680XFAHX-P3RK Chelsea Power Take-Off

The Chelsea 680XFAHX-P3RK is an 8-bolt, medium- to heavy-duty Power Take-Off from the Chelsea 680 Series, designed for Eaton Fuller transmissions and compatible with Volvo/Mack, Daimler/Detroit, and other manual transmission applications featuring an 8-bolt PTO aperture. The 680 Series uses a cast iron housing with tapered cone bearings on the output shaft, and the input shaft runs on tapered bearings rather than needle bearings for greater load capacity. The series is rated for intermittent torque up to 375 lb-ft (508 Nm), with continuous operation supported at a 30-percent de-rating. Shift options include wire/cable and mechanical. The 680 Series covers a broad range of vocational work including dump trucks, aerial equipment, refuse, and pneumatic blower applications.

Features

8-bolt mounting for compatibility with most manual transmission PTO apertures
Cast iron housing with tapered cone bearings on the output shaft
Tapered input shaft bearings for greater load-bearing capability versus needle bearing designs
Intermittent torque rating up to 375 lb-ft (508 Nm) per series specification
Continuous operation supported with 30% de-rating
Shift options include wire/cable and mechanical
Deep mount housing option available for Mack transmission applications

Tech Specs

• Series: Chelsea 680 Series
• Mounting Type: 8-Bolt
• Shift Type: Wire/Cable, Mechanical
• Intermittent Torque (Series): 375 lb-ft (508 Nm) - check application pages for actual rating
• Continuous Operation: Yes, with 30% de-rating
• Output Power (Series): 56+ HP / 51+ kW
• Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
• Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
• Output Shaft Types: Round Shaft (1-1/4" - 5/16" Key), SAE A (5/8" - 9T) Pump Spline, SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Companion Flange
• Housing Material: Cast Iron
• Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
• Lubricant Code: X = No Pressure Lube

Additional Information

The Chelsea 680 Series is suited for vocational applications including aerial equipment, dump trucks and trailers, fire and rescue, refuse, snow and ice removal, service trucks, and pneumatic blower and product pump systems. The space-saving air shift cover is designed to maximize clearance under the truck. Thirty-two output options are available across the 680 Series, including Chelsea's 360-degree rotatable flange for flexible pump fitment. Four internal speed ratios and ten shift options are offered across the series lineup.
Reference documents for this series include 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. The Detroit DT12 Adapter Owner's Manual (covers 238/489/680/826/880 Series) is also applicable where that adapter is in use.

Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.