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Cylindrical stainless steel linear ball bushing bearing, closed type, 1 1/4 inch bore

Dayton

Dayton 2CNK5 Ball Bushing Bearing Closed 1 1/4 in Bore

SKU CH-6WGY-AFS76

Closed linear ball bearing with a 1 1/4 inch bore delivers 352 lbf dynamic and 616 lbf static load capacity

  • Handles heavy radial loads with 616 lbf static capacity
  • Moves smoothly at 5000 in/min steady-state speed
  • Operates reliably from -4 to 176 °F
  • Precise fit ensured by ±.0005 in bore tolerance
  • Durable stainless-steel and polymer-cage construction resists wear

Linear Ball Bearing for Inch-Series Shafts

The Dayton 2CNK5 is a closed-type linear ball bushing designed for 1 1/4 inch diameter shafts. Its stainless steel and polymer cage construction suits machinery and automation applications requiring precise linear motion. The bearing fits a 2 inch outside diameter housing with an overall length of 2 5/8 inches.

Sustained Load and Speed Performance

Under continuous operation the bearing delivers a dynamic load capacity of 352 lbf and a static load capacity of 616 lbf. Steady state speed is rated at 5000 in/min while the operating temperature range spans -4 to 176 degrees Fahrenheit. The design is not self-aligning so shaft alignment must be maintained by the surrounding assembly.

Upgrade Path and Fit Considerations

This unit replaces worn or lower-capacity bushings on 1 1/4 inch shafts where a closed bearing and tighter inside diameter tolerance of +/- .0005 in are specified. The jump is worthwhile when the application demands the stated load ratings and temperature range rather than a lighter-duty alternative. Buyers needing self-alignment or a different bore size should look elsewhere.

Highlights

  • Handles heavy radial loads with 616 lbf static capacity
  • Moves smoothly at 5000 in/min steady-state speed
  • Operates reliably from -4 to 176 °F
  • Precise fit ensured by ±.0005 in bore tolerance
  • Durable stainless-steel and polymer-cage construction resists wear

Specifications

No published specifications for this item yet.

Questions about this item

How warm does the 1 1/4 in bore bearing get when running at 5000 in/min all day?

The maximum operating temperature is 176 Degrees F, so the bearing is rated to handle that heat level during continuous operation at the steady-state speed.

What shaft tolerance must I already have for the 1 1/4 in bore to fit correctly?

The inside diameter tolerance is +/- 0.0005 in, so the shaft should be manufactured to match that clearance for proper installation and performance.

Will this closed ball bushing work with the older linear rails I already use?

The bearing has a 2 in outside diameter and 2 5/8 in overall length with a closed design, so it fits rails and housings built to those inch-series dimensions.

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