The Chelsea 680XQAHX-A3GY or 680XQAHXA3GY is a 680 Series Power Take-Off built for medium- to heavy-duty manual transmission applications with 8-bolt PTO apertures. The 680 Series is a common fit for Eaton Fuller transmissions and includes a deep mount housing option for Mack applications. The cast iron housing and tapered cone bearings on the output shaft give the 680 Series a high intermittent torque rating in the 301-400 lb-ft range, with continuous operation available at a 30 percent de-rating. Shift options in this series include wire/cable and mechanical. The 680 Series covers demanding vocational work including pneumatic blowers, aerial equipment, dump trucks, and refuse vehicles. Pro Gear and Transmission carries genuine Chelsea PTOs - call us to confirm this unit fits your transmission and application.
Features
8-bolt mounting for most manual transmission applications
Cast iron housing with tapered cone bearings on output shaft
Intermittent torque rating: 301-400 lb-ft (680 Series range)
Continuous operation supported with 30% de-rating
Shift options include wire/cable and mechanical
Deep mount housing option available for Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Intermittent Torque (Series Range): 301 to 400 lb-ft
- Continuous Operation: Yes, with 30% de-rating
- Output Power (Series): 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Output Types (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubricant System: No Pressure Lube (X designation)
- Transmission Compatibility (Series): Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Housing Material: Cast Iron
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
