20B-1 hardened hub sprockets

20B-1 hardened hub sprockets are simplex sprockets for 20B-1 chain of 1 1/4" (31.75 mm) pitch to DIN 8187 / ISO 606, with induction-hardened teeth. They are compact driving sprockets for heavy, low-speed drives.

Hardened 20B-1 sprocket for work in tough conditions

A driving sprocket with a small number of teeth works under the toughest conditions - hardened teeth significantly extend its service life. The C45 steel hub is not hardened, so you can bore the hole to the shaft size.

20B-1 hardened simplex driving sprockets in C45 steel

20B-1 simplex sprockets in C45 steel with teeth hardened to 45-55 HRC, in a choice of tooth counts typical of driving sprockets. Dimensions are given on the product page.

Frequently asked questions about 20B-1 hardened simplex sprockets

Is a hardened sprocket corrosion-resistant?

No. Hardening increases tooth hardness but does not protect against rust. For work in damp conditions, choose a stainless steel sprocket from the Stainless steel sprockets group or protect the sprocket with grease.