680GHAHX-A3XD Chelsea Power Take-Off

The Chelsea 680GHAHX-A3XD is an 8-bolt Power Take-Off from the Chelsea 680 Series, built for medium to heavy duty applications including pneumatic blowers, dump trucks, aerial units, and refuse vehicles. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft and tapered bearings on the input shaft for strong load-bearing capability. The series supports output options including SAE A, SAE B, and ISO 7652 pump flanges as well as driveline outputs, and is compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmissions equipped with an 8-bolt PTO aperture. A deep mount housing option is available for Mack transmission applications. This unit is available from Pro Gear and Transmission.

Features

8-bolt mounting, compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmissions
Cast iron housing with tapered cone bearings on the output shaft
Tapered input shaft bearings for high load-bearing capability
Output options include SAE A, SAE B, ISO 7652 pump flanges, and driveline
Air shift cover designed for maximum clearance under the truck
Suited for higher torque applications including pneumatic blowers, aerial, dump, refuse, and fire/rescue equipment

Tech Specs

• Mounting Type: 8-Bolt
• Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other manual transmissions with 8-bolt PTO aperture
• Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
• Output Shaft Options: 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
• Shift Type: Wire/Cable, Mechanical
• Intermittent Torque Rating: 375 lb-ft (508 Nm) - see application pages for actual torque ratings
• 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
• Lubricant Options: Pressure Lube, No Pressure Lube

Additional Information

The Chelsea 680 Series supports four internal speed ratios and ten shift options. Chelsea's 360-degree rotatable flange is available among its 32 output configurations, offering flexibility for pump fitment. A deep mount housing option is offered for Mack transmission applications. Typical vocational applications include aerial, snow and ice removal, fire and rescue, dump truck and trailer, service trucks, refuse, and blower and product pump equipment.
Reference documents for this series include the 680 Series Parts List (HY25-2660-M1_US), 680 Series Sales Literature, and the Chelsea Power Take-Off General Information Catalog. Also referenced under the Detroit DT12 Adapter Owner's Manual for 238/489/680/826/880 Series.

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