A-Lenth of the chamber:  226mm  (the stud housing AND spring housing).

Clamp ring outside diameter: 186mm

Push rod lenth (without stroke) :  205mm

Push rod thread: 5/8-18UNF 

Mouting screw bolt thread: 5/8-11UNC

Air port thread: 3/8-NPTF

Clevis pin diameter:12.7mm

Stroke:64mm

Maximum operating pressure: 1MPa

Operating temperature range: -40°C to +80°C

Medium:  Compressed air

Product standard:  SAE J1469 Aug 95,ISO9001-2000

This type of spring brake chambers is used on axles fitted with drum brakes, to provide the service(and secondary) andparking brake functions.The release tool allows the parking brake force to be removed if pressure no longer present.

SPRING BRAKE CHAMBER