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Dayton linear ball bearing 3/8 inch bore stainless steel polymer cage closed type

Dayton

Dayton 2CNJ9 Ball Bushing Bearing 3/8 in Bore

SKU CH-M932-GTGS6

A linear ball bearing with a 3/8 in bore, 50 lbf dynamic and 71 lbf static load capacity, and a stainless steel cage

  • Smooth linear motion with 3/8 in bore and 5/8 in OD
  • 50 lbf dynamic load capacity for reliable performance
  • 71 lbf static load capacity handles stationary forces
  • Operates from -4 °F to 176 °F across environments
  • 5000 in/min steady-state speed suits high-speed applications

Linear ball bearing for inch systems

The Dayton 2CNJ9 is a closed linear ball bushing with a 3/8 in bore and 5/8 in outside diameter. It uses a stainless steel and polymer cage and is not self-aligning. Engineers and maintenance teams can use it for linear motion guides in inch-based machinery where compact closed bearings are required.

Thermal limits and steady speed

Maximum operating temperature is 176 Degrees F and minimum is -4 Degrees F. The bearing is rated for a steady state speed of 5000 in/min. Dynamic load capacity is 50 lbf and static load capacity is 71 lbf, giving a clear envelope for normal use without overheating or excessive noise.

Build fit and constraints

Inside diameter tolerance is +/- 0.001 in and overall length is 7/8 in. The closed design keeps lubrication contained and excludes contaminants. Buyers who need self-alignment or a different bore size cannot use this part. It frees up design space for short-stroke linear axes in tight assemblies.

Highlights

  • Smooth linear motion with 3/8 in bore and 5/8 in OD
  • 50 lbf dynamic load capacity for reliable performance
  • 71 lbf static load capacity handles stationary forces
  • Operates from -4 °F to 176 °F across environments
  • 5000 in/min steady-state speed suits high-speed applications

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the 3/8 in bore bearing and what step is often missed?

Press the 5/8 in outside diameter into a housing bored to a .001 in tolerance, then secure axially — the step most often missed is verifying bore alignment before pressing.

What maintenance will the closed ball bushing need later?

The stainless steel and polymer cage runs without relubrication; replacement is only required when wear exceeds the 50 lbf dynamic or 71 lbf static load ratings.

What limit appears first during continuous operation at 5000 in/min?

The 176 °F maximum operating temperature is reached before the 5000 in/min steady-state speed limit under sustained load.

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