The Chelsea 680GQAHX-S3RJ is a 680 Series Power Take-Off designed for 8-bolt manual transmission applications, including Eaton Fuller and Mack configurations. The 680 Series features a cast iron housing with tapered cone bearings on both the input and output shafts for greater load-bearing capability and long service life. Output options in the 680 Series include SAE A, SAE B, and SAE C pump flanges as well as driveline outputs, and the series supports four internal speed ratios. The space-saving air shift cover is engineered for maximum clearance under the truck. Common applications include dump trucks, pneumatic blowers, aerial equipment, refuse trucks, and fire and rescue vehicles. Call us to confirm proper fit for your application.
Features
Chelsea 680 Series PTO, part number 680GQAHX-S3RJ or 680GQAHXS3RJ
8-bolt mounting for most manual transmission apertures
Cast iron housing with tapered cone bearings on input and output shafts
Deep mount housing option available for Mack transmission applications
Designed for higher torque applications including pneumatic blowers
Space-saving air shift cover for maximum under-truck clearance
Tech Specs
- Mounting Type: 8-Bolt
- Series: Chelsea 680 Series
- Shift Type: Wire/Cable or Mechanical
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: 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
- Intermittent Torque Rating: 301-400 lb-ft (501+ Nm); series reference value 375 lb-ft / 508 Nm (verify on application pages)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Continuous Operation: Yes, with 30% de-rating
- Transmission Compatibility: Eaton Fuller, Volvo/Mack, Daimler/Detroit
- Housing Material: Cast Iron
- Lubricant: No pressure lube (series X designation)
Additional Information
The Chelsea 680 Series is a common medium- to heavy-duty PTO covering most manual transmissions with an 8-bolt PTO aperture. Thirty-two output configurations and four internal speed ratios are available across the 680 Series, including Chelsea's 360-degree rotatable flange for flexible pump positioning. Typical vocational applications include aerial lifts, snow and ice removal equipment, fire and rescue apparatus, dump trucks, refuse vehicles, and blower or product pump systems. Part number 680GQAHX-S3RJ is also referenced as SP680GQAHX-S3RJ. Not sure this is your part? Give us a call.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
