The Chelsea 680XFAHX-P5RK is a 680 Series Power Take-Off built for medium- to heavy-duty manual transmission applications using an 8-bolt PTO aperture. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft, delivering an intermittent torque rating of up to 375 lb-ft (508 Nm). It is designed for higher-torque demands such as pneumatic blowers and is compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmission families. A deep mount housing option supports Mack applications. Output choices across the 680 Series include SAE A, SAE B, and driveline configurations, with mechanical or wire/cable shift. Available from Pro Gear and Transmission.
Features
8-bolt mounting for broad manual transmission coverage
Cast iron housing with tapered cone bearings on the output shaft
Intermittent torque rating up to 375 lb-ft (508 Nm) series rating
Deep mount housing option for Mack transmission applications
Compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit transmissions
Mechanical or wire/cable shift options across the 680 Series
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Intermittent Torque (Series): 375 lb-ft (508 Nm) - check application pages for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable or Mechanical
- Output Options (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Power (Series): 56+ HP / 51+ kW
Additional Information
The Chelsea 680 Series is suited for vocational and municipal markets including aerial, dump truck, fire and rescue, refuse, snow and ice removal, service trucks, and blower and product pump applications. The series offers four internal speed ratios and ten shift options, along with 32 output configurations including Chelsea's 360-degree rotatable flange for pump positioning flexibility. Part number 680XFAHX-P5RK or SP680XFAHX-P5RK. Relevant Chelsea documentation includes the 680 Series Parts List (HY25-2660-M1_US), 680 Series Sales Literature, and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
