The Chelsea 660XFAHX-A3GF or 660XFAHXA3GF is a 660 Series Power Take-Off assembly designed for medium- to heavy-duty applications on 6-bolt manual transmissions. This unit uses a wire/cable mechanical shift and delivers up to 375 lb-ft intermittent torque (508 Nm), with shaft power ratings of 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. The 1-1/4" round output shaft with keyway suits a wide range of driven equipment. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and select others. Cast iron bearing caps and one-piece gears contribute to the 660 Series' durability under high-load cycling. Continuous operation is supported with a 30% torque de-rating. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 660 Series is suited for demanding vocational applications including dump trucks, aerial devices, service trucks, blower and product pumps, and snow and ice removal equipment. Four internal speed ratios and multiple shift options make this series adaptable across a wide range of installations. The 660 Series offers 26 output configurations, including Chelsea's 360-degree rotatable flange for flexible pump positioning. Tapered cone bearings on the output shaft and tapered bearings on the input shaft (in place of needle bearings) provide greater load-bearing capability. Reference documents include the 660 Series Parts List (HY25-2660-M1_US) and the 660 Series Sales Literature, available through Parker Chelsea.
Features
6-bolt mounting for most popular manual transmissions including Eaton/Fuller, Volvo/Mack, and Hino
Wire/cable mechanical shift operation
Intermittent torque capacity up to 375 lb-ft (508 Nm); continuous operation supported with 30% de-rating
1-1/4" round output shaft with keyway
One-piece gears for higher torque capacity
Cast iron bearing caps with greaseable shaft options
Tech Specs
- Intermittent Torque: 375 lb-ft (508 Nm) - Check Application Pages for Actual Torque Ratings
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, Hino, Other
- Output Shaft Type: 1-1/4" Round with Key
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP (27 kW) at 500 RPM, 71 HP (53 kW) at 1,000 RPM, 107 HP (80 kW) at 1,500 RPM
- Continuous Operation: Yes, with 30% torque de-rating
Additional Information
The Chelsea 660 Series is suited for demanding vocational applications including dump trucks, aerial devices, service trucks, blower and product pumps, and snow and ice removal equipment. Four internal speed ratios and multiple shift options make this series adaptable across a wide range of installations. The 660 Series offers 26 output configurations, including Chelsea's 360-degree rotatable flange for flexible pump positioning. Tapered cone bearings on the output shaft and tapered bearings on the input shaft (in place of needle bearings) provide greater load-bearing capability. Reference documents include the 660 Series Parts List (HY25-2660-M1_US) and the 660 Series Sales Literature, available through Parker Chelsea.
