The Chelsea 680GFAHX-A3RY or 680GFAHXA3RY is a medium- to heavy-duty 680 Series Power Take-Off built for manual transmissions with an 8-bolt PTO aperture. The 680 Series is a common fit for Eaton Fuller transmissions and includes a deep-mount housing option designed for Mack applications. Cast iron housing and tapered cone bearings on the output shaft give the series its high torque capability, making it a recognized choice for pneumatic blower and higher-torque applications. The 680 Series is rated for intermittent torque in the 301-400 lb-ft range, supports continuous operation with a 30% de-rating, and the space-saving air shift cover is designed to maximize clearance under the truck. Call us to confirm proper fit for your specific transmission and application.
Features
Chelsea 680 Series PTO, part number 680GFAHX-A3RY or 680GFAHXA3RY
8-bolt mounting type for broad manual transmission coverage
Cast iron housing with tapered cone bearings on the output shaft for high torque capacity
Intermittent torque rating: 301-400 lb-ft; continuous operation supported with 30% de-rating
Deep-mount housing option for Mack transmission applications
Space-saving air shift cover for maximum clearance under the truck
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Intermittent Torque: 301-400 lb-ft (check application pages for actual torque rating)
- Continuous Operation: Yes, with 30% de-rating
- Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other (8-bolt aperture)
- 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: Tapered Cone Bearings (output shaft); Tapered Bearings (input shaft)
Additional Information
The Chelsea 680 Series is suited for a wide range of vocational applications including aerial lifts, dump trucks, refuse trucks, snow and ice removal equipment, fire and rescue vehicles, service trucks, and blower and product pump systems. The 680 Series offers four internal speed ratios, ten shift options, and thirty-two output configurations including Chelsea's 360-degree rotatable flange for flexible pump fitment. Parker Chelsea reference documents for this series include the 680 Series Parts List (HY25-2660-M1_US) and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, available through Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
