Features
10-bolt mounting pattern fits Allison automatic transmissions
Constant mesh, non-shiftable design suited for continuous-power mobile applications
1-1/4" round output shaft with key
Intermittent torque rating: 335 lb-ft (454 Nm), verify against application pages for your installation
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
360-degree rotatable output flanges improve installation clearance
SuperTorque gear option available for up to 20% additional torque capacity
Wet spline or greaseable shaft options extend PTO and pump shaft service life
Tech Specs
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- INTERMITTENT TORQUE: 335 lb-ft (454 Nm), check application pages for actual torque ratings for your installation
- OUTPUT POWER: 56+ HP (41-50 kW)
- SHAFT POWER: 32 HP at 500 RPM; 64 HP at 1,000 RPM (24 kW at 500 RPM; 48 kW at 1,000 RPM)
Additional Information

The Chelsea 267 Series is designed for aerial, refuse, snow and ice, military, and yard jockey applications requiring constant, uninterrupted power delivery to variable displacement piston pumps and load-sensing hydraulic systems. The 267 Series is available in five speed ratios and multiple output configurations, including SAE B, SAE C, and ISO 7652 pump flanges in addition to driveline output. The 360-degree rotatable flange simplifies installation in tight engine compartments. The optional SuperTorque gearing provides up to 20% greater torque capacity compared to a standard 267 Series unit. Wet spline lubrication is available to reduce wear on both the PTO and pump shaft over extended service intervals.
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
