The Chelsea 680 Series Power Take-Off, part number 680XFAHX-A3GK or 680XFAHXA3GK, is an 8-bolt mount PTO built for medium to heavy duty manual transmission applications. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft and tapered bearings on the input shaft, giving it strong load-bearing capability suited for higher-torque work like pneumatic blowers. A deep mount housing option supports Mack transmission installations, and the series also covers Eaton Fuller and other compatible 8-bolt aperture transmissions. Shift options include wire/cable and mechanical. The space-saving air shift cover is designed to maximize clearance under the truck. Call us to confirm proper fit for your application.
Features
8-bolt mounting pattern for broad manual transmission coverage including Eaton Fuller and Mack
Cast iron housing with tapered cone bearings on the output shaft for long service life
Tapered input shaft bearings for greater load-bearing capability versus needle bearings
Designed for higher-torque applications such as pneumatic blowers
Deep mount housing option available for Mack transmission installations
Space-saving air shift cover maximizes undercarriage clearance
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other 8-bolt aperture manual transmissions
- Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Types: Round Shaft (1-1/4 in. with 5/16 in. key), SAE A (5/8 in. - 9T), SAE B (7/8 in. - 13T), SAE BB (1 in. - 15T), SAE C (1-1/4 in. - 14T), DIN 5462 Pump Spline, 1410 Companion Flange
- Intermittent Torque Rating: 301-400 lb-ft (series range; check application data for this specific configuration)
- Continuous Operation: Yes, with 30% de-rating
- Housing Material: Cast iron
- NMFC Code: 128520 - Hydraulic PTOs, Pumps, Motors, etc.
Additional Information
The Chelsea 680 Series is suited for vocational and municipal markets including aerial work, dump truck, refuse, fire and rescue, snow and ice removal, service trucks, and blower and product pump applications. Parker documentation for this series includes the 680 Series Parts List (HY25-2660-M1_US), the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, and the Chelsea Power Take-Off General Information Catalog. For questions about fitment or to verify compatibility with your transmission, contact Pro Gear and Transmission directly.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
