The Chelsea 871 Series Power Take-Off, part number 871XHFJP-B5BV or 871XHFJPB5BV, is a 10-bolt PowerShift (hydraulic-shift) PTO engineered for Allison transmission applications. The 871 Series carries a continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty use. A ductile iron bearing cap delivers 117% greater strength compared to gray iron, while an O-ring sealing configuration between the housing and bearing cap reduces vibration-induced clamp loss. Nine speed ratios and thirteen output options cover a wide range of hydraulic pump configurations. The compact housing minimizes clearance issues in tight installations. Optional Quiet Gear input, SmartStart shock-load reduction, and Electronic Overspeed Control (EOC) round out the 871 Series feature set. Call us to confirm proper fit for your application.
The 871 Series supersedes the Chelsea 870 Series PTO, incorporating upgraded bearing cap material and improved sealing geometry to address vibration concerns from modern engine designs. The 871 Series is the only Chelsea PTO to offer all three premium options simultaneously: Wet Spline, SmartStart, and Quiet Gear. Typical markets include fire and rescue apparatus, truck cranes, pumper-cleaner trucks, and refuse vehicles.
Features
10-bolt PowerShift (hydraulic-shift) mounting configuration for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) with no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options for broad hydraulic pump compatibility
Optional Wet Spline pump flange, Quiet Gear input, SmartStart, and Electronic Overspeed Control (EOC) available
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant System: Pressure Lube (P) and Wet Spline (W)
- 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
- Output Flange Types: SAE B Pump Flange, SAE C Pump Flange
- Continuous Operation: Yes
Additional Information
The 871 Series supersedes the Chelsea 870 Series PTO, incorporating upgraded bearing cap material and improved sealing geometry to address vibration concerns from modern engine designs. The 871 Series is the only Chelsea PTO to offer all three premium options simultaneously: Wet Spline, SmartStart, and Quiet Gear. Typical markets include fire and rescue apparatus, truck cranes, pumper-cleaner trucks, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
