Features
10-bolt PowerShift (hydraulic shift) mounting configuration for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron, handles modern engine vibration
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Continuous torque capacity up to 670 lb-ft (908 N-m) - no derating needed for continuous-duty use
Nine speed ratios and thirteen output options for broad hydraulic system compatibility
Supports Wet Spline, SmartStart, and Quiet Gear options - the only Chelsea PTO to offer all three
Electronic Overspeed Control (EOC) available to protect driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque Capacity: 670 lb-ft (908 N-m)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine available
- Output Options: Thirteen available
- 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
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
- Series: Chelsea 871 Series (replaces 870 Series)
Additional Information
The Chelsea 871 Series is suited for demanding mobile equipment markets including fire and rescue, truck cranes, pumper cleaners, and refuse vehicles. The 871 Series was developed as a direct upgrade to the popular 870 Series PTO, carrying forward the same mounting footprint while adding the ductile iron bearing cap, o-ring sealing, and support for Wet Spline, SmartStart, and Quiet Gear options. Parker Chelsea documentation for this series includes the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
