Wabco air brake chamber part number 9253920730 or 925-392-073-0 is a Type 30/30 cam-operated assembly built to OE specification. It delivers a 2.99-inch stroke and handles a maximum operating pressure of 145.0 psi, with a release pressure of 66.72 psi. The push rod measures 3.55 inches, the clevis pin 0.51 inches, and the unit spans 14.29 inches total length. Mounting uses 5/8"-11 UNC bolt threads at 1.50-inch bolt lengths with a 4.75-inch center-to-center bolt spacing. Both ports are 3/8"-18 NPTF at a 20-degree port angle. The chamber is rated for -40°C to +80°C and ships without a boot. A genuine Wabco part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Type 30/30 cam-operated air brake chamber assembly
2.99 in stroke; 3.55 in push-rod length
Max. operating pressure 145.0 psi; release pressure 66.72 psi
5/8"-11 UNC bolt threads, 1.50 in bolt length, 4.75 in bolt spacing
Dual 3/8"-18 NPTF ports at 20-degree port angle
Rated -40°C to +80°C; supplied without boot
Tech Specs
- Brand: Wabco
- Type: 30/30
- Type of operation: Cam
- Technical specification: OE specification
- Stroke: 2.99 in
- Push-rod length: 3.55 in
- Total length: 14.29 in
- Clevis pin diameter: 0.51 in
- Bolt threads: 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: 20 degrees
- Max. operating pressure: 145.0 psi
- Release pressure: 66.72 psi
- Temperature range: -40°C to +80°C
- Version: Without boot
