The Chelsea 660XFAHX-A3AF or 660XFAHXA3AF is a 660 Series Power Take-Off assembly built for medium- to heavy-duty vocational applications. It mounts to popular 6-bolt manual transmissions from Eaton/Fuller, Hino, Volvo/Mack, and other manufacturers. Shift is wire/cable mechanical. The output shaft is a 1-1/4" round design, also available with keyway. Intermittent torque capacity for the 660 Series reaches 375 lb-ft (508 Nm); verify your specific application rating on Chelsea's application pages. Shaft power output runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. The cast iron housing with tapered cone bearings on the output shaft and one-piece gears contribute to the series' load-bearing durability. Common applications include dump trucks, aerial devices, service trucks, and snow and ice removal equipment. Call us to confirm proper fit for your transmission and chassis.
The Chelsea 660 Series fits a wide range of vocational markets including aerial, construction, dump truck, and municipal equipment applications. The 660 Series offers twenty-six output options and four internal speed ratios. The space-saving shift cover is designed to maximize clearance under the truck. Tapered bearings on the input shaft provide greater load-bearing capability compared to needle-bearing designs. Applicable Parker Chelsea documents include the 660 Series Parts List (HY25-2660-M1_US), 660 Series Sales Literature, and the Chelsea Power Take-Off General Information Catalog.
Features
6-bolt mounting compatible with Eaton/Fuller, Hino, Volvo/Mack, and other manual transmissions
Wire/cable mechanical shift type
Intermittent torque up to 375 lb-ft (508 Nm) - verify rating on Chelsea application pages for your specific installation
Output shaft: 1-1/4" round, with keyway option
Shaft power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
One-piece gears, cast iron bearing caps, and greaseable shaft options
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (301-400 lb-ft range; verify actual rating on Chelsea application pages)
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Transmission Compatibility: Eaton/Fuller, Hino, Volvo/Mack, Other
- Output Shaft Type: 1-1/4" Round; 1-1/4" Round with key
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP (500 RPM), 71 HP (1000 RPM), 107 HP (1500 RPM); 27 kW (500 RPM), 53 kW (1000 RPM), 80 kW (1500 RPM)
- Dimensions (H x W x L): 8.38" x 10.38" x 14.25"
Additional Information
The Chelsea 660 Series fits a wide range of vocational markets including aerial, construction, dump truck, and municipal equipment applications. The 660 Series offers twenty-six output options and four internal speed ratios. The space-saving shift cover is designed to maximize clearance under the truck. Tapered bearings on the input shaft provide greater load-bearing capability compared to needle-bearing designs. Applicable Parker Chelsea documents include the 660 Series Parts List (HY25-2660-M1_US), 660 Series Sales Literature, and the Chelsea Power Take-Off General Information Catalog.
