The Chelsea 660 Series Power Take-Off, part number 660XQAHX-A3XV or 660XQAHXA3XV, is a 6-bolt mounted PTO built for medium to heavy duty vocational applications. It uses a wire/cable mechanical shift and features a 1-1/4" round output shaft with keyway. The 660 Series delivers intermittent torque up to 375 lb-ft (508 Nm), with output power rated at 56+ HP. Shaft power at rated speeds: 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and other select manual gearboxes. One-piece gears and cast iron bearing caps contribute to the series' load capacity and service life. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 660 Series is suited for demanding vocational markets including aerial, construction, dump trucks and trailers, snow and ice removal, and service trucks. Twenty-six output options and four internal speed ratios make this a versatile platform. The 660 Series features tapered cone bearings on the output shaft and tapered bearings on the input shaft for greater load-bearing capability compared to needle-bearing designs. The space-saving shift cover is designed for maximum clearance under the truck.
Features
6-Bolt mounting, compatible with Eaton/Fuller, Volvo/Mack, Hino, and other select manual transmissions
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque capacity up to 375 lb-ft (508 Nm); check application pages for actual torque ratings
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
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round, 1-1/4" Round with Key
- Intermittent Torque: 375 lb-ft / 508 Nm (Check Application Pages for Actual Torque Ratings)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP / 27 kW at 500 RPM; 71 HP / 53 kW at 1000 RPM; 107 HP / 80 kW at 1500 RPM
- Transmission Manufacturer Compatibility: Eaton/Fuller, Hino, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 660 Series is suited for demanding vocational markets including aerial, construction, dump trucks and trailers, snow and ice removal, and service trucks. Twenty-six output options and four internal speed ratios make this a versatile platform. The 660 Series features tapered cone bearings on the output shaft and tapered bearings on the input shaft for greater load-bearing capability compared to needle-bearing designs. The space-saving shift cover is designed for maximum clearance under the truck.
