A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear. It consists of a flexible joint fixed to each shaft. The two joints are connected by a third shaft, called the spindle.

Each joint consists of a 1:1 gear ratio internal/external gear pair. The tooth flanks and outer diameter of the external gear are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equivalent to rotating splines with modified profiles. They are called gears because of the relatively large size of the teeth.

Gear couplings and universal joints are used in similar applications. Gear couplings have higher torque densities than universal joints designed to fit a given space while universal joints induce lower vibrations. The limit on torque density in universal joints is due to the limited cross sections of the cross and yoke. The gear teeth in a gear coupling have high backlash to allow for angular misalignment. The excess backlash can contribute to vibration.

Gear couplings are generally limited to angular misalignments, i.e., the angle of the spindle relative to the axes of the connected shafts, of 4-5°. Universal joints are capable of higher misalignments.

Advantages of Tanso gear coupling

1. Lowest price based on large scale production.

2. High and stable quality level.

3. Widely used in various mechanical and hydraulic fields.

4. Compensation for axial, radial and angular misalignment.

5. Convenient axial pl ing assembly.

6. No brittlement at low temperature.

7. Good slippery and frictional properties.

8. Resistance to chemical corrosion.

 

9. Rich experience working with big companies in this field.

Design advantages

The Flexible Coupling method of connecting rotating shafts is a vital and necessary technique. Large massive shafting, loosely mounted in sleeve bearings and merely joined together by rigidly bolted flanges, cannot provide efficient mechanical power transmission. Especially today, as machine designers and builders demand higher speeds, higher torques, and higher misalignment capacities, the need for “flexibly connecting” this equipment becomes apparent.

A flexible coupling is necessary since it is practically impossible to achieve and maintain perfect alignment of coupled rotating shafts. During initial assembly and installation, precise alignment of the shaft axes is not only difficult to achieve but in many cases it is economically unfeasible. During operation, alignment is even more difficult to maintain. Shaft misalignment – caused by uneven bearing wear, flexure of structural members, settling of foundations, thermal expansion, shaft deflection and other factors – is an operating certainty. Because these factors are extremely difficult to control, a flexible coupling serves as an ideal answer to compensate or minimize the effects of unavoidable misalignment and end movement of coupled shafts.

 

A flexible coupling must provide three basic functions:

1. Physically couple together two rotating shafts for efficient transmission of mechanical power, transferring the torque of one shaft to the other, directly and with constant velocity.

2. Compensate for all types of misalignment between rotating, connected shafts without inducing abnormal stresses and loads on connected equipment, and without tangible loss of power.

 

3. Compensate for end or axial movement of the coupled shafts, preventing either shaft from exerting excessive thrust on the other and allowing each to rotate in its normal position.

   

Three types of misalignment must be effectively accommodated by a flexible coupling.

1. Parallel Offset – axes of connected shafts are parallel, but not in the same straight line.

2. Angular – axes of shafts intersect at center point of coupling, but not in the same straight line.

3. Combined Angular-Offset – axes of shafts do not intersect at point of coupling and are not parallel.

  

Product description

 

II type:the seal is the whole body, the tooth spacing is smaller, the relative axial displacement is smaller,the structure is compact, the moment of inertia is small, and can be connected with the Y and J1 axis.

Type	Nominal torque Tn /N·m	Max speed [n] /r·min-1	Bore diameter d1、d2	Bore length L		D	D1	D2	C	H	A	B	e	Mass m /kg	Moment of inertia I/kg·m2
				Y	J1
GⅡCL1	400	4000	16、18、19	42	-	103	71	50	8	2	36	76	38	5.1	0.014
			20、22、24	52	38									3	0.014
			25、28	62	44									3.1	0.014
			30、32、35	82	60									3.6	0.015
GⅡCL2	710	4000	20、22、24	52	38	115	83	60	8	2	42	88	42	4.9	0.023
			25、28	62	44									4.5	0.022
			30、32、35、38	82	60									5.1	0.024
			40、42、45	112	84									6.2	0.027
GⅡCL3	1120	4000	22、24	52	38	127	95	75	8	2	44	90	42	7.5	0.042
			25、28	62	44									7	0.040
			30、32、35、38	82	60									6.9	0.040
			40、42、45、48、50、55	112	84									8.6	0.045
GⅡCL4	1800	4000	38	82	60	149	116	90	8	2	49	98	42	10.1	0.08
			40、42、45、48、50、55、56	112	84									12.2	0.089
			60、63、65	142	107									14.5	0.098
GⅡCL5	3150	4000	40、42、45、48、50、55、56	112	84	167	134	105	10	25	55	108	42	16.4	0.151
			60、63、65、70、71、75	142	107									19.6	0.173
GⅡCL6	5000	4000	45、48、50、55、56	112	84	187	153	125	10	2.5	56	110	42	22.1	0.265
			60、63、65、70、71、75	142	107									26.5	0.30
			80、85、90	172	132									31.2	0.337
GⅡCL7	7100	3750	50、55、56	112	84	204	170	140	10	3.5	60	118	42	27.6	0.405
			60、63、65、70、71、75	142	107									33.1	0.46
			80、85、90、95	172	132									39.2	0.52
			100、(105)	212	167									47.5	0.602
GⅡCL8	10000	3300	55、56	112	84	230	186	155	12	3	67	142	47	35.5	0.668
			60、63、65、70、71、75	142	107									42.3	0.75
			80、85、90、95	172	132									49.7	0.839
			100、110、(115)	212	167									60.2	0.964
GⅡCL9	16000	3000	60、63、65、70、71、75	142	107	256	212	180	12	3	69	146	47	55.6	1.264
			80、85、90、95	172	132									65.6	1.425
			100、110、120、125	212	167									79.6	1.652
			130、(135)	252	202									95.8	1.878
GⅡCL10	22400	2650	65、70、71、75	142	107	287	239	200	14	3.5	78	164	47	72	2.05
			80、85、90、95	172	132									84.4	2.3
			100、110、120、125	212	167									101	2.64
			130、140、150	252	202									119	2.98
GⅡCL11	35500	2350	70、71、75	142	107	325	276	235	14	3.5	81	170	47	97	5.81
			80、85、90、95	172	132									114	4.94
			100、110、120、125	212	167									138	4.94
			130、140、150	252	202									161	5.6
			160、170(175)	302	242									189	6.35
GⅡCL12	50000	2100	75	142	107	362	313