The Chelsea 680 Series Power Take-Off, part number 680GQAHX-V5AF or 680GQAHXV5AF, is an 8-bolt mount PTO designed for medium to heavy-duty manual transmission applications. It shifts via wire/cable mechanical control and delivers output power exceeding 56 HP (51 kW), with shaft power ratings of 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. The output shaft is a 1-1/4" round configuration with key. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft and tapered input shaft bearings for strong load-bearing capability. The deep mount housing option makes it well suited for Mack transmission applications. Intermittent torque ratings for this series reach 375 lb-ft (508 Nm) - verify the actual rating for your specific application. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your truck and transmission.
Features
8-bolt mounting type for broad coverage of manual transmission applications
Wire/cable mechanical shift
1-1/4" round output shaft with key
Output power exceeding 56 HP (51 kW); shaft power 36/71/107 HP at 500/1000/1500 RPM
Cast iron housing with tapered cone bearings on output shaft for high torque demand
Deep mount housing option compatible with Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round with Key
- Output Power: 56+ HP, 51+ kW
- Shaft Power: 36 HP / 27 kW (500 RPM), 71 HP / 53 kW (1000 RPM), 107 HP / 80 kW (1500 RPM)
- Intermittent Torque: 301-400 lb-ft (501+ Nm); 375 lb-ft / 508 Nm (check application pages for actual torque ratings)
- Transmission Manufacturer Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
