QA1 MIB12T MIB-T Series Spherical Bearing 3/4" Bore PTFE Lined Low Carbon Steel

The QA1 MIB12T is a commercial-grade MIB-T Series spherical bearing featuring a 3/4-inch bore and a self-lubricating PTFE liner. Part of QA1's MIB-T line, this bearing delivers more wear surface than a traditional COM-series bearing thanks to its increased race width and diameter — extending service life in demanding suspension and linkage applications.

The PTFE liner eliminates the need for periodic lubrication while providing smooth, low-friction articulation. The low carbon steel race is ID-coated for corrosion resistance and oil-coated for added protection, making this bearing well-suited for performance street, circle track, drag racing, and street rod applications.

Ball Construction:

• 52100 bearing steel
• Heat treated for hardness and durability
• Hard chrome plated for surface protection
• Precision ground for tight tolerances

Liner:

• PTFE material
• Self-lubricating — no greasing required

Race Construction:

• Low carbon steel
• I.D. protective coated for corrosion resistance
• Oil coated for additional protection
• Manufacturer's option: heat treated stainless steel

Key Specifications:

• Bore: 3/4 in. (0.750 in.)
• Outer Diameter: 1.500 in.
• Inner Ring Width: 0.875 in.
• Series: MIB-T (PTFE lined)
• Part Number: MIB12T

QA1 has been manufacturing American-made rod ends, spherical bearings, and suspension components since 1993, and the MIB-T Series represents a reliable, cost-effective upgrade over standard commercial bearings for performance and racing applications.