Features
10-bolt mounting pattern for Allison and compatible automatic transmissions
Constant mesh shift type - non-shiftable design suited for continuous-duty mobile hydraulic applications
1-1/4" round output shaft with key
Intermittent torque up to 335 lb-ft (454 Nm) - check Chelsea application pages for your specific rating
Shaft power: 32 HP at 500 RPM, 64 HP at 1000 RPM
360-degree rotatable flange for clearance flexibility; SuperTorque gear option and wet spline or greaseable shaft options available
Tech Specs
- INTERMITTENT TORQUE: 335 lb-ft (454 Nm) - Check Application Pages for Actual Torque Ratings; series range 301-400 lb-ft (401-500 Nm)
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- OUTPUT POWER: 56+ HP (41-50 kW)
- SHAFT POWER: 32 HP at 500 RPM; 64 HP at 1000 RPM (24 kW at 500 RPM; 48 kW at 1000 RPM)
- TRANSMISSION MANUFACTURER: Allison and compatible automatic transmissions
Additional Information

The Chelsea 267 Series is available in five speed ratios and multiple output configurations. It exceeds the torque capacity of a 6-bolt PTO while providing tighter sealing through its 10-bolt pattern. Common applications include snow plow trucks, small refuse trucks, and yard jockey trucks. The SuperTorque option delivers up to 20% more torque capacity compared to a standard 267 Series unit. Continuous operation is supported with a 30% de-rating applied. Output flange options across the series include SAE B, SAE C, and ISO 7652 pump flanges as well as driveline outputs.
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
