The Chelsea 680QFLZX-D3RY or 680QFLZXD3RY is a Power Take-Off from Chelsea's 680 Series, engineered for medium- and heavy-duty trucks with 8-bolt transmission PTO apertures. It uses a wire/cable mechanical shift and delivers intermittent torque in the 301-400 lb-ft range, with a rated peak of 375 lb-ft (508 Nm) - verify actual torque against your application data. Output shaft options include a 1-1/4" round and a 1-1/4" round with key. Shaft power output reaches 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. The deep-mount housing suits Mack transmission applications, and the cast iron housing with tapered cone bearings on the output shaft supports demanding cycles like pneumatic blowers. Compatible with Eaton/Fuller and Volvo/Mack transmissions among others. Call us to confirm proper fit for your application.
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft, supporting high-torque vocational cycles including pneumatic blowers, dump truck, refuse, aerial, and fire and rescue equipment. A deep-mount housing option is available for Mack transmission installations. The series offers four internal speed ratios and ten shift options, with 32 output configurations including a 360-degree rotatable flange for flexible pump positioning. The input shaft uses tapered bearings rather than needle bearings for greater load capacity.
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 option
Intermittent torque rating 301-400 lb-ft (up to 375 lb-ft / 508 Nm - check application pages for actual rating)
Shaft power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
Deep-mount housing option for Mack transmissions; designed for high-torque duty such as pneumatic blowers
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round; 1-1/4" Round with Key
- Intermittent Torque: 301-400 lb-ft / 501+ Nm; 375 lb-ft / 508 Nm (check application pages for actual torque ratings)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP / 27 kW at 500 RPM; 71 HP / 53 kW at 1000 RPM; 107 HP / 80 kW at 1500 RPM
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft, supporting high-torque vocational cycles including pneumatic blowers, dump truck, refuse, aerial, and fire and rescue equipment. A deep-mount housing option is available for Mack transmission installations. The series offers four internal speed ratios and ten shift options, with 32 output configurations including a 360-degree rotatable flange for flexible pump positioning. The input shaft uses tapered bearings rather than needle bearings for greater load capacity.
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
