The Chelsea 660XFAHP-M3RA or 660XFAHPM3RA is a 660 Series Power Take-Off assembly built for medium- to heavy-duty vocational applications. It mounts via a 6-bolt pattern and uses wire/cable mechanical shifting. The output shaft is a 1-1/4" round configuration, with a keyed option available. Intermittent torque capacity for the 660 Series reaches 375 lb-ft (508 Nm); confirm actual ratings for your specific application on the Chelsea application pages. Shaft power output scales from 36 HP at 500 RPM to 71 HP at 1,000 RPM and 107 HP at 1,500 RPM. Compatible transmission manufacturers include Eaton/Fuller, Hino, Volvo/Mack, and others. Common uses include dump trucks, aerial devices, service trucks, and snow and ice removal equipment. A genuine Chelsea part, available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 660 Series uses tapered cone bearings on the output shaft and tapered bearings on the input shaft - replacing the needle bearings found on lighter-duty series - for greater load-bearing capability under sustained vocational use. The 660 Series supports continuous operation with a 30% torque de-rating applied. Twenty-six output configurations are available across the 660 Series, including Chelsea's 360-degree rotatable flange for optimal pump positioning. Four internal speed ratios and ten shift options provide broad application flexibility. Typical markets include aerial, construction equipment, vocational and municipal equipment, and other mobile applications. Common equipment types served: blower and product pumps, aerial devices, dump trucks and trailers, service trucks, and snow and ice removal systems.
Features
6-Bolt mounting pattern fits most popular manual transmissions from Eaton/Fuller, Hino, Volvo/Mack, and others
Wire/cable mechanical shift type
1-1/4" round output shaft (keyed option available)
Intermittent torque capacity up to 375 lb-ft (508 Nm) - check application pages for actual ratings
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
One-piece gears, cast iron bearing caps, and greaseable shaft options for extended service life
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (check Chelsea application pages for actual ratings for your application)
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round; 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
- Compatible Transmission Manufacturers: Eaton/Fuller, Hino, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 660 Series uses tapered cone bearings on the output shaft and tapered bearings on the input shaft - replacing the needle bearings found on lighter-duty series - for greater load-bearing capability under sustained vocational use. The 660 Series supports continuous operation with a 30% torque de-rating applied. Twenty-six output configurations are available across the 660 Series, including Chelsea's 360-degree rotatable flange for optimal pump positioning. Four internal speed ratios and ten shift options provide broad application flexibility. Typical markets include aerial, construction equipment, vocational and municipal equipment, and other mobile applications. Common equipment types served: blower and product pumps, aerial devices, dump trucks and trailers, service trucks, and snow and ice removal systems.
