Sunnen is the industry leader in honing solutions for quality brake drums for all vehicles. Sunnen honed brake drums provide smooth, consistent and quiet braking action.

Brake Drums
Sunnen has developed and delivered many brake drum honing solutions in the last two decades that are still producing quality brake drums today. Honed brake drums provide smoother and more consistent braking action than non-honed brake drums. The honed brake drum requires no break-in period to ensure against squeaking or chattering when the brakes are applied. The crosshatch pattern generated by honing ensures that the brake pads wear evenly in the center of the brake cylinder, unlike a turned finish that can cause the pads to follow the spiral turned surface texture off-center.

A Sunnen honing machine is capable of automatic dwell cycles to ensure that the brake drum blind bore is honed straight. Abrasives can be tailor made to satisfy the most demanding requirements of size, surface finish, and abrasive life. Custom fixtures are designed for quick load-unload cycles to improve throughput.

Sunnen produces the industry’s largest selection of honing machines – horizontal or vertical, single or multi spindle, automated or manual, standard or customized – and our systems are designed with a focus on reliability, flexibility, and ease of use.

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