The Chelsea 680GQAHX-A3AF or 680GQAHXA3AF is a 680 Series Power Take-Off assembly built for medium- and heavy-duty applications that demand reliable torque transfer. This unit mounts to transmissions with an 8-bolt PTO aperture, including Eaton/Fuller and Volvo/Mack fitments, and features a deep-mount housing option suited to Mack transmission applications. Shift is accomplished through wire/cable mechanical actuation. The 1-1/4" round output shaft (with key) delivers output power rated at 56+ HP and 51+ kW, with shaft power of 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. The 680 Series uses cast iron construction with tapered cone bearings on the output shaft, and the input shaft carries tapered bearings rather than needle bearings for greater load capacity. The series was specifically designed for higher-torque applications including pneumatic blowers. A genuine Chelsea part, available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
8-bolt mounting for broad compatibility with Eaton/Fuller, Volvo/Mack, and other manual transmission applications
Wire/cable mechanical shift actuation
1-1/4" round output shaft with key
Output power rated at 56+ HP (51+ kW); shaft power 36/71/107 HP at 500/1,000/1,500 RPM
Deep-mount housing option available for Mack transmission applications
Cast iron housing with tapered cone bearings on output shaft and tapered input shaft bearings for high load capacity
Tech Specs
- Intermittent Torque: 301-400 lb-ft (501+ Nm); 375 lb-ft / 508 Nm (check application pages for actual torque ratings)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP, 51+ kW
- 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
- Output Shaft Type: 1-1/4" Round; 1-1/4" Round with Key
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
