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CHELSEA part description

Representative Image - The product image above applies to all Chelsea Series 870 PTOs and is not part specific. Please verify the product using the part number.

Chelsea 870 Series is a hot shift PTO designed to fit Allison and CAT 10-Bolt transmissions. It has the highest torque capability in the smallest package available – up to 670 lbs-ft. It is as robust as the 890 Series, but without the extended shaft.

Power density is for what the Chelsea 870 Series Power Take-Off (PTO) is known. This series utilizes a compact housing that helps eliminate clearance issues, but employs robust moving parts to ensure the best performance. It is available only for 10-Bolt applications that have a high torque requirements and a demanding work load. Two assembly arrangements are offered to maximize installation clearance. High capacity bearings and superior gear designs provide torque ratings up to 670 lbs-ft for the ultimate performance. There is no need to de-rate the PTO for continuous applications. It features six shift options, four of which are integrated into the PTO housing that require one hose for a simplified installation - the hose is included with the PTO. Our popular Electronic Overspeed Control (EOC) is also available to protect the PTO and driven equipment. Eight internal gear ratios provide a wide variety of speeds to meet virtually all application requirements. Direct mount pump flange options are also available with our Wet Spline Technology that provides increased PTO and pump shaft life. Versatility, power, ease of maintenance and installation make the 870 Series the BEST choice for Snow and Ice. Refuse, Aerial, and Defense truck requirements.

  • Aerial
  • Defense
  • On-Highway
  • Other Mobile
  • Products Features:
    • Compact housing height reduces clearance issues
    • Integral actuation valve simplifies plumbing and reduces installation time
    • Wet Spline Technology to extend PTO and pump shaft life
    • Electronic Overspeed Control (EOC) protects driven equipment
    • Two Year Warranty
    • Fire and Rescue Trucks
    • Pumper Cleaner
    • Oil and Gas
    • Refuse Trucks
    • Snow and Ice
    Performance Characteristics:
    Mounting Style: 10-Bolt
    Shift Type: PowerShift Hydraulic
    Standard Output Shaft Size: 1-1/2" 10 Spline with 1410 Flange
    Continuous Torque Rating (Lbs-ft): 670
    Continuous Torque Rating (Nm): 908
    Continuous Rating for Continuous Service:
    At 500 R.P.M. of Output Shaft (HP): 64
    At 500 R.P.M. of Output Shaft (Kw): 48
    At 1000 R.P.M. of Output Shaft (HP): 128
    At 1000 R.P.M. of Output Shaft (Kw): 95
    Approximate Weight: 56 lbs. [25 kg]
    * Check Application Pages for Actual Torque Ratings


    Mounting Type: Standard Mount
    Gear Ratio: 24/40
    Input Gear Type: 50-Teeth Input Gear, 24-Teeth Ratio Gear, 40-Teeth Output Gear
    Lubrication Type: with Pressure Lube
    Shift Type: 12V Electric / Hydraulic
    Assembly Arrangement: 5
    Output Type: Rotatable SAE "C" 2- or 4-Bolt Flange, SAE "C" Shaft (1.25"-14T)
    Application: Allison
    CHELSEA 870XAFJP-B5RS Cross Reference

    We have 2 alternatives for the 870XAFJP-B5RS by CHELSEA:

    Chelsea®, a division of Parker, manufactures and supplies a comprehensive selection of Power Take-Off (PTO) products for the mobile vocational and truck markets. Over the years, this company has grown exponentially, thanks to its global network of distribution centers in North America, Europe, Asia, and Australia. It also attributes its continued success to the individual employee's full commitment to providing only the highest quality products to its customers worldwide. More people choose this brand because its board range of products is offered with varying torque capacities, internal speeds, and output options. So whatever your driven equipment requirement is, Parker Chelsea has got you covered.


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