The Chelsea 660 Series Power Take-Off Assembly, part number 660GFAHX-A3XV or 660GFAHXA3XV, is a 6-bolt unit built for medium to heavy duty vocational applications. It uses a wire/cable mechanical shift and delivers up to 375 lb-ft intermittent torque per Chelsea series ratings. The 1-1/4" round output shaft with keyway accepts a wide range of driven equipment. Shaft power output runs 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and other 6-bolt manual units. The cast iron housing with tapered cone bearings on the output shaft and one-piece gears contribute to the series' load capacity and service life. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 660 Series is suited for demanding vocational duty cycles including dump trucks, aerial devices, service trucks, snow and ice removal equipment, and blower or product pump systems. The cast iron housing with tapered cone bearings on both the input and output shafts provides greater load-bearing capability compared to needle-bearing designs. Twenty-six output configurations are available across the 660 Series, along with four internal speed ratios and ten shift options. Chelsea's 360-degree rotatable flange option is available within the series for optimal pump positioning. Refer to Chelsea 660 Series Parts List HY25-2660-M1_US or the 660 Series Sales Literature for detailed ratio and output option breakdowns.
Features
6-bolt mounting fits most popular manual transmissions including Eaton/Fuller, Volvo/Mack, and Hino
Wire/cable mechanical shift type
Intermittent torque capacity up to 375 lb-ft (508 Nm) per series ratings
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 and cast iron bearing caps with greaseable shaft options
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (check application pages for actual torque ratings)
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with key
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP (500 RPM), 71 HP (1,000 RPM), 107 HP (1,500 RPM) / 27 kW (500 RPM), 53 kW (1,000 RPM), 80 kW (1,500 RPM)
- Compatible Transmission Manufacturers: Eaton/Fuller, Hino, Volvo/Mack, Other 6-bolt manual units
Additional Information
The Chelsea 660 Series is suited for demanding vocational duty cycles including dump trucks, aerial devices, service trucks, snow and ice removal equipment, and blower or product pump systems. The cast iron housing with tapered cone bearings on both the input and output shafts provides greater load-bearing capability compared to needle-bearing designs. Twenty-six output configurations are available across the 660 Series, along with four internal speed ratios and ten shift options. Chelsea's 360-degree rotatable flange option is available within the series for optimal pump positioning. Refer to Chelsea 660 Series Parts List HY25-2660-M1_US or the 660 Series Sales Literature for detailed ratio and output option breakdowns.
