The Midland Haldex MA15621 is a MAXIBRAKE R-Series air-application push type spring brake actuator with a 3.00 in. stroke, #50 spring force, and an 8 in. push rod rated to a maximum of 125 PSI. The all-steel housing resists corrosion, while the aluminum piston and nylon bearings provide guidance stability by diffusing lateral and twisting motion. Steel alloy springs are epoxy coated for rust protection, and deeper spring cavities deliver uniform output over an extended service life. The unit has no manual release, so the vehicle cannot be moved until air supply reaches a safe level. OEM part number KSMR3PH50-800NN. Cross-referenced as 2240013 and 5396-MA15621. Sold individually by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
MAXIBRAKE R-Series air-application push type spring brake actuator
3.00 in. stroke with #50 spring force and 8 in. push rod
Maximum air pressure: 125 PSI
All-steel housing for corrosion resistance; aluminum piston with nylon bearings for lateral and twist stability
Epoxy-coated steel alloy springs with deeper spring cavities for uniform output and extended service life
No manual release mechanism - vehicle remains immobile until air supply is at a safe level
Tech Specs
- Stroke: 3.00 in.
- Spring: #50
- Push Rod: 8 in.
- Maximum Air Pressure: 125 PSI
- OEM Part Number: KSMR3PH50-800NN
