Bearings, Rod-ends and bearing housings
A mechanical bearing allows for the positioning, conveyance of stress and rotation between two parts by replacing a sliding action with a rolling action. This mechanical component optimises the connection's friction and precision. A ball bearing consists of two coaxial races between which the slightly lubricated balls are placed, and kept spaced apart by means of a cage.
Needle and roller bearings
Needle roller bearings are roller bearings with a rotational movement in which a fine needle roller is incorporated . They have a low cross-sectional height and high load capacity compared to ball bearings. By being small, roller bearings or needle roller bearings help reduce the overall size of the machine, and thus are widely used in various applications such as automobiles, motorcycles, printing presses, industrial robots, and construction equipment.
Spherical plain bearings and rod ends
Spherical plain bearings are compact, self-aligning spherical plain bearings that can support a large radial load and bidirectional axial load at the same time. These bearings are available in insert, die-cast and non-lubricated versions, depending on the type of sliding surface.
- insert type, a spherical inner ring is in contact with a special copper alloy ring with superior running-in properties.
- die-cast type, a spherical inner ring is in direct contact with the bore surface of the special zinc die-cast alloy body.
- maintenance-free type, a spherical inner ring is in contact with a special self-lubricating liner.
Housings are mechanisms used in mechanical construction to support and guide, in rotation, transmission shafts. Depending on the desired use, these housings may be:
- smooth where the shafts resting on the bushings are subjected to sliding friction between the surfaces in contact with one another
- rolling where the contact occurs through balls or rollers contained in cages.
Here rolling friction occurs, allowing for greater charge on the housings and faster rotation speed.