Return to the main Zero Backlash Electric Jaw Holding Brakes (JEM) product page.
Zero Backlash Electric Jaw Holding Brakes (JEM) Specifications
Advantages
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Operation
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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 brake can deliver absolute zero backlash. Carlyle Johnson offers standard electrical brakes 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 Electric Jaw Holding Brakes (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.