Description
The Chelsea 680DFMAX-56XY (also listed as 680DFMAX56XY) is an 8-bolt power take-off assembly engineered for higher-torque demands such as pneumatic blower applications. It uses wire/cable mechanical shifting and delivers an intermittent torque rating up to 375 lb-ft (508 Nm); verify actual torque against the Chelsea application pages for your specific installation. Output shaft is a 1-1/4″ round, also available with key. Shaft power output reaches 107 HP at 1,500 RPM. Compatible with Eaton/Fuller, Volvo/Mack, and other 8-bolt transmission openings, including a deep-mount housing option designed for Mack transmission applications. Call us to confirm proper fit for your application.
Features
8-bolt mounting for broad transmission compatibility including Eaton/Fuller, Volvo/Mack, and other makes
Wire/cable mechanical shift type
Intermittent torque rating: 375 lb-ft (508 Nm) – confirm actual rating via Chelsea application pages
Output shaft: 1-1/4″ round, with keyed variant available
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
Deep-mount housing option for Mack transmission applications; suited for pneumatic blower drives
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 Compatibility: Eaton/Fuller, Volvo/Mack, Other 8-Bolt
- Output Shaft Type: 1-1/4″ Round; 1-1/4″ Round with Key
- Mounting Type: 8-Bolt
- Shaft Power: 500 RPM: 36 HP (27 kW) | 1,000 RPM: 71 HP (53 kW) | 1,500 RPM: 107 HP (80 kW)
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
