FEA Electromagnetic Clutches Manufacturer

Fail-Safe clutches offer a reliable, spring applied, positive acting clutch that quickly starts a wide range of equipment.

Designed and manufactured with extreme precision, electric / electromagnetic clutch units have been thoroughly tested to deliver proven, dependable performance in many diverse applications - from heavy-duty machine tools to fragile assembly and packaging equipment.

Electrically operated, the clutch's coil is sealed within a stationary housing which is supported on ball bearings. A powerful electromagnetic force disengages the disc pack unit to provide a low-drag neutral.

Internal compressive forces are contained within the clutch and are not transmitted through the bearings. The radial magnetic flux path provides maximum torque throughout the life
of the unit.

A significant portion of Carlyle Johnson Machine Co's production is devoted to the design and manufacture of special clutches, brakes and integrated systems designed to specific user requirements. If you need a custom electromagnetic clutch solution we have the experience and skills to meet your transmission problem challenge.

Specifications / Dimensions

*All models offer 100 or 24 D.C. volts. All Fail-Safe Coils will operate at rated voltage ± 10%.
Old part designation was FEMA. Dyn = Dynamic. St = Static.
Model	Dyn. Torque (lb. ft.)	St. Torque (lb. ft.)	A	B	C	Min. Axial Position D	Bores	Keyway	Watts
FEA-0375	6	12	3.797	2.563	4.063	.375	3/4 or 7/8	3/16 x 3/32	40
FEA-0425	12	25	4.359	2.750	4.625	.313	1 or 1 1/8	3/16 or 3/32	40
FEA-0475	25	50	4.282	3.063	5.188	.438	1 1/4 or 1 3/8	1/4 or 1/8	50
FEA-0625	50	100	6.359	3.625	6.750	.500	1 3/4 or 1 7/8	3/8 or 3/16	50
FEA-0800	120	240	8.094	4.063	8.500	.500	2 or 2 1/4	7/16 x 7/32	80

Standard hardened Electric Clutch Cups are designed especially for use with Electric / electromagnetic clutch and brake units. Available with internal or external flanges and provided with mounting bolt holes, these cups can be quickly adapted to various types of driven or driving members. We offer these cups as an economical and simple way of adapting our clutches and brakes to your conditions.
Internal Flange
Drive Cup #	A	B (b.c.)	Screw Size	Holes	C	D	E	F	Slots
EMA-0375-106-30	4.250 - 4.248	3.067 - 3.057	1/4	3	2.017 - 2.015	4.188	1.188	.188	8
EMA-0425-106-30	4.750 - 4.748	3.630 - 3.620	1/4	3	2.517 - 2.515	4.688	1.250	.188	8
EMA-0475-106-30	5.250 - 5.248	3.942 - 3.932	5/16	3	2.517 - 2.515	5.188	1.375	.250	8
EMA-0625-106-30	6.812 - 6.810	5.317 - 5.307	3/8	4	3.767 - 3.765	6.750	1.656	.313	8
EMA-0800-106-30	8.562 - 8.560	6.255 - 6.245	1/2	4	4.517 - 4.515	8.500	1.703	.313	12
EMA-0950-106-30	10.062 - 10.060	8.067 - 8.057	1/2	4	5.517 - 5.515	10.00	1.781	.313	12
EMA-1150-106-30	11.812 - 11.809	9.817 - 9.807	1/2	6	8.017 - 8.015	11.75	2	.313	12

*External Flange Cup for Model FEA 0265 available upon request.*
External Flange
Drive Cup #	A	B (b.c.)	Screw Size	Holes	C	D	E	F	Slots
EMA-0375-106-20	5.625 - 5.623	4.880 - 4.870	1/4	3	3.814 - 3.812	4.188	1.188	.250	8
EMA-0425-106-20	6.125 - 6.123	5.380 - 5.370	1/4	4	4.314 - 4.312	4.688	1.250	.250	8
EMA-0475-106-20	6.875 - 6.873	6.005 - 5.995	5/16	4	4.814 - 4.812	5.188	1.375	.250	8
EMA-0625-106-20	8.500 - 8.498	7.692 - 7.982	3/8	4	6.377 - 6.375	6.750	1.656	.313	8
EMA-0800-106-20	10.625 - 10.623	9.630 - 9.620	1/2	4	8.095 - 8.093	8.500	1.781	.313	12
EMA-0950-106-20	12.250 - 12.248	11.130 - 11.120	1/2	4	9.533 - 9.531	10.00	1.781	.313	12
EMA-1150-106-20	14.248 - 14.247	13.005 - 12.995	1/2	6	11.253 - 11.250	11.75	2	.375	12