The Chelsea 660XRAHX-A3AZ or 660XRAHXA3AZ is a 660 Series Power Take-Off designed for most popular manual 6-bolt transmissions in medium to heavy-duty applications. The 660 Series is built around a cast iron housing with tapered cone bearings on both the output and input shafts, giving it a series intermittent torque capacity up to 375 lb-ft. Shift options include wire/cable and mechanical actuation, and the space-saving air shift cover maximizes clearance under the truck. Compatible transmission manufacturers for the 660 Series include Eaton/Fuller, Volvo/Mack, and other popular manual units. Pro Gear and Transmission carries this genuine Chelsea part. Call us to confirm proper fit for your application.
Features
Chelsea 660 Series Power Take-Off, part number 660XRAHX-A3AZ or 660XRAHXA3AZ
6-bolt mounting pattern fits most popular manual transmissions
Cast iron housing with tapered cone bearings on input and output shafts
Intermittent torque capacity up to 375 lb-ft (508 Nm) at the series level
Wire/cable and mechanical shift options available
Compatible with Eaton/Fuller, Volvo/Mack, and other manual transmission platforms
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque (Series): Up to 375 lb-ft (508 Nm)
- 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
- Housing Material: Cast Iron
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other Manual 6-Bolt
- Output Options (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: No Pressure Lube (X designation)
Additional Information
The Chelsea 660 Series is suited for aerial devices, dump trucks, service trucks, snow and ice removal equipment, and blower and product pump applications. The series offers 26 output options including a 360-degree rotatable flange for optimal pump positioning, four internal speed ratios, and ten shift options. Parker documents available for this series include the 660 Series Parts List (HY25-2660-M1_US), 660 Series Sales Literature, and the Chelsea Power Take-Off General Information Catalog. For output option details, refer to Parker PTO-PNI-205 (RH Output Option) and PTO-PNI-250 (New 660/680 Series Ratio and Output Options).Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
