The Chelsea 871 Series Power Take-Off, part number 871LBFJW-B5TY or 871LBFJWB5TY, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmission applications. The 871 Series succeeds the popular 870 Series with meaningful upgrades: a ductile iron bearing cap rated 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap to reduce vibrational effects and improve clamp load. The compact housing reduces clearance concerns, making it a practical fit for fire and rescue, refuse, pumper/cleaner, and truck crane installations. Nine speed ratios and thirteen output options cover a wide range of driven-equipment requirements. Wet Spline, SmartStart, and Quiet Gear options are available on the 871 Series. The 871 Series is rated for continuous-duty operation. Call us to confirm the right configuration for your application.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
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 including low and high speeds; thirteen output options
Compact housing height reduces installation clearance issues
Wet Spline pump flange, SmartStart, and Quiet Gear options available; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 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
- Speed Ratios: Nine (including low and high)
- Output Options: Thirteen
- 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 Types: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
- Series: Chelsea 871 (replaces 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.
