TB Wood’s Sure Grip© Narrow (Ultra-V) Sheaves

Wood’s Ultra-V sheaves are constructed of fine grain, high tensile cast iron, and have been carefully engineered to assure maximum performance over a long life span. Behind each sheave is one of the most extensive engineering design and testing  programs in the industry.

With the advent of higher V-belt ratings, Wood’s engineers instituted additional careful test programs to ensure that each Wood’s sheave would be capable of safely and dependably delivering the increased performance which was required by the new ratings. Wood’s engineers, using a special strain gage test stand, subject sheaves to tension and compression stresses far in excess of those encountered in actual operation.

In another standard test procedure, Wood’s sheaves are  operated at extremely high speeds. Sheaves are selected from warehouse stocks and tested until they are burst by centrifugal force. Such destructive testing allows Wood’s engineers to study the effects of construction and balance on sheave performance. The goal is to assure safe operation at normal speeds. Other continuing programs check product quality in the  laboratory and on the manufacturing line.

For applications with special requirements, Wood’s sheaves are also available on a made-to-order basis in either cast or ductile iron, and in Sure-Grip or bored-to-suit construction.

Wood’s stock narrow sheaves are available with the convenient Sure-Grip QD type bushing. Easy to install and remove, these split, tapered bushings grip the shaft with the equivalent of a shrink fit. This tight holding power eliminates freezing and fretting corrosion between the shaft and the bore and assures quick removal and interchangeability when necessary.

Stock sheaves are designed to carry the loads of all belts shown in this catalog and other similarly rated V-Belts. For special  higher rated V-Belts, consult Wood’s Engineering Department for recommendations.