Features
Ductile iron bearing cap: 117% stronger than gray iron predecessor
Enhanced clutch pack: steel discs 80% thicker than previous design to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap to reduce vibrational effects and improve clamp load
Nine speed ratios including low and high-speed ranges
Wet spline lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at start-up
Positive stop for driveline outputs eliminates oil seal damage from coupling
Hose included: no separate order required
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Compatible Transmissions: Allison automatic transmissions (10-bolt aperture)
- Continuous Torque (Series): 390 lb-ft (529 Nm) - verify actual rating on application page
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: SAE B (7/8 in. - 13T) Pump Spline, SAE C (1-1/4 in. - 14T) Pump Spline, 3/4 in. - 11T Pump Spline, SmartStart Round Shaft (1-1/4 in. - 5/16 in. Key), 1410 Companion Flange
- Speed Ratios: Nine (includes low and high speeds)
- Lubrication: Pressure lube and wet spline options
- Continuous Operation: Yes
- Part Number: 281GSFJP-K5SD or 281GSFJPK5SD
Additional Information
Parker Chelsea documents for this series: 281/288 Series Parts List (HY25-2281-M1/US); 267/281/288/871/878 Series Owner's Manual; 281 Series Sales Literature; Chelsea PTO Stud Kits (HY25-2002-M1_US). The 281 Series serves fire and rescue, refuse, pumper cleaner, and truck crane applications. Not sure this is the right PTO for your transmission? Give us a call.
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
