Stieber Freewheels and Backstops in Qatar

Overview

Stieber has been making freewheels at Heidelberg since 1937 and is part of Regal Rexnord today. A freewheel looks like a bearing and is ordered like a bearing, but it does something a bearing does not: it turns freely one way and locks solid the other.

The common use is a backstop. On an inclined conveyor or a bucket elevator, a backstop is what stops a loaded belt running backwards when the drive stops, which is a safety matter rather than a performance one. Petrofab quotes Stieber through its supplier base.

What we supply

Sprag freewheels, backstops, overrunning clutches, indexing freewheels, in built in, self contained and combined bearing forms, in metric and imperial sizes.

The Stieber families

Stieber divides the range by how the freewheel is mounted, which is the first thing to settle when ordering one.

Code	What it means
Built in freewheels	The sprag assembly alone, fitted into a housing the machine already has
Self contained freewheels	A complete unit with its own bearings and seals, ready to mount
Combined bearing freewheels	A freewheel that also carries the radial load, so it replaces a bearing as well
Centrifugally lift off sprags	For high speed overrunning, where the sprags lift clear so there is no wear while the shaft is freewheeling

A bearing usually has an equivalent under another brand, and the letters are where the two differ. Send whichever number is in front of you and we will identify what fits.

Ordering

Send us the Stieber number with the quantity. If the marking has worn off, send the bore, the outside diameter and the width, and tell us what it runs in and how hard it works. We will identify the equivalent and quote it. Quantities and delivery are confirmed on the quotation.

The full bearing range, and every brand we carry, is on our bearings page.