Warner Electric MB-825 Flange Mounted Normal Duty

  • MB Series
  • Voltage: 90 VDC
  • Static Torque: 80 lb. ft.
  • Max RPM: 4000
  • NEMA C Face 213C, 215C, 254UC, 256 UC.

MB motor brakes are composed of a PB Series brake mounted on a NEMA C-face adapter and cover assembly.


Model NameMB-825 Flange Mounted Normal Duty
FunctionBrake – Primary
Compatible Frame SizesNEMA C Face 213C, 215C, 254UC, 256 UC.
Shaft Size.500 – 1.625
Max. Rated Torque80 lb. ft.
Max. RPM4,000 rpm
Standard VoltageDC 90
Outside Diameter11.5 Inches
Overall Length4.25 Inches
Manufacturer DrawingI-25572


Custom design brakes and clutches are user-assembled from standard components for optimum performance in the smallest possible package size.

  • Easily adaptable to any mounting requirement
  • Low initial cost
  • Wide range of models and options


pdf icon 1
CatalogWarner Electric Basic Design Clutches Brakes Catalog
Users Manual / Installation InstructionsWarner Electric MB-825 Users Manual / Installation Instructions
Quick InformationWarner Electric MB-825 Normal Duty Quick Info


1. Confirm Product Compatability
(MB-825 Adapts to NEMA C Face, Double Shaft Motors, Frame Sizes 213 C, 215 C, 254 UC and 256 UC.)

2. Specify Bore Size for Item 2 (Frame size determines bore).MB

Warner MB Series 825 Controls

3. See Controls Section
Warner MB Series Controls

Please provide Bore Size (Bushing Part Number) & Control Option Model Number along with your quote request.

Parts List – MB-825 Flange Mounted Normal Duty
ItemDescriptionPart NumberQty.
1/2″ to 1-5/8″ Bore180-0131 to 180-0149
3Armature Hub540-03941
5Magnet – 90 Volt5351-631-0011
5-1Terminal Accessory5311-101-0011
7Mounting Accessory5351-101-0031
8Drive Pin and Retainer5301-101-0013
9Mounting Accessory5321-101-0021
10Spring Accessory5301-101-0143