The Chelsea 680QQMEX-66AF is an 8-bolt Power Take-Off from the Chelsea 680 Series, designed for medium to heavy-duty manual transmission applications including Eaton Fuller and Mack platforms. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for high torque capacity. Output options include SAE A and SAE B pump flanges as well as driveline configurations, and the series supports up to 375 lb-ft of intermittent torque. The space-saving air shift cover maximizes clearance under the truck. Wire/cable and mechanical shift types are available within this series. Pro Gear and Transmission supplies genuine Chelsea PTO units for vocational, aerial, and municipal applications.
Features
8-bolt mounting for Eaton Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmissions
Cast iron housing with tapered cone bearings on the output shaft
Intermittent torque rating up to 375 lb-ft (508 Nm) - check application pages for actual rating
Output options include SAE A pump flange, SAE B pump flange, and driveline configurations
Wire/cable and mechanical shift types supported
Deep mount housing option available for Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Intermittent Torque: Up to 375 lb-ft (508 Nm) - see application pages for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP (42+ kW)
- Housing Material: Cast Iron
- Bearings: Tapered cone bearings on output shaft
Additional Information
The Chelsea 680 Series is suited for higher torque vocational applications including pneumatic blowers, dump trucks, aerial equipment, fire and rescue vehicles, refuse trucks, and snow and ice removal. The 360-degree rotatable flange option within the 680 Series provides flexible pump positioning. Four internal speed ratios and ten shift options are available across the series. Part number 680QQMEX-66AF is also referenced as SP680QQMEX-66AF. Relevant Chelsea documentation includes 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 through Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
