870 Series PowerShift Power Take-Off

Power density is for what the Chelsea 870 Series Hydraulic Power Take-Offs (PTOs) for Allison automatic transmission are known for. 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 requirement and a demanding work load. This PTO solution offers two assembly arrangements 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. The continuous torque rating of the 870 series PTO reduces the likelihood of failure as the PTO is no longer the weakest part of the system which will reduce the external spend on field service.

The 870 Series 10-Bolt powershift PTO 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 & Ice, Refuse, Aerial, and Defense truck requirements. 

Markets:

• Aerial
• Defense
• On-Highway
• Other Mobile

Features and Benefits:

• Compact housing height reduces clearance issues
• Integral actuation valve simplifies plumbing and reduces installation time
• Wet Spline Technology to extend PTO & pump shaft life
• Electronic Overspeed Control (EOC) protects driven equipment
• Two Year Warranty

Applications:

• Fire & Rescue Trucks
• Pumper Cleaner
• Oil & Gas
• Refuse Trucks
• Snow & Ice

Continuous Torque:

• 670 lb-ft (Check Application Pages for Actual Torque Ratings)
• 908 Nm (Check Application Pages for Actual Torque Ratings)

Mounting Type:

• 10-Bolt

Output Shaft Type:

• Rotatable Pump Flange

Output Power:

• 56+ HP
• 51+ kW

Transmission Manufacturer:

• Other
• Allison

Shift Type:

• Hydraulic
• PowerShift (Hydraulic)

Shaft Power:

• 500 RPM: 64, 1000: RPM 128 HP
• 500 RPM: 48, 1000: RPM 95 kW

Weight:

• 56 lb
• 25 kg

Literature and Reference Materials:

• 870 Series - Owners Manual - HY25-1380-M1_US
• 870 Series - Parts List - HY25-2870-M1_US
• 870 Series Sales Literature - HY25-0152-B1_US
• Chelsea EOC Box Owners Manual - HY25-1650-M1_US
• Chelsea EOC Box Sales Literature - HY25-0096-B1_US
• Chelsea Power Take-Off (PTO) General Information Catalog
• Chelsea Power Take-Off (PTO) Quick Reference Guide
• Chelsea Power Take-Off (PTO) Smart Start Option
• Chelsea Power Take-Off (PTO) Stud Kits - HY25-2002-M1_US
• Chelsea Power Take-Off (PTO) Wet Spline Option
• Chelsea Service Manual - HY25-6870-M1/US
• PTO-PNI-235 - New 870/877 Series
• PTO-PNI-249 - New Ratios for 870/877 and 890/897 Series on Allison 4000 Series Transmissions
• PTO-PNI-261 - 280/870 "M" Shift Option Code Change
• PTO-PNI-269 - 280/870 BA Changed to BV
• PTO-PNI-277 - PTO Switch Bracket Update
• PTO-TEC-160 - 280/870 Bearing Cap Bolt Enhancement

Product Demos & Tutorials:

• Chelsea 870 & 890 Series Video

Selector Guides:

• Product Guide - Transportation Original Equipment Manufacturer

Compliance, Certifications and Safety:

• Chelsea Power Take-Off (PTO) Safety Information