The Chelsea 680 Series Power Take-Off Assembly, part number 680ZFDAX-V3RB or 680ZFDAXV3RB, is a medium- to heavy-duty PTO built for 8-bolt transmission apertures on Eaton/Fuller, Volvo/Mack, and other compatible transmissions. It features a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability under demanding duty cycles. Shift type is wire/cable mechanical. The 1-1/4" round output shaft (with key) delivers intermittent torque rated at 375 lb-ft (508 Nm), confirm actual ratings against the Chelsea 680 application pages for your specific setup. Shaft power output reaches 71 HP at 1,000 RPM and 107 HP at 1,500 RPM. The deep-mount housing option makes this unit particularly suited for Mack transmission installations, and it was engineered for high-torque demands such as pneumatic blowers. Call us to confirm proper fit for your application.
Features
8-bolt mounting type fits most manual transmissions with an 8-bolt PTO aperture
Wire/cable mechanical shift; space-saving air shift cover design
Intermittent torque: 375 lb-ft (508 Nm), verify actual rating on Chelsea 680 application pages
Output shaft: 1-1/4" round with key
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
Deep-mount housing option suited for Mack transmission applications; engineered for high-torque use including pneumatic blowers
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round with Key
- Intermittent Torque: 375 lb-ft / 508 Nm (Check Chelsea 680 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)
- Compatible Transmission Manufacturers: Eaton/Fuller, Volvo/Mack, Other
- 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.
