PowerShift (Hydraulic) 10-Bolt Power Take-Off (PTO) - 281 Series | Product Series

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PowerShift (Hydraulic) 10-Bolt Power Take-Off (PTO) - 281 Series

PowerShift (Hydraulic) 10-Bolt Power Take-Off (PTO) - 281 Series

Chelsea 281 Series is a hydraulically shifted hot shift PTO designed for automatic transmissions with a 10-Bolt aperture, commonly found on Allison and Caterpillar transmissions.

Technical Specifications

  • Mounting Type: 10-Bolt
  • Continuous Torque: 390 lb-ft (Check Application Pages for Actual Torque Ratings), 529 Nm (Check Application Pages for Actual Torque Ratings)
  • Shift Type: PowerShift (Hydraulic), Hydraulic
  • Continuous Operation: Yes
  • Transmission Manufacturer: Allison
  • Output Type: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
  • Lubricant: P = Pressure Lube, W = Wet Spline
  • Intermittent Torque: 301 to 400 lb-ft, 501+ Nm
  • Output Power: 51+ kW, 56+ HP
  • Output Shaft Type: Smart Start - Round Shaft (1-1/4" - 5/16" Key), 3/4" - 11T Pump Spline, SAE B (7/8" - 13T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Companion Flange, DIN 120 Flange, DIN 100 Flange
  • Shaft Power: 37 HP (500 RPM), 74 HP (1000 RPM), 28 kW (500 RPM), 55 kW (1000 RPM)
  • Weight: 50 lb, 22.7 kg
Safety Warning

Full Product Description

The 281 Series Power Take-Off is evidence that Parker Chelsea is constantly investing in finding the world’s greatest solutions to industry challenges. Chelsea’s 281 Series PTO is an evolution of the top-selling 280 Series PTO. Upgrades include a ductile iron bearing cap which is 117% stronger than its predecessor. It also features an o-ring sealing configuration between the housing and bearing cap to improve clamp load and the thickness of the steel discs within the clutch pack have been increased by 80%. All of these improvements are focused on reducing the damaging vibrational effects caused by today’s and future engine designs.


Markets:

• Fire and Rescue

• Truck Cranes

• Pumper Cleaner

• Refuse


Features and Benefits:

• Ductile Iron Bearing Cap – 117% stronger than gray iron.

• Improved Seal – O-ring sealing configuration to reduce vibrational affects and improve clamp load.

• Enhanced Clutch Pack – 80% thicker steel disks in the clutch pack to resist premature tooth wear.

• Torque – Single, continuous duty torque rating.

• Clearance – Rotatable cast iron flanges to improve pump clearance.

• Positive Stop for Driveline Outputs – Eliminates oil seal damage from coupling.

• Wet Spline Lubrication Option – Provides 7 to 10 times greater shaft life.

• Speeds – Nine speed ratios including low and high-speeds.

• SmartStart – Reduces shock load at start-up for certain applications.

• Insurance – Electronic Overspeed Control (EOC) protects driven equipment.

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