K139899
Spring Brake (S-Cam)
Bendix

This S-Cam spring brake assembly integrates a versatile 45 degree clamp angle with a 1.50 inch stud length, 3 inch stroke, and a 4.75 inch stud distance to fit a wide range of drum brake brackets. The push rod length is 1 inch, and the construction provides 5/8-11 UNC-2A threaded studs and 5/8-18 UNF-2A push rod threads, along with 3/8-18 NPT parking and service port threads. An air port position of 160 degrees optimizes line routing for efficient air delivery and minimal interference with adjacent components. The device is rated for operation from cryogenic to hot environments (operating range up to 175 F and down to -40 F) and is built as part of a 30/36 chamber family to deliver reliable actuation and fail-safe parking. This component is central to safe, predictable parking brake performance and reliable emergency braking in heavy-duty applications, ensuring consistent engagement across a broad spectrum of fleet configurations and conditions.