The Chelsea 680XSAHX-A3RJ is an 8-bolt Power Take-Off from the Chelsea 680 Series, engineered for medium- to heavy-duty manual transmission applications including Eaton Fuller, Volvo/Mack, and Daimler/Detroit platforms. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft and tapered input shaft bearings for strong load-bearing capability. The series delivers up to 375 lb-ft intermittent torque (508 Nm) and supports continuous operation with a 30% de-rating. A space-saving air shift cover maximizes undercab clearance. Common applications include pneumatic blowers, aerial equipment, dump trucks, refuse trucks, and fire and rescue vehicles. Available from Pro Gear and Transmission.
Features
8-Bolt mounting configuration for common medium- and heavy-duty manual transmission apertures
Air shift cover designed for maximum clearance under the truck
Cast iron housing with tapered cone bearings on the output shaft
Tapered input shaft bearings for greater load-bearing capability versus needle bearings
Supports continuous operation with 30% de-rating
Compatible with Eaton/Fuller, Volvo/Mack, and Daimler/Detroit transmission platforms
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Air Shift
- Intermittent Torque Rating: 375 lb-ft (508 Nm) - check application pages for actual rating
- 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
- Lubricant Type: X - No Pressure Lube
Additional Information
The Chelsea 680 Series is suited for vocational applications including aerial work, snow and ice removal, fire and rescue, dump truck and trailer, service trucks, refuse, and blower and product pump systems. A deep mount housing option is available for Mack transmission applications. The 680 Series supports 32 output configurations and four internal speed ratios. Applicable reference documents include the 680 Series Parts List (HY25-2660-M1_US), 680 Series Sales Literature, and the Chelsea Power Take-Off General Information Catalog.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
