The Chelsea 660XHAHX-A3GQ or 660XHAHXA3GQ is a 660 Series Power Take-Off built for medium to heavy duty applications on popular 6-bolt manual transmissions, including Eaton/Fuller and Volvo/Mack units. The 660 Series carries an intermittent torque rating of up to 375 lb-ft and supports continuous operation with a 30% de-rating. The cast iron housing and tapered cone bearings on both the input and output shafts deliver strong load-bearing capability and long service life. Output options in the 660 Series include SAE A, SAE B, and SAE C pump flanges, driveline configurations, and Chelsea's 360-degree rotatable flange. Shift options include wire/cable and mechanical actuation. Call us to confirm proper fit for your application.
Features
Chelsea 660 Series Power Take-Off, part number 660XHAHX-A3GQ or 660XHAHXA3GQ
6-bolt mounting fits most popular manual transmissions including Eaton/Fuller and Volvo/Mack
Intermittent torque capacity up to 375 lb-ft; continuous operation supported with 30% de-rating
Cast iron housing with tapered cone bearings on input and output shafts
Output power up to 56+ HP; shaft power rated at 71 HP at 1,000 RPM
Multiple output configurations available including SAE pump flanges, driveline, and 360-degree rotatable flange
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable or Mechanical
- Intermittent Torque Capacity: Up to 375 lb-ft (508 Nm)
- Continuous Operation: Yes, with 30% de-rating
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: Round shaft 1-1/4 in. with 5/16 in. key; SAE A 5/8 in. 9-tooth spline; 3/4 in. 11-tooth spline; SAE BB 1 in. 15-tooth spline; SAE B 7/8 in. 13-tooth spline; SAE C 1-1/4 in. 14-tooth spline; 1410 companion flange; DIN 5462 pump spline
- Shaft Power: 36 HP at 500 RPM; 71 HP at 1,000 RPM; 107 HP at 1,500 RPM
- Output Power: 56+ HP
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, and other 6-bolt manual transmissions
- Housing Material: Cast iron
- Bearing Type: Tapered cone bearings on input and output shafts
Additional Information
Common applications for the Chelsea 660 Series include dump trucks, aerial devices, service trucks, blower and product pumps, and snow and ice removal equipment. The 660 Series is well suited for vocational and municipal equipment where torque demands exceed what a 442 Series PTO can handle. The space-saving air shift cover is designed to maximize clearance under the truck. Parker Chelsea documents available for this series include the 660 Series Parts List (HY25-2660-M1_US), 660 Series Sales Literature, and the Chelsea PTO General Information Catalog.Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
