Germany BOSCH bearings BOSCH models BOSCH prices

BOSCH bearings are bearings that operate under sliding friction. Plain bearings operate smoothly, reliably, and without noise. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil without direct contact, which can greatly reduce friction loss and surface wear. The oil film also has a certain vibration absorption capacity. However, the starting friction resistance is relatively high. The part of the shaft supported by the bearing is called the journal, and the part mating with the journal is called the bearing bush. The anti-friction material layer cast on the inner surface to improve the friction properties of the bearing bush surface is called the bearing lining. The materials of the bearing bush and bearing lining are collectively referred to as plain bearing materials. Plain bearings are generally applied in high-speed and light-load operating conditions.

BOSCH bearing classification

1) Single-row angular contact ball bearings can only withstand axial load in one direction. When bearing radial load, additional axial force will be generated. They can only limit the axial displacement of the shaft or housing in one direction. The contact angle of angular contact ball bearings is 40 degrees, so they can withstand large axial loads. Angular contact ball bearings have a non-separable design, with shoulders of different heights on both sides of the inner and outer rings. To improve the load capacity of the bearing, one side of the shoulder is machined lower, allowing more steel balls to be installed in the bearing. 2) Double-row angular contact ball bearings can withstand combined radial and axial loads and moment loads, mainly radial loads, and limit axial displacement of the shaft in both directions. They are mainly used in components that limit bidirectional axial displacement of the shaft and housing. The tilting capability between the inner and outer rings of double-row angular contact ball bearings is limited. The allowable tilt angle depends on the internal clearance of the bearing, bearing size, internal design, and the forces and moments acting on the bearing. The maximum allowable tilt angle should ensure that no excessive additional stress is generated inside the bearing. If there is a tilt angle between the inner and outer rings of the bearing, it will affect the bearing life, reduce running accuracy, and increase running noise. Double-row angular contact ball bearings generally use nylon cages or brass solid cages. When installing double-row angular contact ball bearings, attention should be paid to the fact that although the bearing can withstand bidirectional axial loads, if one side has a filling slot, care should be taken not to let the main axial load pass through the raceway edge with the filling slot. When using the bearing, care should be taken to let the raceway without the filling slot bear the main load.

BOSCH bearing features

1) Universally matchable bearings. Universally matchable bearings are specially processed. When the bearings are installed close to each other, any combination can achieve the specified internal clearance or preload and average load distribution without using shims or similar devices. Paired bearings are applied when the load carrying capacity of a single bearing is insufficient (using tandem configuration) or when combined loads or axial loads acting in two directions need to be borne (using back-to-back or face-to-face configurations). Basic design bearings (cannot be used as universally matchable) are used for single bearing configurations. Basic design single-row angular contact ball bearings are mainly applied in configurations where there is only one bearing at each position. Their width and protrusion are of normal tolerance class. Therefore, they are not suitable for installing two single-row angular contact ball bearings close to each other.

BOSCH bearing installation

High-speed precision angular contact ball bearings are mainly used in high-speed rotation occasions with light loads, requiring high precision, high speed, low temperature rise, low vibration, and a certain service life. They are often installed in pairs as support components for high-speed electric spindles and are key supporting components for high-speed electric spindles of internal grinding machines. Kuaiyiyou Automation Selection Guide provides selection for angular contact ball bearings. The installation forms of angular contact ball bearings include back-to-back, face-to-face, and tandem arrangements. When installed back-to-back (wide ends of the two bearings facing each other), the contact angle lines of the bearings diffuse along the direction of the rotation axis, increasing the radial and axial support angle rigidity, providing maximum resistance to deformation. When installed face-to-face (narrow ends of the two bearings facing each other), the contact angle lines of the bearings converge towards the rotation axis, resulting in lower support angle rigidity. Since the inner ring of the bearing extends beyond the outer ring, when the outer rings of the two bearings are pressed together, the original clearance of the outer rings is eliminated, which can increase the preload of the bearing. When installed in tandem (wide ends of the two bearings in one direction), the contact angle lines of the bearings are parallel and in the same direction, allowing the two bearings to share the working load in the same direction. However, when using this installation form, to ensure axial stability of the installation, two pairs of tandem-arranged bearings must be installed opposite each other at both ends of the shaft.

Weidou Intelligent Technology professionally sells German BOSCH plain bearings, BOSCH rolling bearings, BOSCH spherical plain bearings, BOSCH deep groove ball bearings, BOSCH angular contact ball bearings, BOSCH self-aligning ball bearings, BOSCH thrust ball bearings, BOSCH double-direction thrust angular contact ball bearings, BOSCH combination bearings, BOSCH thrust roller bearings, BOSCH needle roller bearings, BOSCH insert ball bearings, BOSCH self-aligning roller bearings, BOSCH flanged bearings, BOSCH linear bearings, BOSCH original German imports. Welcome customers to inquire and order.