Warner Electric SF-1225 Flange Mounted

  • SF Series
  • Model Size: sf-1225
  • Voltage: 6/24/90 VDC
  • Static Torque: 465lb.ft.
  • Max RPM: 3,000 rpm
  • Shaft Size: .500 – 2.500

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-1225 Flange Mounted
FunctionStationary Field Clutch
Shaft Size.500 – 2.000
Static Torque465 lb. ft.
Max. RPM3,000 rpm
Standard VoltageDC 6, 24, 90
Outside Diameter12.75 Inches
Overall Length3.50 Inches
Manufacturer DrawingI-25600


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-1225 FM Users Manual / Installation Instructions
Quick InformationWarner Electric SF-1225 FM – Duty Quick Info


(Please provide the following with your quote request)

1. Specify Bore Size for Item 5.
2. Specify Voltage for Item 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-1225 Clutch per I-25600 – 90 Volt, 1-1/2” Bore, Inside Mounted.

Warner Electric SF Series 1225

Warner MB Series Controls


SF-1225 Flange Mounted Parts List
ItemDescriptionPart NumberQty.
2Autgap Accessory5201-101-0084
3Mounting Accessory5321-101-0022
Standard Friction Material5203-751-001
Optional LK Facing5203-751-004
1/2″ to 2-1/2″ Bore180-0185 to 180-0217
6Rotor Hub540-03181
7AField – Inside Mounted1
6 Volt5203-451-002
24 Volt5203-451-006
90 Volt5203-451-005
7BField – Outside Mounted1
6 Volt5203-451-010
24 Volt5203-451-013
90 Volt5203-451-011
8AMounting Accessory – I.M.5321-101-0011
8BMounting Accessory – O.M.5321-101-0022
9Conduit Box5200-101-0121