Features
10-bolt hydraulic PowerShift mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) - no derating for continuous duty
Nine speed ratios covering low and high speed applications
Thirteen output options including SAE B, SAE BB, SAE C pump splines and flange configurations
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
Wet Spline pump flange extends PTO and pump shaft service life
SmartStart option reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Shift Type: Hydraulic PowerShift
- Mounting: 10-Bolt
- Transmission Compatibility: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM
- Speed Ratios: Nine (includes low and high)
- Output Options: Thirteen configurations
- 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: Rated for continuous duty
Additional Information
The 871 Series replaces the Chelsea 870 Series PTO and is the only Chelsea PTO to offer all three premium options together: Wet Spline, SmartStart, and Quiet Gear. Typical markets include fire and rescue, truck cranes, pumper cleaners, and refuse vehicles. The compact housing height is engineered to reduce clearance conflicts during installation, and multiple assembly arrangements expand mounting possibilities.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
