▶ Products : LM Guide >THK LM Guide >Cross Roller Bearing > Spherical Plain Bearing
 

   - Construction and Features

    Spherical Plain Bearing types SB and SA1 are self-aligning plain bearings for heavy loads.
    The inner and outer rings consist of high-carbon chromium bearing steel, hardened, ground, phosphate-coated,
    and baked with molybdenum disulfide (MoS2).

    The Spherical Plain Bearing can bear large radial loads and bilateral-thrust loads.
    Moreover, as it is highly impact-resistant, this product is suitable for application to low-speed,
    heavy-load rocking components such as the cylinder crevices and hinges of various construction-work and
    civil-engineering machines, truck suspensions, and train bolster anchors.

Type SB

Type SA1

This constitutes the most popular series of its type in Japan. With wide spherical contact areas, type SB is suitable for use as a bearing for heavy loads. The outer ring is split at two points, enabling the inner ring to be accommodated.

This type is popular in Europe. The outer ring is split at one point (at two points in models with an inner diameter of 100 mm or greater). This type is narrower and thinner than type SB, and can therefore be used in small areas. Models with seals on both sides (SA1-UU) are also available. The seals are dust seals that are highly effective in contamination protection.