The Chelsea 871XEQTP-B5RK is a 10-bolt PowerShift (hydraulic shift) Power Take-Off from Chelsea's 871 Series, designed for Allison transmissions. The 871 Series features a ductile iron bearing cap rated 117% stronger than the gray iron used in the previous 870 Series, and an o-ring sealing configuration between the housing and bearing cap to improve clamp load and reduce the effects of engine vibration. Continuous torque capacity reaches 670 lb-ft (908 Nm) with no derating required for continuous duty. Nine speed ratios and thirteen output options cover a wide range of application requirements. The compact housing is designed to reduce clearance concerns during installation. Available output configurations include SAE B, SAE BB, and SAE C pump splines among others. A genuine Chelsea part, sold by Pro Gear and Transmission.
Reference documents: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List - HY25-2871-M1/US; 871 Series Sales Literature.
Features
10-bolt mounting, hydraulic PowerShift actuation
Allison transmission application
Continuous torque capacity up to 670 lb-ft (908 Nm) with no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than the gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load
Nine speed ratios and thirteen output options
Compact housing designed to reduce installation clearance issues
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 Nm)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Output Shaft Options: SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 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
- Continuous Operation: Yes
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant: Pressure Lube / Wet Spline
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades over the 870 include a ductile iron bearing cap and an o-ring sealing configuration for improved durability under engine vibration loads. The series supports three Chelsea-exclusive options: Wet Spline (extends PTO and pump shaft life), SmartStart (reduces shock load at start-up), and Quiet Gear input. Electronic Overspeed Control (EOC) is available to protect driven equipment. Typical markets include fire and rescue, truck cranes, pumper cleaner, and refuse vehicles.Reference documents: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List - HY25-2871-M1/US; 871 Series Sales Literature.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
