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Zero Backlash Electrical Clutches (JEM) Specifications

Advantages

Continuous rotor connection provides zero backlash*
Exclusive "Power Pack" control ensures quick-acting engagement and release
Highest torque in smallest space
Prolonged engagement / momentary disengagement
Hardened jaws have teeth of high-carbon alloy steel for positive tooth drive
Furnished completely assembled and ready to install on shaft

Operation

Torque Range 50 lb. ft. - 5,000 lb. ft.
Position accuracy .001° for loads up to 10% rated torque
Bi-directional operation
Drag-free neutral, no torque transmitted in the disengaged mode
Engaged fully by induced magnetic flux
Operates in wet or dry applications

Specifications / Dimensions

Model	Torque (lb-ft)	Engagement (Max RPM)	Running (Max RPM)	Number of Teeth	Std. Bore	Keyway	Voltage* DC ± 10%	Watts
JEM0375	50	100	5,000	360 or 560	3/4 or 7/8	3/16 x 3/32	24 or 100	40
JEM0425	100	100	5,000	360 or 560	1 or 1 1/8	3/16 x 3/32	24 or 100	40
JEM0475	200	100	5,000	360 or 560	1 1/4 or 1 3/8	1/4 x 1/8	24 or 100	50
JEM0625	400	100	4,200	360 or 560	1 3/4 or 1 7/8	3/8 x 3/16	24 or 100	60
JEM0800	800	100	3,600	360 or 560	2 or 2 1/4	7/16 x 7/32	24 or 100	80

*Other voltages are available. Carlyle Johnson stocks coils with voltages ranging from 12 to 240 volts DC.

Since there is some compliance in all mechanical systems, no clutch can deliver absolute zero backlash. Carlyle Johnson offers standard electrical clutches with backlash of less than .001° at 10% of rated torque.

Model	A	B	C	ID Pilot D	OD Pilot E	Bolt Circle F	Bolt Size(Qty 3)	G	H	I
JEM0375	4.046	1.350	1.827	1.031/1.032	2.061/2.062	1.547	#10	0.120	0.100	0.375
JEM0425	4.625	1.566	2.562	1.281/1.282	2.354/2.355	1.812	#10	0.160	0.140	0.425
JEM0475	5.187	1.822	2.812	1.531/1.532	2.650/2.651	2.092	1/4	0.200	0.180	0.500
JEM0625	6.750	2.082	3.375	2.031/2.032	3.436/2.437	2.625	1/4	0.250	0.220	0.690
JEM0800	8.500	2.411	3.750	2.401/2.402	4.325/4.326	3.625	3/8	0.250	0.250	0.750

In addition to our standard Zero Backlash Electrical Clutches (JEM), our engineering department can custom design and manufacture a new component to meet your specific requirements. If you have further questions or would like to discuss your specific needs, please contact us.