The Chelsea 660XRAHX-V3XD or 660XRAHXV3XD is a 660 Series Power Take-Off assembly built for medium- to heavy-duty vocational applications. It mounts via a 6-bolt pattern and shifts by wire/cable mechanical actuation. The output shaft is a 1-1/4" round with key. Intermittent torque capacity for the 660 Series reaches 375 lb-ft (508 Nm); verify your specific application rating on the Chelsea application pages. Shaft power output climbs from 36 HP at 500 RPM to 71 HP at 1000 RPM and 107 HP at 1500 RPM. Compatible transmissions include Eaton/Fuller, Hino, Volvo/Mack, and others. Common uses include dump trucks, aerial devices, service trucks, and snow removal equipment. Call us to confirm proper fit for your application.

The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications including blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal. The 660 Series features cast iron housing and tapered cone bearings on the output shaft for durability under demanding loads. Strong tapered bearings on the input shaft provide greater load-bearing capability compared to needle bearing designs. Twenty-six output options and four internal speed ratios make the 660 Series adaptable across a wide range of hydraulic and driveline setups.
Features
6-bolt mounting pattern fits most popular manual transmissions from Eaton/Fuller, Hino, and Volvo/Mack
Wire/cable mechanical shift actuation
1-1/4" round output shaft with key
Intermittent torque capacity up to 375 lb-ft (508 Nm) at the series level - check application pages for this configuration
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
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round with Key
- Transmission Compatibility: Eaton/Fuller, Hino, Volvo/Mack, Other
- 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
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications including blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal. The 660 Series features cast iron housing and tapered cone bearings on the output shaft for durability under demanding loads. Strong tapered bearings on the input shaft provide greater load-bearing capability compared to needle bearing designs. Twenty-six output options and four internal speed ratios make the 660 Series adaptable across a wide range of hydraulic and driveline setups.
Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
