The Chelsea 680 Series Power Take-Off, part number 680XQAHX-A3RB or 680XQAHXA3RB, is a cast-iron medium-to-heavy-duty PTO engineered for 8-bolt transmission openings. It uses a wire/cable mechanical shift and delivers a 1-1/4" round output shaft with key. Intermittent torque rating reaches 375 lb-ft (508 Nm) - check application pages for actual torque ratings on your specific setup. Shaft power runs 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. The deep-mount housing option supports Mack transmission applications, and the design targets higher-torque demands such as pneumatic blowers. Compatible with Eaton/Fuller, Volvo/Mack, and other transmission manufacturers. A genuine Chelsea part available from Pro Gear and Transmission - call us to confirm proper fit for your application.
Features
8-bolt mounting for broad manual transmission coverage, including Eaton/Fuller and Volvo/Mack
Deep-mount housing option available for Mack transmission applications
Wire/cable mechanical shift type
1-1/4" round output shaft with key
Intermittent torque up to 375 lb-ft (508 Nm) - verify rating on application pages for your specific unit
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
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 Manufacturer: Eaton/Fuller, Volvo/Mack, Other
- Output Shaft Type: 1-1/4" Round with Key
- Mounting Type: 8-Bolt
- 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
