The Chelsea 680XQAHX-A3RK is a medium- to heavy-duty Power Take-Off from the 680 Series, designed for manual transmissions with an 8-bolt PTO aperture. The 680 Series features a cast iron housing and tapered cone bearings on the output shaft, delivering strong performance in higher-torque applications such as pneumatic blowers. Tapered input shaft bearings replace needle bearings for greater load-bearing capability. The series supports Eaton/Fuller, Mack, and other transmission applications, with a deep mount housing option available for Mack. Shift type is wire/cable or mechanical. Continuous operation is supported with a 30% de-rating. Part number also referenced as 680XQAHXA3RK. Call us to confirm proper fit for your application.
Features
Chelsea 680 Series Power Take-Off, part number 680XQAHX-A3RK or 680XQAHXA3RK
8-bolt mounting for manual transmissions including Eaton/Fuller and Mack applications
Cast iron housing with tapered cone bearings on the output shaft
Strong tapered input shaft bearings for greater load-bearing capability versus needle bearings
Intermittent torque rating: 301-400 lb-ft (501+ Nm) range; verify actual rating on application pages
Wire/cable or mechanical shift type; continuous operation supported with 30% de-rating
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Intermittent Torque: 301-400 lb-ft (501+ Nm); see application pages 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: Tapered Cone (output shaft); Tapered (input shaft)
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
The Chelsea 680 Series is built for vocational applications where higher torque output is required. Typical uses include aerial equipment, dump trucks, refuse vehicles, fire and rescue apparatus, snow and ice removal, service trucks, and blower/product pump systems. The space-saving air shift cover is designed to maximize clearance under the truck. The series also offers 32 output options, four internal speed ratios, and ten shift options, including Chelsea's 360-degree rotatable flange for flexible pump fitment. A deep mount housing option is available for Mack transmission applications. 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 from Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
