The Chelsea 680GHAHX-A3AF or 680GHAHXA3AF is a medium to heavy duty 8-bolt mount power take-off from Parker Chelsea's 680 Series. The 680 Series is engineered for higher torque applications, including pneumatic blowers, dump trucks, aerial units, and refuse equipment. The cast iron housing and tapered cone bearings on the output shaft provide a high torque rating and long service life. The series supports continuous operation with a 30% de-rating and delivers output power of 56 HP or more. The input shaft uses tapered bearings rather than needle bearings for greater load capacity. The 680 Series also includes a deep mount housing option suited to Mack transmission applications. Call us to confirm proper fit for your specific transmission and application.
Features
8-Bolt mounting pattern for broad manual transmission coverage
Cast iron housing with tapered cone bearings on the output shaft
Supports continuous operation with 30% de-rating
Designed for higher torque applications such as pneumatic blowers
Deep mount housing option available for Mack transmission applications
Output power of 56 HP or more
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Intermittent Torque: 301 to 400 lb-ft (series range; check application pages for this part's actual torque rating)
- Continuous Operation: Yes, with 30% de-rating
- Compatible Transmission Manufacturers: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Output Shaft Types: Round Shaft (1-1/4 in. with 5/16 in. key), SAE A (5/8 in. 9-tooth) pump spline, SAE B (7/8 in. 13-tooth) pump spline, SAE BB (1 in. 15-tooth) pump spline, SAE C (1-1/4 in. 14-tooth) pump spline, 1410 companion flange (series options; confirm for this specific part)
- Output Flange Options: SAE A pump flange, SAE B pump flange, ISO 7652 pump flange, driveline
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
