The Chelsea 660 Series Power Take-Off Assembly, part number 660XQAHX-A3XK or 660XQAHXA3XK, fits most popular manual 6-bolt transmissions from Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. This PTO delivers an intermittent torque capacity up to 375 lb-ft (508 Nm) and output power of 56+ HP (51+ kW), with shaft power rated at 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. The output shaft is a 1-1/4" round configuration with keyway. Shift is accomplished via wire/cable mechanical actuation. Built around a cast iron housing with tapered cone bearings on the output shaft and tapered bearings on the input shaft, the 660 Series is suited for demanding vocational applications including dump trucks, aerial devices, service trucks, and snow and ice removal equipment. Call us to confirm proper fit for your application.
The Chelsea 660 Series is designed for medium to heavy duty vocational applications including aerial devices, dump trucks, service trucks, blower and product pumps, and snow and ice removal equipment. Four internal speed ratios and ten shift options are available across the 660 Series, with 26 output configurations including Chelsea's 360-degree rotatable flange for optimal pump positioning. The space-saving shift cover design maximizes clearance under the truck. Tapered bearings on both the input and output shafts provide greater load-bearing capability compared to needle-bearing designs.
Features
6-bolt mounting fits most popular manual transmissions from Eaton/Fuller, Volvo/Mack, Hino, and others
Wire/cable mechanical shift actuation
Intermittent torque capacity up to 375 lb-ft (508 Nm); continuous operation supported with 30% de-rating
Output shaft: 1-1/4" round with keyway
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 for extended service life
Tech Specs
- Intermittent Torque: 375 lb-ft (508 Nm) - Check Application Pages for Actual Torque Ratings
- Torque Range: 301-400 lb-ft (501+ Nm)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP (51+ kW)
- Transmission Manufacturer: Eaton/Fuller, Hino, Volvo/Mack, Other
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with Key
- 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)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 660 Series is designed for medium to heavy duty vocational applications including aerial devices, dump trucks, service trucks, blower and product pumps, and snow and ice removal equipment. Four internal speed ratios and ten shift options are available across the 660 Series, with 26 output configurations including Chelsea's 360-degree rotatable flange for optimal pump positioning. The space-saving shift cover design maximizes clearance under the truck. Tapered bearings on both the input and output shafts provide greater load-bearing capability compared to needle-bearing designs.
