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Dayton 2X499 flexible coupling half inch bore 725 RPM

Dayton

Dayton 2X499 Flexible Coupling 1/2 in Bore 725 RPM

SKU CH-E1BC-X924N MPN 2X499

Connects shafts up to 725 RPM with a flexible Buna nitrate rubber sleeve and knurled steel hubs

  • TypeDrain Components
  • Flexible Buna Nitrate rubber sleeve absorbs vibration
  • Knurled steel hubs provide secure shaft grip
  • 1/2 inch bore fits standard shafts
  • Rated for 725 RPM continuous operation
  • Maximum 1/2 hp power transmission capacity

Flexible Coupling Application

The Dayton 2X499 flexible coupling connects two half-inch shafts in light-duty power transmission. A Buna nitrate rubber sleeve absorbs vibration and misalignment while knurled steel hubs grip each shaft. It suits small motors, pumps or gear drives running at modest speeds.

Limits And Alternatives

Builders needing higher torque capacity or speeds above 725 RPM should choose a rigid or gear-type coupling. The half-horsepower ceiling also rules out most industrial drives. Buyers who require a larger bore or a different screw size must select another model.

Critical Specification

The maximum operating speed is 725 RPM, which determines whether the coupling will survive the intended motor speed. Exceeding this limit risks sleeve failure and lost motion.

Highlights

  • Flexible Buna Nitrate rubber sleeve absorbs vibration
  • Knurled steel hubs provide secure shaft grip
  • 1/2 inch bore fits standard shafts
  • Rated for 725 RPM continuous operation
  • Maximum 1/2 hp power transmission capacity

Specifications

TypeDrain Components
BrandDayton
Model2X499

Questions about this item

How do I install the 1/2 in bore flexible coupling and which step is often missed?

Slide the knurled steel hubs onto each shaft until the 1/2 in bore seats fully then tighten both 1/4-20 set screws evenly; the step most often missed is checking that the 3 1/2 in overall length allows the Buna nitrate sleeve to flex without binding.

What maintenance or replacement will the 725 RPM flexible coupling need later?

Inspect the Buna nitrate rubber sleeve periodically for cracks or hardening and replace the coupling if the sleeve shows wear; the knurled steel hubs rarely need replacement unless the 1/4-20 screw threads strip.

What limit appears first when the coupling runs continuously at 725 RPM?

The 1/2 hp power rating is the first limit reached under sustained 725 RPM operation; exceeding it can overheat the Buna nitrate sleeve and cause premature failure.

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