The Chelsea 680 Series Power Take-Off, part number 680ZSDAX-A3XD or 680ZSDAXA3XD, is a medium- to heavy-duty 8-bolt mount PTO built for higher-torque applications including pneumatic blowers, aerial equipment, dump trucks, and refuse vehicles. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for extended service life. The input shaft also uses tapered bearings rather than needle bearings for greater load-bearing capability. Coverage spans Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmissions with 8-bolt PTO apertures, including a deep-mount housing option for Mack applications. The space-saving air shift cover maximizes clearance under the truck. Contact Pro Gear and Transmission to confirm fit for your specific transmission.
Features
8-bolt mounting pattern fits most manual transmissions with 8-bolt PTO apertures
Cast iron housing with tapered cone bearings on the output shaft
Input shaft uses tapered bearings for greater load-bearing capability versus needle bearings
Deep-mount housing option available for Mack transmission applications
Space-saving air shift cover for maximum clearance under the truck
Compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmissions
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Intermittent Torque Rating: 301-400 lb-ft (series rating; verify actual rating for this application)
- Continuous Operation: Yes, with 30% de-rating
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other 8-bolt aperture manual transmissions
- Housing Material: Cast iron
- Bearing Type: Tapered cone bearings (output shaft and input shaft)
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
The Chelsea 680 Series is suited for vocational applications including aerial equipment, snow and ice removal, fire and rescue, dump trucks, service trucks, refuse vehicles, and blower and product pump systems. The series offers 32 output options and four internal speed ratios. Chelsea's 360-degree rotatable flange is available within the series for flexible pump fitment. Reference documents for this series include the 680 Series Parts List (HY25-2660-M1_US), the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, and the Chelsea Power Take-Off General Information Catalog, available through Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
