ER Series

Electrically Released Brakes – ER Series

Dynamic Engagement Brakes
ER brakes provide a permanent magnet engage/electrically released design. This brake must be engaged while the shaft is in motion. Shaft speed should be 100 RPM or greater when the brake is engaged. This style brake offers a bulkhead flange mounting system, the highest torque rating offered by Warner Electric in the power released series, high cycle rate capability, and excellent life.

FEATURES

• Designed for dynamic stopping operations
• High cycle rated capability
• Inside or Outside mount options for 475 or 650 sizes
• Normal or Heavy Duty options available in larger sizes

ER Series brakes are available in five sizes . Static torque ratings range from 10.5 lb.ft. to 400 lb.ft

Selection Procedure
Verify that the brake will be cycled frequently in normal operation. Determine the horsepower and speed at the brake location.

ER Series Electrically Released Brakes
Product Data – Reference (Pages A-8 to A-11) in catalog P-8590

Model	Voltage DC	Max. RPM	Bore Size
ER-375	90V	5000	.500″ & .625″
ER-475	90V	4500	.500″ to 1.000″
ER-650	90V	3600	.500″ to 1.375″
ER-825 ND	90V, 24V	3600	.500″ to 1.625″
ER-825 HD	90V, 24V	3600	.500″ to 1.500″
ER-1225 ND	35-75V	3000	.937″ to 3.00″
ER-1225 HD	35-75V	3000	.75″ to 2.687″

Component Parts

	ER-375	ER-475	ER-650
Description	Part No.	Part No.	Part No.
†Bushing		180-0410-0418	180-0421-0435
		(1/2″ to 1″ Bore)	(1/2″ to 1-3/8″ Bore)
Hub		540-0849	540-0848
1/2″ Bore	540-0846
5/8″ Bore	540-0847
Magnet And Armature (Inside Mounted, 90V)
Sold only in matched pairs*		5255-5	5256-6
Autogap Accessory		5391-101-003	5392-101-003
Terminal Accessory		5103-101-002	5103-101-002
Magnet And Armature (Outside Mounted, 90V)
Sold only in matched pairs*	5254-1	5255-6	5256-7
Autogap Accessory	5390-101-002	5391-101-003	5392-101-003
Terminal Accessory	5103-101-002	5103-101-002	5103-101-002
Mounting Accessory
Inside Mount		5255-101-001	5256-101-003
Outside Mount	5254-101-002	5255-101-002	5256-101-003
Conduit Box	5200-101-010	5200-101-010	5200-101-010

Component Parts

	ER-825 Normal Duty	ER-825 Heavy Duty	ER-1225 Normal Duty	ER-1225 Heavy Duty
Description	Part No.	Part No.	Part No.	Part No.
†Bushing	180-0137-180-0149	180-0008-180-0018	180-0262-180-0295	180-0026-180-0057
	7/8″ to 1-5/8″ Bore	7/8″ to 1-1/2″ Bore	15/16″ to 3″ Bore	3/4″ to 2-11/16″ Bore
Armature Hub	540-0394		540-0015
Splined Hub		540-0057		540-0064
Retainer Ring		748-0006		748-0005
Mounting Accessory, I.M.	5321-101-001	5321-101-001	5321-101-001	5321-101-001
Magnet (I.M.) and armature	24V 5250-31	5250-26
Sold only in matched pairs*	90V 5250-30	5250-25	5252-9	5252-4
Terminal Accessory	5311-101-001	5311-101-001	5311-101-001	5311-101-001
Autogap Accessory	5201-101-008		5201-101-008
Conduit Box	5200-101-010	5200-101-010	5200-101-010	5200-101-010

Manuals and Specifications


Catalog	Warner Electric ER Series Electrically Released Brakes Catalog
Service Parts Catalog	Warner Electric ER Series Electrically Released Brakes Service Parts Catalog