The Chelsea 680DFMCX-56XD or 680DFMCX56XD is an 8-bolt Power Take-Off from the Chelsea 680 Series, engineered for medium- to heavy-duty manual transmission applications. The 680 Series uses a cast iron housing with tapered cone bearings on the output shaft for long service life under demanding loads. This series is designed for higher-torque work such as pneumatic blowers, and includes a space-saving air shift cover for clearance under the truck. Shift type for the 680 Series includes wire/cable and mechanical options. The 680 Series also offers a deep-mount housing option suited to Mack transmission applications, and covers transmissions with an 8-bolt PTO aperture including Eaton Fuller and Volvo/Mack. Call us to confirm proper fit for your specific transmission and application.
Features
Chelsea 680 Series Power Take-Off, part number 680DFMCX-56XD or 680DFMCX56XD
8-bolt mounting for coverage across a wide range of manual transmission applications
Cast iron housing with tapered cone bearings on the output shaft
Deep-mount housing option available for Mack transmission applications
Designed for higher-torque applications including pneumatic blowers
Space-saving air shift cover provides maximum clearance under the truck
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Output Power (Series): 56+ HP / 51+ kW
- Shaft Power (Series): 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Intermittent Torque (Series): 301-400 lb-ft (check application pages for actual torque rating)
- Continuous Operation: Yes, with 30% de-rating
- Lubricant: No Pressure Lube (X designation)
- Output Options (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Housing Material: Cast Iron
Additional Information
The Chelsea 680 Series is suited for vocational and municipal work including aerial, dump truck, refuse, snow and ice removal, fire and rescue, service trucks, and blower and product pump applications. The series features four internal speed ratios and ten shift options across thirty-two output configurations, including Chelsea's 360-degree rotatable flange for flexible pump fitment. Pro Gear and Transmission sells this genuine Chelsea part. Call us to confirm the correct fit for your transmission and equipment.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
