The Chelsea 680ZFDAX-A3XD or 680ZFDAXA3XD is a power take-off from Chelsea's 680 Series, built for medium- to heavy-duty manual transmission applications with an 8-bolt PTO aperture. The 680 Series uses a cast iron housing with tapered cone bearings on the output shaft for durability in high-torque service. The series is engineered for demanding work such as pneumatic blowers and carries an intermittent torque rating of 375 lb-ft (508 Nm). Coverage includes Eaton Fuller, Mack, and other compatible transmissions. The space-saving air shift cover design maximizes clearance under the truck. Call us to confirm proper fit for your application.
Features
Chelsea 680 Series power take-off, part 680ZFDAX-A3XD or 680ZFDAXA3XD
8-bolt mounting for most manual transmission applications with 8-bolt PTO aperture
Cast iron housing with tapered cone bearings on output shaft for high-torque capability
Intermittent torque rating: 375 lb-ft (508 Nm) series-level; check application pages for unit-specific rating
Continuous operation supported with 30% de-rating
Compatible transmission manufacturers include Eaton Fuller, Volvo/Mack, and Daimler/Detroit
Tech Specs
- Mounting Type: 8-Bolt
- Series: Chelsea 680 Series
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Shift Type: Wire/Cable or Mechanical (series)
- Output Power: 56+ HP (42+ kW) series-level
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM (series-level)
- Intermittent Torque: 375 lb-ft / 508 Nm (check application pages for this unit)
- Continuous Operation: Yes, with 30% de-rating
- Housing Material: Cast iron
- Output Types Available (series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubricant Type: X = No Pressure Lube (per part number decode)
Additional Information
The Chelsea 680 Series is suited for aerial, dump truck, fire and rescue, refuse, snow and ice removal, service truck, and blower and product pump applications. Deep mount housing options are available for Mack transmission fitments. The series offers 32 output options including Chelsea's 360-degree rotatable flange, four internal speed ratios, and ten shift options. Reference documents include the 680 Series Parts List (HY25-2660-M1_US) and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, available from Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
