The Chelsea 680DFMAX-56XD or 680DFMAX56XD is a power take-off assembly built for higher-torque applications including pneumatic blowers. It mounts via an 8-bolt opening and shifts by wire/cable mechanical control. Output reaches 56+ HP (51+ kW), with shaft power ratings of 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Intermittent torque is rated up to 375 lb-ft (508 Nm); consult application pages for actual torque ratings for your specific installation. The 1-1/4" round output shaft is also available with a keyway. The deep-mount housing option makes this unit well suited to Mack transmission applications. Compatible transmissions include Volvo/Mack and Eaton/Fuller platforms. Call us to confirm proper fit for your application.
Features
8-bolt mounting for broad transmission compatibility, including Volvo/Mack and Eaton/Fuller
Wire/cable mechanical shift type
Output power: 56+ HP (51+ kW); shaft power 36/71/107 HP at 500/1,000/1,500 RPM
Intermittent torque up to 375 lb-ft (508 Nm) - check application pages for actual rating
1-1/4" round output shaft, also available with keyway
Deep-mount housing option designed for Mack transmission applications; suited to pneumatic blower service
Tech Specs
- Intermittent Torque: Up to 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: Volvo/Mack, Eaton/Fuller, Other 8-bolt applications
- 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.
