The Chelsea 680DFMAX-56RY is an 8-bolt Power Take-Off from the Chelsea 680 Series, built for medium- to heavy-duty manual transmission applications. The cast iron housing and tapered cone bearings on the output shaft give the 680 Series its high torque rating and long service life. The 680 Series supports SAE A, SAE B, and ISO 7652 pump flange outputs, along with driveline output configurations, and accommodates wire/cable or mechanical shift. It fits Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmissions with an 8-bolt PTO aperture, with a deep mount housing option available for Mack applications. A genuine Chelsea part, sold by Pro Gear and Transmission.
Features
8-bolt mounting for compatibility with most manual transmissions featuring an 8-bolt PTO aperture
Cast iron housing with tapered cone bearings on the output shaft for long service life
Supports SAE A, SAE B, and ISO 7652 pump flange output types, as well as driveline output
Wire/cable or mechanical shift options
Compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmission manufacturers
Deep mount housing option available for Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Series Intermittent Torque Rating: 375 lb-ft (508 Nm) - check application pages for actual rating
- Series Output Power: 56+ HP (51+ kW)
- Series Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Lubricant: Pressure Lube or No Pressure Lube (by configuration)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and others with 8-bolt aperture
- Housing Material: Cast Iron
- Continuous Operation: Yes, with 30% de-rating
Additional Information
Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
