Chelsea 660 Series PTO

Celsea PTO - Series 660

The Chelsea 660 Series PTO is a powerful and economical workhorse designed for applications that demand higher torque and long-lasting reliability. Built with Parker Chelsea’s signature engineering quality, the 660 Series delivers exceptional performance and durability in demanding vocational truck environments.

Featuring a rugged cast iron housing and tapered cone bearings on the output shaft, the Chelsea 660 Series PTO provides an impressive torque capacity of up to 375 lb-ft—making it the ideal upgrade for applications requiring more power than the 442 Series.

For superior strength and longevity, the input shaft is supported by tapered roller bearings instead of needle bearings, offering greater load-bearing capability under continuous operation. The space-saving air shift cover ensures maximum under-truck clearance, simplifying installation in tight spaces.

With 26 output options—including Chelsea’s popular 360° rotatable flange for perfect pump alignment—along with four internal speed ratios and ten shift configurations, the Chelsea 660 Series PTO stands out as one of the most versatile and high-performance PTOs available for today’s vocational trucks.

Technical Specifications

  • Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
  • Intermittent Torque: 301 to 400 lb-ft, 501+ Nm, 375 lb-ft (Check Application Pages for Actual Torque Ratings), 508 Nm (Check Application Pages for Actual Torque Ratings)
  • Continuous Operation: Yes with 30% de-rating
  • Shift Type: Wire/Cable, Mechanical
  • Transmission Manufacturer: Eaton/Fuller, Volvo/Mack, Other
  • Output Power: 56+ HP, 51+ kW
  • Lubricant: P = Pressure Lube, X = No Pressure Lube
  • Output Shaft Type: Round Shaft (1-1/4″ – 5/16″ Key), SAE A (5/8″ – 9T) Pump Spline, 3/4″ – 11T Pump Spline, DIN 5462 Pump Spline, 1410 Companion Flange,, SAE BB (1″ – 15T) Pump Spline, SAE B (7/8″ – 13T) Pump Spline, SAE C (1-1/4″ – 14T) Pump Spline
  • Mounting Type: 6-Bolt
  • Shaft Power: 36 HP (500 RPM), 71 HP (1000 RPM), 107 HP (1500 RPM), 27 kW (500 RPM), 53 kW (1000 RPM), 180 kW (1500 RPM)
  • Weight: 28.2 lb, 12.8 kg

Key Benefits

  • One-piece gears for higher torque

  • Cast iron bearing caps

  • Greaseable Shaft Options

  • Two Year Warranty

Examples of Suitable Applications

  • Blower and Product pumps

  • Aerial Devices

  • Service Trucks

  • Dump Trucks & Trailers

  • Snow & Ice Removal

Let's Talk

Let WIT experts answer your questions or get you started with a quote for your project.