Browning 1296987 Tightener Shaft 7-11/16 Inch Oal

Product Description

The BROWNING 1296987 is a steel tightener shaft designed for use with drive tightener and idler assemblies in belt-drive systems. With an overall length of 7-11/16 inches, a shaft diameter of 1-1/2 inches, and a shaft length of 6 inches, this component provides the structural interface needed to maintain proper belt tension across rotating drive assemblies. Manufactured from 52100-grade steel, it delivers the hardness and wear resistance required for continuous-duty industrial and commercial drive applications. Mechanical technicians and millwrights install this shaft as a direct component in tightener assemblies where precise tensioning of V-belts or flat belts is critical to drivetrain performance.

This tightener shaft is suited for use in industrial drive systems where belt tighteners and idlers are employed to manage belt slack, reduce vibration, and extend belt service life. Typical applications include HVAC blower drive systems, conveyor drives, pump drives, and commercial mechanical equipment using belt-and-sheave power transmission setups. The 52100 bearing-grade steel construction makes it appropriate for demanding environments with moderate to high radial loading on the shaft body.

Key Features

• Overall length of 7-11/16 inches suits standard drive tightener assembly configurations
• 1-1/2 inch shaft diameter provides robust load-bearing capacity for belt tension applications
• 6 inch shaft length accommodates typical idler and tightener mounting depths
• 52100-grade steel construction offers high hardness and fatigue resistance under cyclic loading
• Compatible with drive tightener and idler style assemblies across a range of belt-drive systems

Compatibility

Designed for use with drive tightener and idler assemblies requiring a 1-1/2 inch diameter shaft with a 7-11/16 inch overall length. Verify tightener housing bore diameter and shaft retention method before installation.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out all drive power before removing or installing any drivetrain component per OSHA lockout/tagout requirements. Ensure the shaft is fully seated and secured in the tightener housing before re-tensioning the belt. Do not exceed the tightener assembly manufacturer's specified belt tension range.