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Bronze flanged sleeve bearing with 1.25 in flange and 3/4 in bore

Bunting Bearings

Bunting Bearings EF121612 flanged sleeve bearing 3/4 in bore bronze PK3

SKU CH-7W00-MTM23

Flanged bronze sleeve bearing with 3/4 inch bore and self-lubricating SAE 30 oil for vacuum environments

  • Self-lubricating SAE 30 oil reduces maintenance needs
  • Bronze construction handles 220°F max operating temperature
  • Flanged design with 1.25 in diameter secures axial positioning
  • 3/4 in bore fits standard shaft dimensions precisely
  • Tight .005 in length tolerance ensures consistent alignment

Flanged bronze sleeve bearing 3/4 in bore

This Bunting Bearings flanged sleeve bearing has a 3/4 in bore and a 1 in outside diameter. The overall length is 3/4 in with a length tolerance of +/- .005 in. A 1.25 in flange diameter and .187 in flange thickness provide axial location. The sintered bronze construction is self-lubricating with SAE 30 oil.

Self-lubricating material and flange design

The sintered bronze material stores SAE 30 oil internally so the bearing lubricates itself during operation. This removes the need for external grease lines or periodic re-lubrication. The integral flange keeps the bearing positioned axially without extra retaining hardware or circlips.

For inch-dimension shafts in moderate heat

Suits machinery that runs on inch-dimension shafts between 10 and 220 degrees F where a self-lubricating bronze bearing is specified. Not for applications that require sealed rolling-element bearings, higher temperature ratings, metric dimensions or corrosion-resistant alloys beyond standard bronze.

Highlights

  • Self-lubricating SAE 30 oil reduces maintenance needs
  • Bronze construction handles 220°F max operating temperature
  • Flanged design with 1.25 in diameter secures axial positioning
  • 3/4 in bore fits standard shaft dimensions precisely
  • Tight .005 in length tolerance ensures consistent alignment

Specifications

No published specifications for this item yet.

Questions about this item

Will the SAE 30 oil impregnation in the sintered bronze need replenishment over time?

The bearing is self-lubricating with SAE 30 oil impregnated in the sintered bronze; no routine replenishment is required under normal operating conditions.

At what temperature does the 220 °F maximum limit become the constraining factor during continuous duty?

The maximum operating temperature is 220 °F; sustained loads that push the bearing near this limit will restrict further speed or load increases before wear accelerates.

How much heat and noise should I expect when the flanged sleeve runs all day at 220 °F?

At the 220 °F upper limit the bronze material remains stable; self-lubrication minimises friction noise, and the flange design dissipates heat without external cooling.

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