internal gear ring correspond to a matching curved surface, allowing larger angular displacement (usually ±1.5°~3°) and reducing gear surface wear.

- High-strength structure: gear rings are usually forged from high-quality alloy steel (such as 42CrMo, 34CrNiMo6) and undergo quenching and tempering treatment to ensure high load capacity and impact toughness.

- Reliable connection: the half couplings connect to the shaft via keys or shrink-fit sleeves, and the flange plates are fixed with high-strength bolts to ensure transmission rigidity.

- Long-lasting lubrication: uses labyrinth seals or oil seals, internally filled with lithium-based grease or gear oil to ensure the gear pair operates under oil film lubrication, extending service life.

- Modular design: couplings can be customized with different sizes, tooth counts, and connection bore diameters according to user requirements to adapt to diverse working conditions.

Scope of Application

1. Heavy industry equipment: mining machinery (crushers, ball mills), metallurgical equipment (rolling mills, continuous casting machines), building materials machinery (cement mills, rotary kilns).

2. Energy industry: wind turbine gearboxes, auxiliary equipment in thermal power plants, nuclear power plant equipment.

3. Construction machinery: crane slewing mechanisms, excavator transmission systems, port machinery.

4. Other fields: large compressors, pumps, conveyor equipment, and other mechanical transmission systems requiring continuous operation and high reliability.

Working Principle

1. Torque transmission: the rotation of the driving shaft is transmitted through the external gear sleeve to the internal gear ring, which then drives the driven shaft, achieving motion and power transmission.

2. Displacement compensation:

- Angular displacement: the barrel-shaped gear surfaces allow relative deflection between internal and external gears during meshing, absorbing angular deviations through relative sliding of gear surfaces.

- Axial displacement: there is appropriate clearance along the axial direction between internal and external gears to accommodate axial expansion and contraction.

- Radial displacement: radial deviations are compensated by the staggered tooth movement in the tooth width direction.

3. Lubrication and balancing: internal lubricants form an oil film to reduce gear surface friction; high-speed couplings require dynamic balancing to reduce vibration.

GⅡCL Type Gear Coupling - Barrel Type Model Parameter Table

Model	Nominal Torque Tn (N·m)	Permissible Speed [n] r/min	Shaft Bore Diameter d₁, d₂	Shaft Bore Length Y, J1	D	D₁	D2	H	A	B	c	e	Rotational Inertia (Kg·m²)	Lubricant Amount (ML)	Mass (Kg)
GIICL1	355	4000	14-35	38-82	103	71	50	2	36	76	8	38	0.0035-0.00375	51	3.1
GIICL2	630	4000	16-45	38-112	115	83	60	2	42	88	8	42	0.00550-0.00675	70	3.5
GIICL3	1000	4000	22-56	38-112	127	95	75	2	44	90	8	42	0.010-0.0113	68	7
GIICL4	1600	4000	38-65	60-142	149	116	90	2	49	98	8	42	0.02-0.0245	87	12.2
GIICL5	2800	4000	40-75	84-142	167	134	105	2.5	55	108	10	42	0.0378-0.0433	125	18
GIICL6	4500	4000	45-90	84-172	187	153	125	2.5	56	110	10	42	0.0663-0.0843	148	26.5
GIICL7	6300	3750	50-105	84-212	204	170	140	3.5	60	118	10	42	0.103-0.151	175	39.2
GIICL8	9000	3300	55-115	84-212	230	186	155	3	67	142	12	47	0.167-0.241	268	49.7
GIICL9	14000	3000	60-135	107-252	256	212	180	3	69	146	12	47	0.316-0.470	310	79.6
GIICL10	20000	2650	65-150	107-252	287	239	200	3.5	78	164	14	47	0.511-0.745	472	101
GIICL11	31500	2350	70-175	107-302	325	276	235	3.5	81	170	14	47	1.096-1.588	550	161
GIICL12	45000	2100	75-200	107-352	362	313	270	4	89	190	16	49	1.623-3.055	695	213
GIICL13	63000	1850	150-225	202-352	412	350	300	4.5	98	208	18	49	3.925-4.918	1019	315
GIICL14	100000	1650	170-250	242-410	462	420	335	5.5	172	296	22	63	8.025-9.725	3900	476
GIICL15	160000	1500	190-285	282-470	512	470	380	5.5	182	316	22	63	14.300-17.45	3700	696
GIICL16	224000	1300	220-320	282-470	580	522	430	7	209	354	28	67	23.925-29.1	4500	913
GIICL17	315000	1200	250-365	330-550	644	582	490	7	198	364	28	67	43.095-53.725	4900	1322
GIICL18	450000	1050	280-400	380-650	726	658	540	8	222	430	28	75	78.525-99.500	7000	1948
GIICL19	630000	950	300-470	380-650	818	748	630	8	232	440	32	75	136.750-175.5	8900	3026
GIICL20	900000	800	360-540	450-800	928	838	720	10.5	247	470	32	75	261.75-360.75	11000	3984
GIICL21	1250000	750	400-600	540-800	1022	928	810	11.5	255	490	40	75	468.75-561.50	13000	4977
GIICL22	1600000	650	450-680	540-800	1134	1036	915	13	262	510	40	75	753.750-904.750	16000	7738
GIICL23	2240000	600	500-770	680-800	1282	1178	1035	14.5	299	580	50	80	1517-1725	28000	10783
GIICL24	3150000	550	560-880	680-900	1428	1322	1175	16.5	317	610	50	80	2486-3131.75	33000	15015
GIICL25	4000000	460	670-1040	900-1000	1644	1538	1390	19	325	620	50	80	5174.25-7198.25	43000	24080

Keywords

Next： WGT Type Intermediate Sleeve

GⅡCL Type Gear Coupling - Drum Type

Gear couplings are important connecting components in mechanical transmission systems. They transmit torque between two shafts through gear meshing and compensate for axial, radial, and angular displacements caused by installation errors or operational deformation. Among them, the barrel-shaped gear coupling (such as the GIICL type) features an internal and external gear design in a barrel shape. Compared to traditional straight-tooth couplings, it offers better angular displacement compensation, effectively reduces edge stress on the gear teeth, improves transmission smoothness and service life, and is widely used in heavy-duty, frequent start-up, and complex working condition machinery.

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E-mail：sales@zszxjx.com

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Classification

Product Introduction

Scope of Application

Working Principle

GⅡCL Type Gear Coupling - Barrel Type Model Parameter Table

GⅡCL Type Gear Coupling - Drum Type

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