The Chelsea 680 Series Power Take-Off Assembly, part number 680ZFDAX-A6RB or 680ZFDAXA6RB, is a medium- to heavy-duty PTO built for 8-bolt transmission apertures on Eaton/Fuller, Volvo/Mack, and other compatible transmissions. This unit uses wire/cable mechanical shift and delivers an intermittent torque rating up to 375 lb-ft (508 Nm) - check Chelsea application pages for confirmed ratings for your specific installation. The 1-1/4" round output shaft with key suits direct-drive accessories, and the deep-mount housing option accommodates Mack transmission applications. Shaft power output reaches 71 HP at 1,000 RPM and 107 HP at 1,500 RPM. Common applications include pneumatic blowers, dump trucks, refuse, and aerial equipment. Call us to confirm proper fit for your application.
Features
8-bolt mounting for broad Eaton/Fuller, Volvo/Mack, and other manual transmission coverage
Wire/cable mechanical shift type
1-1/4" round output shaft with key
Intermittent torque rating up to 375 lb-ft (508 Nm) - verify on Chelsea 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
Deep-mount housing option available for Mack transmission applications
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
- Output Shaft Type: 1-1/4" Round with Key
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other
- 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)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
