The Chelsea 680QFMEX-66RY is an 8-bolt Power Take-Off from the Chelsea 680 Series, built for medium- to heavy-duty manual transmission applications on Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other platforms. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for extended service life under high-torque demand. Output options in the 680 family span SAE A, SAE B, and other pump flange configurations along with driveline outputs. The series supports intermittent torque ratings from 301 to 400 lb-ft, making it well suited for pneumatic blowers, dump bodies, aerial equipment, fire and rescue apparatus, and refuse vehicles. The space-saving air shift cover is designed for maximum undercab clearance. Available from Pro Gear and Transmission.
Features
8-bolt mounting for broad manual transmission coverage including Eaton/Fuller and Volvo/Mack platforms
Cast iron housing with tapered cone bearings on the output shaft for long service life
Series intermittent torque rating: 301 to 400 lb-ft (508 Nm range)
Deep mount housing option available for Mack transmission applications
Space-saving air shift cover for maximum undercab clearance
Suited for pneumatic blowers, aerial, dump, refuse, fire and rescue, and snow/ice applications
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility (Series): Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Output Type (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Intermittent Torque (Series): 301 to 400 lb-ft / 501+ Nm (375 lb-ft / 508 Nm reference; verify on application page)
- Continuous Operation: Yes, with 30% de-rating
- Shift Type (Series): Wire/Cable, Mechanical
- Output Power (Series): 56+ HP / 51+ kW
- Housing Material: Cast Iron
Additional Information
The Chelsea 680 Series is covered by the following Parker Chelsea reference documents: 680 Series Parts List (HY25-2660-M1_US), 680 Series Sales Literature, 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, and Chelsea PTO General Information Catalog. The Detroit DT12 Adapter Owner's Manual covers 680 Series fitment on Detroit DT12 applications. Additional ratio and output options are detailed in PTO-PNI-250 (New 660/680 Series Ratio and Output Options).Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
