The Chelsea 281 Series Power Take-Off, part number 281GCFJP-G5XV or 281GCFJPG5XV, is a hydraulically shifted hot shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. It carries a continuous torque rating of 390 lb-ft (529 Nm) and offers nine speed ratios covering both low and high ranges. Output options include SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline configurations. The ductile iron bearing cap is 117% stronger than gray iron, and an 80% thicker clutch pack resists premature tooth wear. An o-ring sealing configuration between the housing and bearing cap improves clamp load and helps counter vibration from modern engine designs. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic (PowerShift) hot shift operation for Allison automatic transmissions with 10-bolt aperture
Ductile iron bearing cap, 117% stronger than gray iron, with o-ring seal configuration between housing and cap for improved clamp load
Enhanced clutch pack with 80% thicker steel disks to resist premature tooth wear
Nine speed ratios available, including low and high speed options
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) and SmartStart option reduces shock load at start-up
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift) Hot Shift
- Transmission Compatibility: Allison automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: 3/4 in. 11-tooth pump spline, SAE B 7/8 in. 13-tooth pump spline, SAE C 1-1/4 in. 14-tooth pump spline, SmartStart 1-1/4 in. round shaft with 5/16 in. key, 1410 companion flange
- Output Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
- Speed Ratios: Nine ratios including low and high
- Continuous Operation: Yes
- Lubrication: Pressure lube or Wet Spline option
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
