Description
The Chelsea 680 Series Power Take-Off Assembly, part number 680XQAHX-A3AF or 680XQAHXA3AF, is a medium- to heavy-duty PTO built around an 8-bolt mounting configuration. Wire/cable mechanical shift operates the unit, which delivers 56+ HP output power and intermittent torque rated at 375 lb-ft (508 Nm) — verify your application on Chelsea’s application pages for confirmed torque values. The output shaft is a 1-1/4″ round design with keyway. Shaft power at 1,000 RPM is 71 HP (53 kW). The 680 Series features a cast iron housing with tapered cone bearings on the output shaft, making it well suited for pneumatic blower and other higher-torque vocational work. A deep mount housing option is available for Mack transmission applications, and the unit is compatible with Eaton/Fuller, Volvo/Mack, and other 8-bolt transmission openings. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
8-bolt mounting for broad coverage across Eaton/Fuller, Volvo/Mack, and other compatible transmissions
Wire/cable mechanical shift type
1-1/4″ round output shaft with keyway
Intermittent torque up to 375 lb-ft (508 Nm) — check Chelsea application pages for confirmed ratings
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
Deep mount housing option available for Mack transmission applications
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (check Chelsea application pages for confirmed ratings)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP / 51+ kW
- Output Shaft Type: 1-1/4″ Round with Key
- Mounting Type: 8-Bolt
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, Other 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)
