281 Series Power Take-Off

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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.

Specifications

ManufacturerParker
ModelOff
ConditionNew
Mounting Type10-Bolt
Continuous Torque390 lb-ft (Check Application Pages for Actual Torque Ratings), 529 Nm (Check Application Pages for Actual Torque Ratings)
Shift TypePowerShift (Hydraulic), Hydraulic
Continuous OperationYes
Transmission ManufacturerAllison
Output TypeSAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
LubricantP = Pressure Lube, W = Wet Spline
Intermittent Torque301 to 400 lb-ft, 501+ Nm
Output Power51+ kW, 56+ HP
Output Shaft TypeSmart 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 Power37 HP (500 RPM), 74 HP (1000 RPM), 28 kW (500 RPM), 55 kW (1000 RPM)
Weight50 lb, 22.7 kg