Description
The Chelsea 680 Series Power Take-Off Assembly, part number 680XQAHX-P5RF or 680XQAHXP5RF, is a medium- to heavy-duty PTO built for 8-bolt transmission openings on Eaton/Fuller, Volvo/Mack, and other compatible transmissions. It features wire/cable mechanical shifting and a 1-1/4″ round output shaft with key. Intermittent torque rating for the 680 Series reaches 375 lb-ft (508 Nm) – check Chelsea application pages to confirm the rating for your specific installation. Shaft power output across the series runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. The deep-mount housing option makes this unit a fit for Mack transmission applications, and the cast iron housing with tapered cone bearings on the output shaft contributes to the series’ long service life. Common applications include pneumatic blowers, dump trucks, refuse equipment, and fire and rescue vehicles. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
8-bolt mounting configuration fits most manual transmissions with an 8-bolt PTO aperture
Wire/cable mechanical shift type
1-1/4″ round output shaft with key
Intermittent torque rating up to 375 lb-ft (508 Nm) for the 680 Series – verify actual rating on Chelsea application pages
Shaft power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
Deep-mount housing option supports Mack transmission applications
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (Check Chelsea Application Pages for actual torque rating)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP, 51+ kW
- Transmission Manufacturer Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Output Shaft Type: 1-1/4″ Round with Key
- Mounting Type: 8-Bolt
- Shaft Power: 36 HP (500 RPM), 71 HP (1000 RPM), 107 HP (1500 RPM) / 27 kW (500 RPM), 53 kW (1000 RPM), 80 kW (1500 RPM)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 680 Series is built with a cast iron housing and tapered cone bearings on the output shaft for durability in demanding vocational service. The input shaft also uses tapered bearings rather than needle bearings, increasing load-bearing capability. The 680 Series offers 32 output options including a 360-degree rotatable flange, four internal speed ratios, and ten shift options. Typical applications include aerial equipment, snow and ice removal, fire and rescue, dump trucks, refuse trucks, and pneumatic blowers and product pumps.
