Overrunning Clutches & Backstops

FSO 300-700, FSO-GR 300-700, HPI 300-700

Stieber Clutch FSO Backstop

Types FSO, FSO-GR, and HPI 300 to 700 are sprag type freewheels self-contained, sealed and bearing supported, using two ball bearings.

Units are delivered oil or grease lubricated according to the type. It is a Formsprag USA design with a »full sprag complement« that gives a very high torque for a given diameter. Any overload is resisted by a sprag to sprag abutment, avoiding a sprag tilt over. Types FSO and HPI are oil lubricated and use standard shaft lip seals. Type FSO-GR is grease lubricated and can be equipped with contact free labyrinth seals. Type HPI is specially designed for high speed indexing applications.

  • Altra Industrial Motion - Australia (Sydney)
  • Sydney New South Wales
  • Unit 1, 11 Penny Place
  • Arndell Park, NSW. 2148
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Melbourne)
  • Melbourne Victoria
  • Suite 36, Level 2/222 Lonsdale Street
  • Melbourne, VIC 3000
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Mackay Queensland)
  • Mackay Queensland
  • 14/20-34 Caterpillar Drive
  • Paget, QLD 4740
  • Phone: 1300 ALTRAMOTION
  • Altra Industrial Motion - Australia (Perth)
  • Perth Western Australia
  • 271 Great Eastern Highway
  • Belmont, WA 6104
  • Phone: 1300 ALTRAMOTION