The Chelsea 680QQMEX-66RF is an 8-bolt Power Take-Off from the Chelsea 680 Series, a medium- to heavy-duty PTO designed for Eaton/Fuller manual transmissions and compatible with Volvo/Mack, Daimler/Detroit, and other transmission manufacturers. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft for long service life under high-torque demand. Output options include SAE A and SAE B pump flanges, ISO 7652 pump flange, and driveline configurations. The series supports wire/cable or mechanical shift actuation and is rated for intermittent torque of 301-400 lb-ft with continuous operation available at a 30% de-rating. Common vocational applications include aerial equipment, dump trucks, refuse vehicles, blower and product pump systems, and fire and rescue.
Features
8-bolt mounting for most manual transmission apertures
Cast iron housing with tapered cone bearings on the output shaft
Series intermittent torque rating: 301-400 lb-ft (check application pages for actual rating)
Output options: SAE A, SAE B, ISO 7652 pump flange, and driveline
Shift type: wire/cable or mechanical
Compatible transmission manufacturers: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and others
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Series Intermittent Torque: 301-400 lb-ft (508 Nm) - check application pages for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Housing Material: Cast Iron
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
