The Chelsea 680 Series Power Take-Off Assembly, part number 680XSAHX-A4XV or 680XSAHXA4XV, is a medium- to heavy-duty 8-bolt PTO built for higher-torque demands such as pneumatic blowers, dump trucks, refuse bodies, and aerial units. It mounts to Eaton/Fuller and Volvo/Mack transmissions, with a deep-mount housing option specifically for Mack applications. Shift is wire/cable mechanical. The 1-1/4" round output shaft is available with key, and output power exceeds 56 HP. Shaft power ratings for the 680 Series are 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Intermittent torque is rated at 375 lb-ft (508 Nm) - check Chelsea application pages for your specific torque requirement. Call us to confirm proper fit for your transmission and application.
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft for increased load capacity compared to needle-bearing designs. The input shaft also uses tapered bearings for greater durability under sustained load. Chelsea offers 32 output configurations for this series, including a 360-degree rotatable flange that provides flexibility in pump positioning. Four internal speed ratios and ten shift options are available across the 680 Series. Typical applications include aerial equipment, snow and ice removal, fire and rescue, dump trucks and trailers, service trucks, refuse vehicles, and blower and product pump systems. Continuous operation is supported with a 30% de-rating. The 680 Series is compatible with SAE A, SAE B, and ISO 7652 pump flanges in addition to driveline outputs.
Features
8-bolt mounting for broad coverage of manual transmission applications
Wire/cable mechanical shift type
1-1/4" round output shaft with key
Intermittent torque rating: 375 lb-ft (508 Nm) - verify on Chelsea application pages
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
Deep-mount housing option available for Mack transmission applications
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (check Chelsea application pages for actual torque ratings)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP / 51+ kW
- Output Shaft Type: 1-1/4" Round, 1-1/4" Round with Key
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Shaft Power: 36 HP (500 RPM), 71 HP (1,000 RPM), 107 HP (1,500 RPM) / 27 kW (500 RPM), 53 kW (1,000 RPM), 80 kW (1,500 RPM)
Additional Information
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft for increased load capacity compared to needle-bearing designs. The input shaft also uses tapered bearings for greater durability under sustained load. Chelsea offers 32 output configurations for this series, including a 360-degree rotatable flange that provides flexibility in pump positioning. Four internal speed ratios and ten shift options are available across the 680 Series. Typical applications include aerial equipment, snow and ice removal, fire and rescue, dump trucks and trailers, service trucks, refuse vehicles, and blower and product pump systems. Continuous operation is supported with a 30% de-rating. The 680 Series is compatible with SAE A, SAE B, and ISO 7652 pump flanges in addition to driveline outputs.
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
