The Chelsea 871 Series Power Take-Off, part number 871LBFJW-B3TS or 871LBFJWB3TS, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The series delivers continuous torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous-duty applications. A ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap reduce vibrational effects and improve clamp load. Nine speed ratios and thirteen output options give installers broad flexibility. The 871 Series is the only Chelsea PTO to combine Wet Spline, SmartStart, and Quiet Gear options in a single platform. Call us to confirm proper fit for your specific transmission and application.
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and revised O-ring sealing configuration, both engineered to address vibrational loads from current and future engine designs. The Electronic Overspeed Control (EOC) option protects driven equipment from overspeed events. SmartStart reduces shock load at start-up for applications where that protection is needed. Typical markets include fire and rescue, truck cranes, pumper-cleaner units, and refuse vehicles.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
Continuous torque capacity up to 670 lb-ft / 908 N-m, no continuous-duty derating required
Nine speed ratios and thirteen output options
Wet Spline, SmartStart, and Quiet Gear options available on a single platform
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft / 908 N-m
- 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: Pressure Lube and Wet Spline
- Continuous Operation: Yes
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and revised O-ring sealing configuration, both engineered to address vibrational loads from current and future engine designs. The Electronic Overspeed Control (EOC) option protects driven equipment from overspeed events. SmartStart reduces shock load at start-up for applications where that protection is needed. Typical markets include fire and rescue, truck cranes, pumper-cleaner units, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
