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Five bronze cylindrical sleeve bearings with 8 mm bore and 12 mm outside diameter

Bunting Bearings

Bunting Bearings CBM008012008 Bronze Sleeve Bearing 8 mm Bore 12 mm OD 8 mm Length PK5

SKU CH-GW34-QDK18

Bronze sleeve bearing with 8 mm bore, 12 mm OD and 8 mm length in a pack of five

  • Bronze construction resists wear with C93200 (SAE 660) alloy
  • Operates from -450 °F to 500 °F for extreme environments
  • Metric 8 mm bore fits standard 12 mm housings
  • ±0.12 mm length tolerance ensures precise alignment
  • Pack of five bearings supports multiple installations

Bunting Bronze Sleeve Bearing 8 mm Bore

This Bunting bronze sleeve bearing fits an 8 mm bore and measures 12 mm outside diameter by 8 mm length. It comes in a pack of five and suits machinery that needs a simple plain bearing. The material grade is C93200, also known as SAE 660 cast bronze.

Sustained load behaviour up to 500 Degrees F

Cast bronze handles continuous duty without the rapid wear seen in polymer bushings. The alloy tolerates temperatures from -450 Degrees F to 500 Degrees F, so thermal cycling does not degrade the bearing surface. Lubrication grooves are not present, so regular oiling or greasing is required for long life.

Press-fit installation and common issues

The bearing is pressed into a housing that matches the 12 mm outside diameter within the stated tolerance of +/- 0.12 mm. A misaligned press or undersized housing causes binding or premature wear. California Proposition 65 warnings apply because the bronze contains listed chemicals.

Highlights

  • Bronze construction resists wear with C93200 (SAE 660) alloy
  • Operates from -450 °F to 500 °F for extreme environments
  • Metric 8 mm bore fits standard 12 mm housings
  • ±0.12 mm length tolerance ensures precise alignment
  • Pack of five bearings supports multiple installations

Specifications

No published specifications for this item yet.

Questions about this item

Does the bronze material handle continuous high-temperature operation without excessive wear?

The C93200 cast bronze sleeve bearing is rated for a maximum temperature of 500 degrees F and a minimum of -450 degrees F, so it tolerates sustained heat cycles well.

What shaft diameter and tolerance must I already have for these 8 mm bore bearings to fit correctly?

They are designed for an 8 mm bore with a length tolerance of +/- 0.12 mm; ensure your shaft matches that metric size for proper clearance.

Will these metric bronze bearings work alongside older imperial shafting or housings in the same assembly?

The bearings use a metric system of measurement with a 12 mm outside diameter and 8 mm bore, so they are not directly interchangeable with imperial dimensions.

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