The Chelsea 267XDFJP-M5AZ or 267XDFJPM5AZ is a constant mesh Power Take-Off from the Chelsea 267 Series, built on a 10-bolt mounting pattern engineered to fit Allison automatic transmissions. It delivers up to 335 lb-ft (454 Nm) intermittent torque and 64 HP shaft power at 1,000 RPM, making it well suited for variable displacement piston pump applications on refuse trucks, snow and ice equipment, yard jockey trucks, and aerial units. The output shaft is a 1-1/4" round with keyway. The 267 Series supports continuous operation with a 30% de-rating and is available with Chelsea's 360-degree rotatable flange for tight-clearance installations. Call us to confirm proper fit for your specific transmission and pump configuration.

The Chelsea 267 Series is compatible with variable displacement piston pumps and is used in refuse collection, snow and ice removal, yard jockey, aerial, and military applications. Five speed ratios are available across the 267 Series. Output flange options include SAE B, SAE C, ISO 7652, and driveline configurations. The SuperTorque option delivers up to 20% more torque capacity than a standard 267 Series unit. Wet spline lubrication (W) and pressure lube (P) variants are available to suit different installation environments.
Features
10-bolt mounting pattern fits Allison automatic transmissions
Constant mesh design supports continuous operation (30% de-rating applies)
Intermittent torque rating: 335 lb-ft (454 Nm) - check application pages for actual ratings
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
1-1/4" round output shaft with keyway
360-degree rotatable flange option improves installation clearance
SuperTorque gear option provides up to 20% additional torque capacity
Wet spline or greaseable shaft options available to extend PTO and pump shaft service life
Tech Specs
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (check application pages for actual torque ratings; range: 301-400 lb-ft / 401-500 Nm)
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with keyway
- OUTPUT POWER: 56+ HP / 41-50 kW
- SHAFT POWER: 32 HP (500 RPM), 64 HP (1,000 RPM) / 24 kW (500 RPM), 48 kW (1,000 RPM)
- CONTINUOUS OPERATION: Yes, with 30% de-rating
Additional Information

The Chelsea 267 Series is compatible with variable displacement piston pumps and is used in refuse collection, snow and ice removal, yard jockey, aerial, and military applications. Five speed ratios are available across the 267 Series. Output flange options include SAE B, SAE C, ISO 7652, and driveline configurations. The SuperTorque option delivers up to 20% more torque capacity than a standard 267 Series unit. Wet spline lubrication (W) and pressure lube (P) variants are available to suit different installation environments.
