The Chelsea 871 Series Power Take-Off, part number 871XAFJW-B3RY or 871XAFJWB3RY, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmissions. The 871 Series delivers continuous torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous-duty applications. Nine speed ratios and thirteen output options cover a wide range of hydraulic pump configurations. A ductile iron bearing cap, rated 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improve clamp load and resist vibration from modern engine designs. The compact housing reduces clearance issues during installation. Optional Wet Spline pump flange, Quiet Gear input, SmartStart shock-load reduction, and Electronic Overspeed Control (EOC) further tailor the unit to demanding applications in fire and rescue, refuse, truck crane, and pumper-cleaner service. Call us to confirm proper fit for your application.
Features
10-bolt hydraulic PowerShift mounting, designed for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios for wide output speed range
Thirteen output options including SAE B, SAE C, and DIN pump flanges
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting Type: 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 1,000 RPM
- Speed Ratios: Nine
- 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 with Wet Spline
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
