The Chelsea 660GRAHX-A5XD or 660GRAHXA5XD is a 660 Series Power Take-Off built for medium- to heavy-duty vocational applications. It mounts to 6-bolt manual transmissions from Eaton/Fuller, Volvo/Mack, Hino, and other compatible manufacturers. Shift is wire/cable mechanical. The output shaft is a 1-1/4" round with keyway, and the series delivers intermittent torque up to 375 lb-ft (508 Nm). Shaft power output runs 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Cast iron bearing caps and one-piece gears handle demanding duty cycles across applications like dump trucks, aerial devices, service trucks, and snow removal equipment. Call us to confirm proper fit for your transmission and output configuration.
Features
6-bolt mounting fits popular manual transmissions from Eaton/Fuller, Volvo/Mack, Hino, and others
Wire/cable mechanical shift type
Intermittent torque rating up to 375 lb-ft (508 Nm) - check application pages for actual ratings
1-1/4" round output shaft with keyway
One-piece gears designed for higher torque capacity
Cast iron bearing caps with greaseable shaft options
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Hino, Other
- Output Shaft Type: 1-1/4" Round, 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)
Additional Information
Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
