The Chelsea 660 Series Power Take-Off, part number 660GSJAX-A5AF or 660GSJAXA5AF, is a 6-bolt mounted PTO built for medium to heavy duty vocational applications including dump trucks, aerial devices, service trucks, and snow removal equipment. Shift type is wire/cable mechanical, and the unit accepts a 1-1/4" round output shaft with keyway. Intermittent torque capacity for the 660 Series reaches 375 lb-ft (508 Nm); continuous operation is supported with a 30% de-rating. Shaft power output at 1,000 RPM is 71 HP (53 kW), climbing to 107 HP (80 kW) at 1,500 RPM. Compatible transmissions include Eaton/Fuller, Hino, Volvo/Mack, and other 6-bolt manual units. Tapered cone bearings on the output shaft and tapered bearings on the input shaft provide greater load capacity than needle-bearing designs. Call us to confirm proper fit for your transmission and application.
The Chelsea 660 Series offers 26 output configurations, four internal speed ratios, and ten shift options, making it a versatile fit across aerial, construction, and municipal vocational equipment. Applications include blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal equipment. For detailed ratio and output specifications specific to part number 660GSJAX-A5AF, consult the 660 Series Parts List (HY25-2660-M1_US) or the Chelsea Power Take-Off General Information Catalog. Not sure this is your part? Give us a call.
Features
6-bolt mounting pattern fits most popular manual transmissions including Eaton/Fuller, Hino, and Volvo/Mack
Wire/cable mechanical shift type
Intermittent torque capacity up to 375 lb-ft (508 Nm); continuous operation with 30% de-rating
1-1/4" round output shaft with keyway
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
One-piece gears for higher torque; cast iron bearing caps; greaseable shaft options
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (check application pages for actual torque ratings; series range 301-400 lb-ft / 501+ Nm)
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with 5/16" key
- Transmission Compatibility: Eaton/Fuller, Hino, Volvo/Mack, and other 6-bolt manual transmissions
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP / 27 kW (500 RPM), 71 HP / 53 kW (1,000 RPM), 107 HP / 80 kW (1,500 RPM)
- Lubrication: No Pressure Lube (X designation)
- Dimensions (H x W x L): 8.38 in. x 10.38 in. x 14.25 in.
Additional Information
The Chelsea 660 Series offers 26 output configurations, four internal speed ratios, and ten shift options, making it a versatile fit across aerial, construction, and municipal vocational equipment. Applications include blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal equipment. For detailed ratio and output specifications specific to part number 660GSJAX-A5AF, consult the 660 Series Parts List (HY25-2660-M1_US) or the Chelsea Power Take-Off General Information Catalog. Not sure this is your part? Give us a call.
