Warner Electric SF-120 Bearing Mounted

  • SF Series
  • Voltage: 6/24/90 VDC
  • Static Torque: 5 lb.in
  • Max RPM: 3,600 rpm
  • Shaft Size: .188/.187- .313/.312
  • Armature Bore: .195/.190- .257/.252

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-120 Bearing Mounted
FunctionStationary Field Clutch
Static Torque5 lb.in.
Max. RPM3,600 rpm
Standard VoltageDC 6, 24, 90
Outside Diameter1.25 Inches
Overall Length1.5 Inches
Manufacturer DrawingI-25509


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-120 Users Manual / Installation Instructions
Quick InformationWarner Electric SF-120 Normal Duty Quick Info


(Please provide the following with your quote request)

1. Specify Type of Armature Desired.
2. Specify Bore Size for Item 1A-1 or 1B and Item 2.
3. Specify Voltage for Item 3.
4. See Controls Section.

SF-120 Clutch per I-25509 – 90 Volt Standard Armature 1/4” Armature Hub Bore

Warner Electric SF Series 120 BM

Warner MB Series Controls


SF-120 Bearing Mounted Parts List
ItemDescriptionPart NumberQty.
1AArmature and Hub
1A-1Armature Hub1
3/16″ Bore5602-541-009
1/4″ Bore5602-541-008
1BAntibacklash Armature1
3/16″ Bore5602-111-002
1/4″ Bore5602-111-003
5/16″ Bore5602-111-007
3/16″ Bore5602-751-008
1/4″ Bore5602-751-006
5/16″ Bore5602-751-007
6 Volt5602-451-021
24 Volt5602-451-023
90 Volt5602-451-025
4Set Collar5602-266-0011