The Chelsea 281 Series Power Take-Off, part number 281GSFJR-D5XV or 281GSFJRD5XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. The 281 Series builds on the proven 280 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap to improve clamp load, and clutch-pack steel discs that are 80% thicker to resist premature tooth wear. Nine speed ratios cover both low and high ranges. The optional wet spline lubrication provides 7 to 10 times greater shaft life, and Electronic Overspeed Control (EOC) protects downstream driven equipment. SmartStart reduces shock load at engagement. Rotatable cast-iron flanges reduce interference and improve pump clearance. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic PowerShift (hot-shift) operation for 10-bolt automatic transmissions including Allison
Ductile iron bearing cap, 117% stronger than gray iron predecessor
Enhanced clutch pack with steel discs 80% thicker to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap improves clamp load and resists vibration
Nine speed ratios covering low and high speed ranges
Wet spline lubrication option provides 7 to 10 times greater shaft life; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (Hot-Shift)
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating against application data
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine (including low and high)
- Lubrication: Pressure lube or wet spline option
- SmartStart: Available for shock-load reduction at start-up
- Electronic Overspeed Control (EOC): Included
- Part Number: 281GSFJR-D5XV or 281GSFJRD5XV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
