The Chelsea 680 Series Power Take-Off, part number 680XFAHX-A5XR or 680XFAHXA5XR, is a medium- to heavy-duty PTO built for manual transmissions with an 8-bolt aperture. The 680 Series features a cast iron housing with tapered cone bearings on both the output shaft and input shaft, replacing the needle bearings used in lighter-duty designs for greater load-bearing capability. The series is engineered for higher-torque applications including pneumatic blowers, aerial equipment, dump trucks, and refuse vehicles. A deep-mount housing option makes it compatible with Mack transmission applications, and the space-saving air shift cover maximizes clearance under the truck. Output options across the 680 Series include SAE A, SAE B, and other pump flange configurations, with four internal speed ratios available. Call us to confirm proper fit for your specific transmission and application.
Features
8-bolt mounting fits most manual transmission apertures including Eaton/Fuller and Mack
Cast iron housing with tapered cone bearings on output and input shafts for greater load capacity
Designed for high-torque applications such as pneumatic blowers, aerial equipment, and refuse trucks
Deep-mount housing option available for Mack transmission compatibility
Space-saving air shift cover for maximum clearance under the truck
Intermittent torque rating up to 375 lb-ft (508 Nm) across the 680 Series (verify actual rating for this configuration)
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Housing Material: Cast Iron
- Bearing Type: Tapered Cone (output shaft and input shaft)
- Shift Type: Wire/Cable or Mechanical
- Output Options (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Intermittent Torque (Series): 375 lb-ft / 508 Nm (check application pages for actual torque rating)
- Continuous Operation: Yes, with 30% de-rating
- Output Power (Series): 56+ HP / 51+ kW
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
Parts manual and diagrams: Chelsea 680 Series PTO parts list with prices
