Warner Electric SF-825 Flange Heavy Duty Mounted

  • SF Series
  • Voltage: 6/24/90 VDC
  • Static Torque: 125 lb.ft.
  • Max RPM: 4,000 rpm
  • Shaft Size: .500 – 1.250

The SF design eliminates collector rings and brush-holder. Ideal for adverse environmental conditions. Mounting tolerances are generally more critical than the PC design.


Model NameSF-825 Flange Heavy Duty
FunctionStationary Field Clutch
Shaft Size.500 – 1.250
Static Torque125 lb. ft.
Max. RPM4,000 rpm
Standard VoltageDC 6, 24, 90
Outside Diameter8.50 Inches
Overall Length3 Inches
Manufacturer DrawingI-25561


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 SF-825 FM-HD Users Manual / Installation Instructions
Quick InformationWarner Electric SF-825 FM – HD Duty Quick Info


(Please provide the following with your quote request)

1. Specify Bore Size for Item 3.
2. Specify Voltage for Items 7A or 7B.
3. Specify Inside Mounted for Items 7A and 8A or Outside Mounted for Items 7B and 8B.
4. See Controls Section.

SF-825 Clutch per I-25560 -90 Volt, 1” Bore, Inside Mounted

Warner Electric SF Series 825 FM HD



Warner MB Series Controls


SF-825 Flange Mounted Parts List
Normal DutyDescriptionPart NumberQty.
2Autogap Accessory5201-101-0083
1/2″ to 1-1/4″ Bore180-0101 to 180-0113
4Mounting Accessory5201-101-0071
Standard Friction Material5201-751-003
Optional LK Facing5201-751-007
6Rotor Hub540-00131
7AField – Inside Mounted1
6 Volt5201-451-006
24 Volt5201-451-008
90 Volt5201-451-010
7BField – Outside Mounted1
6 Volt5201-451-014
24 Volt5201-451-016
90 Volt5201-451-018
8AMounting Accessory – I.M.5321-101-0011
8BMounting Accessory – O.M.5321-101-0021
9Conduit Box5200-101-0121