The Chelsea 660XHAHX-A5AZ or 660XHAHXA5AZ is a 660 Series Power Take-Off engineered for medium- to heavy-duty vocational work. It mounts to 6-bolt transmissions from Eaton/Fuller, Hino, Volvo/Mack, and other compatible manufacturers. Shift type is wire/cable mechanical. The output shaft is a 1-1/4" round with keyway. Intermittent torque capacity for the 660 Series reaches 375 lb-ft (508 Nm); check application pages for torque ratings specific to your installation. Shaft power output scales from 36 HP at 500 RPM to 71 HP at 1,000 RPM and 107 HP at 1,500 RPM. The 660 Series uses a cast iron housing with tapered cone bearings on both the output and input shafts. Call us to confirm proper fit for your transmission and application.

• Mounting Type: 6-Bolt
• Shift Type: Wire/Cable, Mechanical
• Output Shaft Type: 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 (500 RPM), 71 HP (1,000 RPM), 107 HP (1,500 RPM) / 27 kW (500 RPM), 53 kW (1,000 RPM), 80 kW (1,500 RPM)
• Transmission Manufacturer Compatibility: Eaton/Fuller, Hino, Volvo/Mack, Other
• Continuous Operation: Yes, with 30% de-rating

The Chelsea 660 Series is suited for aerial devices, dump trucks and trailers, service trucks, snow and ice removal equipment, and blower and product pump applications. Twenty-six output options are available across the 660 Series, including a 360-degree rotatable flange for optimal pump placement. Four internal speed ratios and ten shift options are offered at the series level. Compatible documents include the 660 Series Parts List (HY25-2660-M1_US) and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual available from Chelsea/Parker.