The Chelsea 680GQAHX-A3GF is an 8-bolt Power Take-Off from the Chelsea 680 Series, engineered for medium- to heavy-duty manual transmission applications including Eaton Fuller, Volvo/Mack, and Daimler/Detroit gearboxes. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for extended service life under high-torque loads. This series is built for demanding applications such as pneumatic blowers, dump trucks, aerial units, refuse vehicles, and fire and rescue equipment. The space-saving air shift cover maximizes clearance under the truck. Available output configurations include SAE A, SAE B, and ISO 7652 pump flanges as well as driveline outputs, with four internal speed ratios across the series. A genuine Chelsea part, available from Pro Gear and Transmission.
Features
8-bolt mounting for broad manual transmission coverage including Eaton Fuller, Volvo/Mack, and Daimler/Detroit
Cast iron housing with tapered cone bearings on the output shaft for high torque capacity
Air shift cover with space-saving design for maximum clearance under the truck
Series supports SAE A, SAE B, ISO 7652 pump flange, and driveline output configurations
Four internal speed ratios available across the 680 Series
Suited for pneumatic blowers, aerial, dump truck, refuse, fire and rescue, and snow/ice removal applications
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Shift Type: Wire/Cable or Mechanical (Air Shift cover option)
- Continuous Operation: Yes, with 30% de-rating
- Series Intermittent Torque: 301-400 lb-ft (501+ Nm); check application pages for actual torque rating
- Series Output Power: 56+ HP / 51+ kW
- Series Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing Material: Cast Iron
- Bearing Type: Tapered Cone Bearings (output shaft); Tapered Bearings (input shaft)
Additional Information
The Chelsea 680 Series is covered by the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual and the 680 Series Parts List (HY25-2660-M1_US). A deep mount housing option is available within the 680 Series for Mack transmission applications. The 680 Series also supports Chelsea's 360-degree rotatable flange output for flexible pump fitment positioning.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
