The Chelsea 680XSAHX-A5RK 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 transmissions. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft and tapered bearings on the input shaft for strong load bearing capability. The series supports intermittent torque ratings from 301 to 400 lb-ft (501+ Nm) and continuous operation with a 30% de-rating. Output options include SAE A and SAE B pump flanges and driveline configurations. The space-saving air shift cover maximizes clearance under the truck, making this a practical choice for vocational applications such as aerial, dump truck, refuse, and blower service.
Features
8-bolt mounting configuration for broad manual transmission coverage, including Eaton Fuller and Mack
Air shift actuation with space-saving cover for maximum undercab clearance
Cast iron housing with tapered cone bearings on the output shaft for high torque capacity
Tapered input shaft bearings for greater load bearing capability over needle bearing designs
Intermittent torque rating: 301-400 lb-ft (501+ Nm); continuous operation supported with 30% de-rating
Output options include SAE A pump flange, SAE B pump flange, and driveline configurations
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Air Shift
- Output Type: SAE A Pump Flange, SAE B Pump Flange, Driveline
- Intermittent Torque: 301-400 lb-ft / 501+ Nm (check application pages for actual torque ratings)
- Continuous Operation: Yes, with 30% de-rating
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing Material: Cast Iron
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Mounting Aperture: 8-Bolt PTO Opening
Additional Information
The Chelsea 680 Series is documented in the 680 Series Owner's Manual and 680 Series Parts List (HY25-2660-M1_US). A deep mount housing option is available within the 680 Series for Mack transmission applications. Typical vocational uses for this series include aerial lifts, snow and ice removal, fire and rescue, dump trucks, service trucks, refuse vehicles, and blower and product pump systems. The 680 Series offers 32 output options and four internal speed ratios across the product line.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
