The Chelsea 660GHAHX-A3RB or 660GHAHXA3RB is a 660 Series Power Take-Off built for medium- to heavy-duty vocational applications. It mounts via a 6-bolt pattern and fits manual transmissions from Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. The wire/cable mechanical shift keeps the engagement simple and reliable. Output shaft is a 1-1/4" round, also available with a 5/16" keyway. The 660 Series carries an intermittent torque rating up to 375 lb-ft (508 Nm), with shaft power outputs of 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Tapered cone bearings on the output shaft and cast iron bearing caps contribute to long service life. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 660 Series is suited for aerial devices, dump trucks, service trucks, snow and ice removal equipment, and blower and product pump applications. Twenty-six output options and four internal speed ratios make this a versatile platform across vocational and municipal fleets. The space-saving shift cover is designed for maximum clearance under the truck.
Features
6-bolt mounting pattern fits popular manual transmissions from Eaton/Fuller, Volvo/Mack, Hino, and others
Wire/cable mechanical shift engagement
1-1/4" round output shaft (with key option available)
Intermittent torque capacity up to 375 lb-ft (508 Nm) for demanding vocational use
One-piece gears for higher torque capacity
Cast iron bearing caps with 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: Up to 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 1,000 RPM; 107 HP / 80 kW at 1,500 RPM
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Hino, Other 6-bolt manual transmissions
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 660 Series is suited for aerial devices, dump trucks, service trucks, snow and ice removal equipment, and blower and product pump applications. Twenty-six output options and four internal speed ratios make this a versatile platform across vocational and municipal fleets. The space-saving shift cover is designed for maximum clearance under the truck.
Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
