The Chelsea 660GSJAX-A3GF or 660GSJAXA3GF is a 660 Series Power Take-Off built for medium to heavy-duty vocational applications. The 660 Series mounts to most popular 6-bolt manual transmissions, including Eaton/Fuller and Volvo/Mack units, with wire/cable or mechanical shift options. The cast iron housing and tapered cone bearings on the output shaft deliver an intermittent torque capacity of up to 375 lb-ft (508 Nm) for demanding work cycles. Continuous operation is supported with a 30% de-rating. Available output configurations include SAE A, SAE B, and SAE C pump flanges, round shaft, and companion flange. Common applications include dump trucks, aerial devices, service trucks, and snow and ice removal equipment. Call us to confirm proper fitment for your specific transmission.
Features
6-bolt mounting fits most popular manual transmissions including Eaton/Fuller and Volvo/Mack
Intermittent torque rating up to 375 lb-ft (508 Nm) for heavy-duty vocational demands
Cast iron housing with tapered cone bearings on output shaft for long service life
Supports continuous operation with 30% de-rating applied
Wire/cable or mechanical shift options
Suited for dump trucks, aerial devices, service trucks, and snow and ice removal equipment
Tech Specs
- Mounting Type: 6-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, and other 6-bolt manual transmissions
- Shift Type: Wire/Cable or Mechanical
- Intermittent Torque Capacity: Up to 375 lb-ft (508 Nm)
- Continuous Operation: Yes, with 30% de-rating
- Output Options: SAE A Pump Flange, SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Round Shaft (1-1/4" - 5/16" Key), SAE A (5/8" - 9T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE B (7/8" - 13T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, 3/4" - 11T Pump Spline, DIN 5462 Pump Spline, 1410 Companion Flange, Driveline
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing: Cast Iron
- Bearings: Tapered cone bearings on output shaft; tapered bearings on input shaft
- Lubricant Type: X = No Pressure Lube (as indicated in part number)
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
The Chelsea 660 Series includes four internal speed ratios and ten shift options, giving this platform broad versatility across aerial, construction, and municipal equipment applications. The space-saving air shift cover is designed to maximize clearance under the truck. Chelsea's 360-degree rotatable flange option allows optimal pump positioning without modifying plumbing. The 660 Series steps up from the 442 Series PTO where higher torque capacity is required. Related Parker Chelsea documentation includes the 660 Series Parts List (HY25-2660-M1_US), the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, and the 660 Series Sales Literature, all available through Parker Chelsea.Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
