The Chelsea 680 Series Power Take-Off, part number 680DFMCX-56XY or 680DFMCX56XY, is a medium- to heavy-duty PTO built around an 8-bolt mounting configuration and a cast iron housing with tapered cone bearings on the output shaft. The 680 Series covers most manual transmission applications with 8-bolt apertures, including Eaton Fuller and Mack transmissions, with a deep mount housing option available for Mack applications. Shift options include wire/cable and mechanical. The series supports continuous operation with a 30% de-rating and is designed for higher-torque applications such as pneumatic blowers. Thirty-two output configurations are available within the 680 Series family. Call us to confirm proper fit for your application.
Features
8-bolt mounting configuration for most manual transmission apertures
Cast iron housing with tapered cone bearings on the output shaft
Deep mount housing option available for Mack transmission applications
Wire/cable and mechanical shift options
Supports continuous operation with 30% de-rating
Designed for higher-torque applications such as pneumatic blowers
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Intermittent Torque: 301-400 lb-ft (501+ Nm); check application pages for actual torque ratings
- Continuous Operation: Yes, with 30% de-rating
- Transmission Fitment: Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
- Housing Material: Cast Iron
- NMFC Code: 128520 (Hydraulic PTOs, Pumps, Motors, etc.)
Additional Information
The Chelsea 680 Series covers aerial, dump truck and trailer, fire and rescue, refuse, service truck, blower and product pump, and snow and ice removal applications. Reference documents for this series include the 680 Series Parts List (HY25-2660-M1_US), the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, and the Chelsea Power Take-Off General Information Catalog. Part number 680DFMCX-56XY is also referenced as SP680DFMCX-56XY in some catalog listings.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
