The Chelsea 267SDFJP-M5XX or 267SDFJPM5XX is a constant-mesh power take-off assembly designed for Allison transmissions, mounting via a 10-bolt pattern. The 1-1/4" round output shaft accepts a keyed connection, and intermittent torque is rated at 335 lb-ft (454 Nm), verify the exact figure against Chelsea application pages for your installation. Shaft power output reaches 64 HP at 1,000 RPM (48 kW). Rotatable flanges allow positioning adjustments for tighter engine-bay clearances. Wet spline or greaseable shaft options help extend service life on both the PTO and driven pump shaft. Super Torque gear sets are available for higher-demand applications. Call us to confirm proper fit for your transmission and vehicle.
Features
10-bolt mounting pattern for Allison and compatible transmissions
Constant mesh shift type for smooth, reliable power transfer
1-1/4" round output shaft with keyway
Intermittent torque rating: 335 lb-ft (454 Nm), confirm against Chelsea application pages
Shaft power output: 32 HP at 500 RPM, 64 HP at 1,000 RPM
Rotatable flanges for improved clearance; wet spline or greaseable shaft options available
Tech Specs
- SHIFT TYPE: Constant Mesh
- MOUNTING TYPE: 10-Bolt
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with keyway
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (check Chelsea application pages for your specific installation)
- OUTPUT POWER: 56+ HP
- SHAFT POWER: 500 RPM: 32 HP (24 kW) | 1,000 RPM: 64 HP (48 kW)
Additional Information
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
