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The Chelsea 871 Series Power Take-Off, part number 871XBFJR-D5RY or 871XBFJRD5RY, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The 871 Series carries a continuous torque rating of up to 670 lb-ft (908 N-m) with no derating required for continuous-duty use. Nine available speed ratios and thirteen output configurations give technicians broad flexibility across fire and rescue, refuse, truck crane, and pumper-cleaner applications. The ductile iron bearing cap is 117% stronger than gray iron, and an o-ring sealing configuration between the housing and bearing cap reduces vibrational effects while improving clamp load. Wet Spline, SmartStart, and Quiet Gear options are all available on this series. The 871 Series replaces the earlier Chelsea 870 Series PTO. Call us to confirm the correct configuration for your application.
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft / 908 N-m (verify actual rating on application pages)
- Speed Ratios: Nine available
- Output Options: Thirteen available
- Lubricant Options: Pressure Lube (P), 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
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM (48 kW at 500 RPM / 95 kW at 1000 RPM)
- Replaces: Chelsea 870 Series PTO
 The Chelsea 871 Series is the only Chelsea PTO to offer all three of the manufacturer's premium options together: Wet Spline pump flange for extended PTO and pump shaft life, SmartStart to reduce shock load at start-up, and Quiet Gear input to lower operating noise. The compact housing profile is designed to reduce clearance conflicts during installation. This series is suited for fire and rescue apparatus, refuse trucks, truck cranes, and pumper-cleaner vehicles. The 871 Series succeeds the Chelsea 870 Series, incorporating upgraded bearing cap material and an improved sealing arrangement. Reference documents include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
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Features
- 10-bolt PowerShift (hydraulic) mounting for Allison transmissions
- Continuous torque capacity up to 670 lb-ft (908 N-m) - no continuous-duty derating required
- Ductile iron bearing cap, 117% stronger than gray iron
- O-ring sealing between housing and bearing cap reduces vibration effects and improves clamp load
- Nine speed ratios and thirteen output options
- Wet Spline, SmartStart, and Quiet Gear input options available on this series
- Electronic Overspeed Control (EOC) protects driven equipment
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