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Dayton 1/4 inch bore closed ball bushing bearing stainless steel polymer cage

Dayton

Dayton 2CNJ8 Ball Bushing Bearing Closed 1/4 in Bore

SKU CH-90KV-Z1ZRR

A closed linear ball bearing with a 1/4 in bore and 3/4 in length, rated for 46 lbf dynamic and 60 lbf static loads

  • Precise linear motion with ±.001 in bore tolerance
  • High-speed operation up to 5000 in/min steady state
  • Durable stainless steel and polymer cage construction
  • Reliable performance from -4 °F to 176 °F
  • Strong load handling with 46 lbf dynamic and 60 lbf static capacity

Application fit

This linear ball bushing bearing is designed for inch-series machinery requiring a 1/4 in bore and 1/2 in outside diameter. It suits builders assembling linear motion guides, jigs or fixtures where a closed, non-self-aligning bearing is specified. Buyers who need a self-aligning variant or a different bore size should select another part.

Critical specification

The dynamic load capacity is 46 lbf and the static load capacity is 60 lbf, which are the decisive figures for verifying that the bearing can handle the intended radial force. Inside diameter tolerance is held to +/- .001 in, ensuring consistent fit on 1/4 in shafts. Steady state speed is rated at 5000 in/min for continuous linear travel.

Thermals and power

Operating temperature range spans -4 Degrees F to 176 Degrees F, covering typical shop and light-industrial environments. The stainless steel and polymer cage construction runs without external lubrication in normal use, producing negligible acoustic signature. No electrical power is consumed by the bearing itself.

Highlights

  • Precise linear motion with ±.001 in bore tolerance
  • High-speed operation up to 5000 in/min steady state
  • Durable stainless steel and polymer cage construction
  • Reliable performance from -4 °F to 176 °F
  • Strong load handling with 46 lbf dynamic and 60 lbf static capacity

Specifications

No published specifications for this item yet.

Questions about this item

What does a dynamic load capacity of 46 lbf mean when the bearing is running on a shaft?

It is the maximum radial load the bearing can carry continuously while moving at the rated speed without exceeding its design life.

How does the inch-series bore of 1/4 in and the closed-ball design limit shaft fit and sealing?

The closed construction retains the ball complement and keeps contaminants out, so the shaft must be machined to the stated tolerance for proper running clearance.

What mounting space does the 3/4 in overall length and 1/2 in outside diameter require in the housing?

A straight bore of 1/2 in diameter and at least 3/4 in depth is needed to seat the bearing fully without interference.

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