The Chelsea 680GQAHX-A3RA or 680GQAHXA3RA is a 680 Series Power Take-Off built around an 8-bolt mounting configuration, making it a common fit for Eaton/Fuller manual transmissions and compatible with Mack applications via the available deep-mount housing option. The 680 Series uses a cast iron housing with tapered cone bearings on the output shaft and tapered bearings on the input shaft, designed to handle higher torque applications such as pneumatic blowers. Output options across the 680 Series include SAE A, SAE B, and ISO pump flanges, as well as driveline configurations, with a 360-degree rotatable flange available for improved pump fitment. Intermittent torque for the series is rated at 375 lb-ft, with continuous operation supported at a 30% de-rating. Call us to confirm the correct fit for your transmission.
Features
Chelsea 680 Series PTO, part number 680GQAHX-A3RA or 680GQAHXA3RA
8-bolt mounting configuration for Eaton/Fuller manual transmissions and Mack applications
Cast iron housing with tapered cone bearings on the output shaft for high torque handling
Tapered input shaft bearings for enhanced load-bearing capability over needle bearing designs
Series intermittent torque rating: 375 lb-ft; continuous operation supported with 30% de-rating
Shift type: Wire/Cable or Mechanical; output options include SAE A, SAE B, ISO 7652 flanges, and driveline
Tech Specs
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque (Series): 375 lb-ft (508 Nm) - Check application data for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing Material: Cast Iron
- Bearing Type (Output Shaft): Tapered Cone Bearings
- Bearing Type (Input Shaft): Tapered Bearings
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
