The Chelsea 660 Series Power Take-Off Assembly, part number 660ZQDAX-A3XY or 660ZQDAXA3XY, is a 6-bolt mounted PTO engineered for medium to heavy-duty vocational applications including dump trucks, aerial devices, service trucks, and snow and ice removal equipment. It uses a wire/cable mechanical shift and delivers an intermittent torque rating up to 375 lb-ft (508 Nm) for the 660 Series. The 1-1/4" round output shaft is compatible with transmissions from Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. Shaft power output runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. A genuine Chelsea part available from Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications. Markets served include aerial devices, blower and product pumps, dump trucks and trailers, service trucks, and snow and ice removal. The 660 Series supports continuous operation with a 30% de-rating. Output options for the series include SAE A, SAE B, and ISO 7652 pump flanges as well as driveline configurations, with four internal speed ratios and ten shift options available across the family. Consult the 660 Series Parts List (HY25-2660-M1_US) or the Chelsea PTO General Information Catalog for full configuration and application details.
Features
6-bolt mounting for compatibility with Eaton/Fuller, Volvo/Mack, Hino, and other popular manual transmissions
Wire/cable mechanical shift operation
Intermittent torque capacity up to 375 lb-ft (508 Nm) per 660 Series rating
1-1/4" round output shaft with keyway option
One-piece gears for higher torque capacity
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)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP / 51+ kW
- Transmission Compatibility: Eaton/Fuller, Hino, Volvo/Mack, and other 6-bolt manual transmissions
- Output Shaft Type: 1-1/4" Round; 1-1/4" Round with key
- Mounting Type: 6-Bolt
- Shaft Power: 36 HP (27 kW) at 500 RPM; 71 HP (53 kW) at 1000 RPM; 107 HP (80 kW) at 1500 RPM
Additional Information
The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications. Markets served include aerial devices, blower and product pumps, dump trucks and trailers, service trucks, and snow and ice removal. The 660 Series supports continuous operation with a 30% de-rating. Output options for the series include SAE A, SAE B, and ISO 7652 pump flanges as well as driveline configurations, with four internal speed ratios and ten shift options available across the family. Consult the 660 Series Parts List (HY25-2660-M1_US) or the Chelsea PTO General Information Catalog for full configuration and application details.
