CALL 800-985-6929
Speak to an Expert Mon-Fri 7AM - 7PM CST
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 |
- Model Number: ER-1225 Heavy Duty
- Series: ER
- Bore Size: .75" to 2.687"
- Voltage: 90 VDC
- Static Torque: 400 lb. ft.
- Max RPM: 3000
- Model Number: ER-1225 Normal Duty
- Series: ER
- Bore Size:.937" to 3.00"
- Voltage: 90 VDC
- Static Torque: 400 lb. ft.
- Max RPM: 3000
- Model Number: ER-375
- Series: ER
- Bore Size: .500" &.625"
- Voltage: 90 VDC
- Static Torque: 10.5 lb. ft.
- Max RPM: 5000
- Model Number: ER-475
- Series: ER
- Bore Size – .500″ to 1.00″
- Voltage: 90 VDC
- Static Torque: 21 lb. ft.
- Max RPM: 4500
- Model Number: ER-650
- Series: ER
- Bore Size – .500" to 1.375"
- Voltage: 90 VDC
- Static Torque: 56 lb. ft.
- Max RPM: 3600
- Model Number: ER-825 Heavy Duty
- Series: ER
- Bore Size: .500″ to 1.500″
- Voltage: 24VDC or 90VDC
- Static Torque: 125 lb. ft.
- Max RPM: 3600
- Model Number: ER-825 Normal Duty
- Series: ER
- Bore Size – .500" to 1.625"
- Voltage: 24VDC or 90VDC
- Static Torque: 125 lb. ft.
- Max RPM: 3600