The Chelsea 680QHMEX-56RK is an 8-bolt Power Take-Off from the Chelsea 680 Series, a medium- to heavy-duty PTO line built around a cast iron housing with tapered cone bearings on the output shaft. The 680 Series covers most manual transmission applications with an 8-bolt PTO aperture, including Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmission manufacturers. Output options in the 680 Series include SAE A pump flange, SAE B pump flange, ISO 7652 pump flange, and driveline configurations. Shift types available across the series are wire/cable and mechanical. A genuine Chelsea part, sold by 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 higher torque capability
SAE A, SAE B, and ISO 7652 pump flange output options available in the 680 Series
Wire/cable and mechanical shift types
Designed for higher-torque vocational applications including pneumatic blowers, aerial, dump, and refuse
Deep mount housing option available for Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Shift Type: Wire/Cable, Mechanical
- Housing Material: Cast Iron
- Series Intermittent Torque Rating: 301-400 lb-ft (check application pages for actual rating)
- Series Output Power: 56+ HP / 51+ kW
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 680 Series is compatible with a wide range of vocational and municipal applications, including aerial equipment, snow and ice removal, fire and rescue, dump trucks and trailers, service trucks, refuse vehicles, and blower and product pumps. The series features 32 output options and four internal speed ratios. Chelsea's 360-degree rotatable flange option provides additional flexibility for pump mounting. The space-saving air shift cover is designed to maximize clearance under the truck. The input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
