The Chelsea 871 Series Power Take-Off, part number 871XEFJP-B5BV or 871XEFJPB5BV, is a 10-bolt, hydraulic PowerShift PTO designed for Allison transmissions. Continuous torque capacity reaches 670 lb-ft (908 N-m), with no derating required for continuous-duty operation. Nine speed ratios and thirteen output options cover a wide range of application requirements, including SAE B, SAE BB, and SAE C pump spline outputs. A ductile iron bearing cap rated 117% stronger than gray iron, combined with an O-ring sealing configuration between the housing and bearing cap, addresses vibrational stress from modern engine designs. Optional Wet Spline lubrication, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) are available within the series. The 871 Series replaces the earlier Chelsea 870 Series. Also cross-referenced as 870XEFJP-B5BV or 870XEFJPB5BV. Call us to confirm proper fit for your specific transmission and application.
Features
10-bolt hydraulic PowerShift mounting 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
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options including SAE B, SAE BB, and SAE C pump spline
Optional Wet Spline, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) available within series
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 1,000 RPM
- Output Shaft Options: 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 Options: SAE B Pump Flange, SAE C Pump Flange
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant Options: Pressure Lube, Wet Spline
- Continuous Operation: Yes
- Cross Reference: 870XEFJP-B5BV or 870XEFJPB5BV
- Replaces: Chelsea 870 Series
Additional Information
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
