The Chelsea 660XFDAX-P3XD is a 6-bolt Power Take-Off from the Chelsea 660 Series, designed for medium to heavy duty applications across vocational, construction, and municipal equipment. 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 the output shaft deliver long service life, while tapered bearings on the input shaft provide greater load-bearing capability over needle-bearing designs. This unit fits most popular 6-bolt manual transmissions from Eaton/Fuller, Volvo/Mack, and other manufacturers. Shift type is Wire/Cable or Mechanical. Available from Pro Gear and Transmission.
Features
6-bolt mounting, fits most popular manual transmissions including Eaton/Fuller and Volvo/Mack
Cast iron housing with tapered cone bearings on both input and output shafts
Intermittent torque rating up to 375 lb-ft (508 Nm)
Continuous operation supported with 30% de-rating
Wire/Cable or Mechanical shift type
Output options include SAE A, SAE B, and SAE C pump flanges, driveline, and round shaft configurations
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque: Up to 375 lb-ft (508 Nm)
- Continuous Operation: Yes, with 30% de-rating
- 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), SAE BB (1" - 15T), SAE B (7/8" - 13T), SAE C (1-1/4" - 14T), 3/4" - 11T, DIN 5462, 1410 Companion Flange
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other 6-bolt manual transmissions
- Lubricant Type: X = No Pressure Lube (per part number decode)
Additional Information
The Chelsea 660 Series suits aerial devices, dump trucks, service trucks, snow and ice removal equipment, blower and product pumps, and construction machinery. The series offers four internal speed ratios, ten shift options, and 26 output configurations including Chelsea's 360-degree rotatable flange for flexible pump positioning. Applicable Parker Chelsea documents include the 660 Series Parts List (HY25-2660-M1_US), the 660 Series Sales Literature, and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, available through Parker's official documentation resources.Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
