The Wabco 9253920490 or 925-392-049-0 is a Type 30/30 air brake chamber assembly engineered to OE specification for cam-type drum brake systems. It delivers a 2.99 in stroke on a 5.75 in push rod with 5/8"-18 UNF push-rod threads, and handles a maximum operating pressure of 145.0 psi with a release pressure of 66.72 psi. Mounting uses 5/8"-11 UNC bolts spaced 4.75 in apart at 1.50 in bolt length. Dual 3/8"-18 NPTF ports are oriented at 90 degrees. Total chamber length is 14.29 in. The unit is supplied without boot or yoke and is rated from -40°C to +80°C. Call us to confirm proper fit for your application.
Features
Type 30/30 cam-operated air brake chamber, OE specification
Stroke: 2.99 in; push-rod length: 5.75 in with 5/8"-18 UNF thread
Max. operating pressure: 145.0 psi; release pressure: 66.72 psi
Mounting bolts: 5/8"-11 UNC, 4.75 in center-to-center, 1.50 in length
Dual 3/8"-18 NPTF ports at 90-degree angle; total length 14.29 in
Operating temperature range: -40°C to +80°C; supplied without boot or yoke
Tech Specs
- Brand: Wabco
- Part Number: 9253920490 or 925-392-049-0
- Type: 30/30
- Type of Operation: Cam
- Stroke: 2.99 in
- Total Length: 14.29 in
- Push-Rod Length: 5.75 in
- Push-Rod Thread: 5/8" - 18 UNF
- Max. Operating Pressure: 145.0 psi
- Release Pressure: 66.72 psi
- Bolt Thread: 5/8" - 11 UNC
- Bolt Length: 1.50 in
- Distance Between Bolts: 4.75 in
- Port Thread 1: 3/8" - 18 NPTF
- Port Thread 2: 3/8" - 18 NPTF
- Port Angle: 90°
- Temperature Range: -40°C to +80°C
- Version: Without boot
- Yoke: Without
- Technical Specification: OE specification
