The Chelsea 871 Series Power Take-Off, part number 871XAFJP-K3RS or 871XAFJPK3RS, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The 871 Series carries a continuous torque rating of up to 670 lb-ft (908 N-m) with no derating required for continuous-duty applications. Nine speed ratios and thirteen output configurations give technicians wide installation flexibility, while the compact housing keeps clearance conflicts to a minimum. A ductile iron bearing cap rated 117% stronger than gray iron, combined with an O-ring sealing configuration between the housing and bearing cap, directly addresses vibrational stress from modern engine designs. Options include Wet Spline pump flange lubrication, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC). The 871 Series supersedes the Chelsea 870 Series. Call us to confirm proper fit for your application.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque rating up to 670 lb-ft (908 N-m) - no derating needed for continuous duty
Ductile iron bearing cap - 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options for broad application coverage
Optional Wet Spline pump flange, SmartStart, Quiet Gear input, and Electronic Overspeed Control (EOC)
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft / 908 N-m (verify actual rating on application pages)
- Speed Ratios: Nine
- Output Options: Thirteen
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM
- Lubricant System: Pressure Lube and Wet Spline
- Output Shaft Types: SAE B (7/8 in. - 13T), SAE BB (1 in. - 15T), SAE C (1-1/4 in. - 14T), DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Continuous Operation: Yes
- Supersedes: Chelsea 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.
