The Chelsea 680 Series Power Take-Off, part number 680ZRAHX-A3GZ or 680ZRAHXA3GZ, is a medium- to heavy-duty PTO built for manual transmissions with an 8-bolt PTO aperture. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for high torque capacity. The series covers Eaton Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmission applications, with a deep-mount housing option suited to Mack installations. Typical vocational uses include dump trucks, pneumatic blowers, aerial equipment, refuse vehicles, fire and rescue, and snow and ice removal. The series intermittent torque rating reaches 375 lb-ft (508 Nm); continuous operation is supported with a 30% de-rating. Call us to confirm proper fit for your specific transmission and application.
Features
8-bolt mounting pattern for broad manual transmission coverage including Eaton Fuller and Volvo/Mack
Cast iron housing with tapered cone bearings on the output shaft
Intermittent torque rating: 375 lb-ft (508 Nm); continuous operation with 30% de-rating
Deep-mount housing option available for Mack transmission applications
Designed for higher-torque equipment such as pneumatic blowers, aerial units, and refuse vehicles
Shift types supported across the 680 Series: wire/cable and mechanical
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Applications: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Intermittent Torque: 375 lb-ft (508 Nm) - Check application pages for actual torque ratings
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP (42+ kW)
- Shaft Power: 36 HP at 500 RPM / 71 HP at 1000 RPM / 107 HP at 1500 RPM
- Housing Material: Cast Iron
- Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Part Number: 680ZRAHX-A3GZ or 680ZRAHXA3GZ
Additional Information
The Chelsea 680 Series is covered in Parker's 680 Series Parts List (HY25-2660-M1_US) and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual. A Detroit DT12 Adapter Owner's Manual is also available for 680 Series installations. Vocational applications for this series include aerial equipment, dump trucks, refuse vehicles, fire and rescue, service trucks, snow and ice removal, and blower/product pump systems.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
