The Chelsea 871XEFJW-N5RY is a 10-bolt PowerShift (hydraulic shift) Power Take-Off from the 871 Series, designed for Allison transmission applications. The 871 Series carries a continuous torque rating of up to 670 lb-ft (908 Nm) with no derating required for continuous duty operation. A ductile iron bearing cap, 117% stronger than the gray iron used in its predecessor, and an o-ring sealing configuration between the housing and bearing cap improve clamp load and reduce vibration-related wear. Nine speed ratios and thirteen output options give this PTO broad application flexibility across fire and rescue, refuse, truck crane, and pumper cleaner equipment. Wet Spline lubrication extends PTO and pump shaft life. The 871 Series is sold by Pro Gear and Transmission.
Features
10-bolt mounting configuration with compact housing to minimize clearance issues
PowerShift (hydraulic) shift type
Continuous torque capacity up to 670 lb-ft (908 Nm) - no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than the predecessor gray iron cap
O-ring sealing between housing and bearing cap improves clamp load and reduces vibration effects
Nine speed ratios and thirteen output shaft options
Wet Spline pump flange option extends PTO and pump shaft service life
Compatible with Allison transmission applications
Tech Specs
- Series: Chelsea 871 Series
- 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 1,000 RPM
- Output Types: SAE B Pump Flange, SAE C Pump Flange
- Output Shaft Options: SAE B (7/8"-13T), SAE BB (1"-15T), SAE C (1-1/4"-14T), DIN 5462, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Speed Ratios: Nine
- Continuous Operation: Yes
- Lubrication: Pressure Lube / Wet Spline
Additional Information
The 871 Series supersedes the Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and o-ring housing-to-cap seal, both aimed at reducing the damaging vibrational effects of modern engine designs. The series supports three Chelsea specialty options: Wet Spline, SmartStart (reduces shock load at start-up), and Quiet Gear input. Electronic Overspeed Control (EOC) is also available to protect driven equipment. Markets served include fire and rescue, refuse, truck cranes, and pumper cleaner applications.Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
