877 Series Constant Mesh Power Take-Off
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Chelsea 877 Series is a constant mesh 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 897 Series, but without the extended shaft.
Power density is for what the Chelsea 877 Series Power Take-Off (PTO) is known. This series is constant mesh for applications that do not need to disengage like when using load-sense pumps. It 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. 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. The robust design of this PTO provides all the power necessary to get the work done. It features pressure lubrication integrated into the PTO housing that requires one hose for a simplified installation - the hose is included with the PTO. Eight internal gear ratios provide a wide variety of speeds to meet virtually all application requirements. Rotatable 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 877 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
- Rotatable Output Flanges to maximize clearance
- Wet Spline Technology to extend PTO & pump shaft life
- 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:
- 1410 Companion Flange
- 1-1/2" 10T Spline w/1410 flange
Output Power:
- 56+ HP
- 51+ kW
Transmission Manufacturer:
- Other
- Allison
Shift Type:
- Constant Mesh
Shaft Power:
- 500 RPM: 64, 1000: RPM 128 HP
- 500 RPM: 48, 1000: RPM 95 kW
Weight:
- 48 lb
- 22 kg
Literature and Reference Materials:
- 877 Series - Owners Manual - HY25-1380-M1_US
- 877 Series - Parts List - HY25-2870-M1_US
- 877 Series Sales Literature - HY25-0153-B1_US
- Chelsea Power Take-Off (PTO) General Information Catalog
- Chelsea Power Take-Off (PTO) Quick Reference Guide
- Chelsea Power Take-Off (PTO) Stud Kits - HY25-2002-M1_US
- Chelsea Power Take-Off (PTO) Wet Spline Option
- PTO-PNI-235 - New 870/877 Series
- PTO-PNI-249 - New Ratios for 870/877 and 890/897 Series on Allison 4000 Series Transmissions
Selector Guides:
Compliance, Certifications and Safety: