K193947
Chamber
Bendix

This chamber forms the primary pneumatic actuator interface in S‑Cam spring brake systems, translating compressed air pressure into linear force that applies the service brake and stores energy for parking brake engagement. Its stroke length of 3 inches provides sufficient travel to actuate the brake shoes while preserving crisp engagement and reliable return to release position. Key connection points include stud length of 1.46 inches and service/parking port threads of 3/8‑18 NPT and 3/8‑18 NPTF, respectively, enabling secure plumbing and leak‑tight performance in demanding environments. With a maximum operating temperature of 175°F and a minimum of ‑40°F, the chamber is designed for broad climate tolerance, while a 45-degree air‑port orientation supports compact routing and cleaner packaging within the brake valve train. Constructed for welded clevis mounting and a 30/30 chamber configuration, it contributes to predictable braking response, reduced pedal effort, and consistent brake release. These characteristics, aligned with VMRS 013-004-027, category 41368, emphasize compatibility with S‑Cam spring brake systems and reliability across highway and vocational fleets requiring robust brake actuation.