680DFMCX-56XV Chelsea PTO

The Chelsea 680DFMCX-56XV or 680DFMCX56XV is a 680 Series Power Take-Off built for 8-bolt manual transmission applications in medium to heavy duty service. The 680 Series features a cast iron housing and tapered cone bearings on the output shaft, delivering intermittent torque in the 301-400 lb-ft range and output power of 56+ HP. Shift type options on this series include wire/cable and mechanical actuation. The 680 Series supports a deep mount housing option for Mack transmission applications and is designed for higher-torque demands such as pneumatic blowers. Compatible transmission manufacturers for this series include Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and others. Call us to confirm proper fit for your specific transmission and application.

Features

Chelsea 680 Series, 8-bolt mounting for most manual transmission apertures
Cast iron housing with tapered cone bearings on the output shaft
Intermittent torque rating: 301-400 lb-ft (501+ Nm); 56+ HP output power
Compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and other transmission manufacturers
Deep mount housing option available for Mack transmission applications
Wire/cable or mechanical shift actuation

Tech Specs

• Mounting Type: 8-Bolt
• Shift Type: Wire/Cable or Mechanical
• Intermittent Torque: 301-400 lb-ft (501+ Nm)
• Output Power: 56+ HP (51+ kW)
• Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
• Output Shaft Options (series): Round Shaft (1-1/4 in. with 5/16 in. key), SAE A (5/8 in. - 9T), SAE B (7/8 in. - 13T), SAE BB (1 in. - 15T), SAE C (1-1/4 in. - 14T), 1410 Companion Flange
• Output Flange Options (series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
• Transmission Compatibility (series): Eaton/Fuller, Volvo/Mack, Daimler/Detroit, Other
• Continuous Operation: Yes, with 30% de-rating
• Housing: Cast Iron

Additional Information

The Chelsea 680 Series is suited for aerial, dump truck, refuse, fire and rescue, snow and ice removal, service truck, and blower and product pump applications. The space-saving air shift cover provides maximum clearance under the truck. The input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability. Thirty-two output options and four internal speed ratios are available across the 680 Series, including a 360-degree rotatable flange for flexible pump fitment.
Cross-reference: also listed as SP680DFMCX-56XV. Part number may also be written without hyphen as 680DFMCX56XV.
Relevant Parker Chelsea documentation for this series includes the 680 Series Parts List (HY25-2660-M1_US), 680 Series Sales Literature, and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual. Call Pro Gear and Transmission to confirm this part number fits your specific transmission and PTO configuration.

Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.