The Chelsea 680 Series Power Take-Off Assembly, part number 680ZQDAX-A5XY or 680ZQDAXA5XY, is a medium- to heavy-duty PTO built around an 8-bolt mounting configuration. It uses a wire/cable mechanical shift and delivers an intermittent torque rating in the 301-400 lb-ft range, with 375 lb-ft noted for specific applications (verify on Chelsea application pages). The 1-1/4" round output shaft with key suits higher-torque demands such as pneumatic blowers. Shaft power reaches 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. A deep-mount housing option supports Mack transmission applications, and the unit is also compatible with Eaton/Fuller and other 8-bolt transmissions. Call us to confirm proper fit for your application.
The Chelsea 680 Series is built for vocational applications including aerial work, dump trucks, refuse vehicles, fire and rescue, snow and ice removal, service trucks, and blower and product pump systems. The cast iron housing and tapered cone bearings on the output shaft contribute to the series' high torque rating and long service life. The input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability. The 680 Series offers 32 output options, including Chelsea's 360-degree rotatable flange, four internal speed ratios, and ten shift options. Continuous operation is supported with a 30% de-rating applied.
Features
8-Bolt mounting for broad manual transmission coverage including Eaton/Fuller and Volvo/Mack
Wire/cable mechanical shift type
1-1/4" round output shaft with key for higher-torque applications
Intermittent torque: 301-400 lb-ft range; 375 lb-ft in specific applications (check Chelsea application pages)
Shaft power output: 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: 301-400 lb-ft (501+ Nm); 375 lb-ft / 508 Nm in specific applications - check Chelsea application pages for actual ratings
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP (51+ kW)
- Transmission Manufacturer Compatibility: Volvo/Mack, Eaton/Fuller, Other 8-Bolt
- Output Shaft Type: 1-1/4" Round; 1-1/4" Round with Key
- Mounting Type: 8-Bolt
- Shaft Power: 36 HP / 27 kW at 500 RPM; 71 HP / 53 kW at 1,000 RPM; 107 HP / 80 kW at 1,500 RPM
Additional Information
The Chelsea 680 Series is built for vocational applications including aerial work, dump trucks, refuse vehicles, fire and rescue, snow and ice removal, service trucks, and blower and product pump systems. The cast iron housing and tapered cone bearings on the output shaft contribute to the series' high torque rating and long service life. The input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability. The 680 Series offers 32 output options, including Chelsea's 360-degree rotatable flange, four internal speed ratios, and ten shift options. Continuous operation is supported with a 30% de-rating applied.
