Chelsea 680 Series Power Take-Off Assembly, part number 680XFAHX-M3XY or 680XFAHXM3XY, is built for medium- to heavy-duty 8-bolt transmission applications. The 680 Series uses a cast iron housing with tapered cone bearings on the output shaft for high torque capacity. This unit shifts via wire/cable mechanical actuation and mounts to 8-bolt PTO apertures found on Eaton/Fuller and Volvo/Mack transmissions, with a deep-mount housing option suited to Mack applications. Output shaft is 1-1/4" round with keyway. Intermittent torque rating for the 680 Series runs up to 375 lb-ft (508 Nm) -- check application pages for confirmed ratings on your specific setup. Shaft power output reaches 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. Designed for higher-torque vocational work including pneumatic blowers, dump bodies, and aerial equipment. Call us to confirm proper fit for your transmission.
Features
Chelsea 680 Series PTO, part number 680XFAHX-M3XY or 680XFAHXM3XY
8-bolt mounting type fits most manual transmissions with 8-bolt PTO apertures
Wire/cable mechanical shift actuation
1-1/4" round output shaft with keyway
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 1000 RPM, 107 HP at 1500 RPM
Deep-mount housing option available for Mack transmission applications
Suited for high-torque vocational duty including pneumatic blowers, aerial, dump, refuse, and fire/rescue
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- 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)
- Transmission Compatibility: 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.
