The Chelsea 871 Series Power Take-Off, part number 871XDQTW-D3RY or 871XDQTWD3RY, is a 10-bolt hydraulic PowerShift PTO engineered for Allison transmissions. Continuous torque capacity reaches 670 lb-ft (908 N-m), and the unit is rated for continuous-duty operation without derating. Nine gear ratios cover both low- and high-speed demands, while thirteen output options accommodate a wide range of pump configurations including SAE B, SAE BB, SAE C, and DIN pump splines plus companion flange arrangements. The compact housing keeps clearance issues to a minimum. A ductile iron bearing cap rated 117% stronger than gray iron, combined with an O-ring sealing configuration between housing and cap, combats the vibrational loads of modern engine designs. The Wet Spline pump flange lubricates the output interface to extend both PTO and pump shaft service life. Call us to confirm proper fit for your application.
Features
10-bolt hydraulic PowerShift mounting for Allison transmissions
Continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty use
Ductile iron bearing cap, 117% stronger than gray iron, with O-ring seal to improve clamp load and resist vibration
Nine gear ratios spanning low and high speed ranges
Thirteen output options including SAE B, SAE BB, SAE C, and DIN pump spline configurations
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m) - check application pages for actual torque ratings
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM
- Speed Ratios: Nine (includes low and high speeds)
- Output Options: Thirteen
- Output Shaft Types: SAE B (7/8 in. - 13T) Pump Spline, SAE BB (1 in. - 15T) Pump Spline, SAE C (1-1/4 in. - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
- Options Available: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
