S V Hi-Tech Bearing (India) Private Limited

A ball screw (or ballscrew) is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to recirculate the balls.

Another form of linear actuator based on a rotating rod is the threadless ballscrew, a.k.a. "rolling ring drive". In this design, three (or more) rolling-ring bearings are arranged symmetrically in a housing surrounding a smooth (threadless) actuator rod or shaft. The bearings are set at an angle to the rod, and this angle determines the direction and rate of linear motion per revolution of the rod. An advantage of this design over the conventional ballscrew or leadscrew is the practical elimination of backlash and loading caused by preload nuts.

When tapered roller bearings are being installed, they must be stopped in accordance with the work specifications, or many achievements will not be made.

Tapered roller bearings were a breakthrough at the end of the 19th century because bearings used in wheel axles had not changed much since ancient times.

Tapered roller bearings are specialized roller bearings utilizing a separable cup and cone assembly to offer flexibility in design and installation as well as rigid performance.

Benefits:

• High axial load carrying capacity
• High quality steel - ultra clean steel to extend bearing life up to 80%
• Spherical thrust bearings can accommodate misalignment
• High capacity E design available

In mechanical engineering, a rolling-element bearing, also known as a rolling bearing,^[1] is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two concentric, grooved rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding.

One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls on to it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See "bearings" for more on the historical development of bearings.

A rolling element rotary bearing uses a shaft in a much larger hole, and cylinders called "rollers" tightly fill the space between the shaft and hole. As the shaft turns, each roller acts as the logs in the above example. However, since the bearing is round, the rollers never fall out from under the load.

Other information:

• Needle roller bearings feature a smaller cross-section, higher load-carrying capacity, greater rigidity, and lower inertia forces that facilitate size and weight reductions in machinery
• They’re designed to withstand oscillation, perform under severe conditions, and interchange with sliding bearings
• Diverse types of needle bearings are available in a wide variety of sizes and tolerances, for a multitude of applications
• Needle roller and cage assemblies are offered in single or double row, solid or split cage, metric and inch sizes; as well as in connecting rod bearings for special applications
• Single and double row bearings are available with or without ribs, and with or without inner rings
• Thrust bearings are offered in single row roller and cage assemblies
• Yoke and stud type track rollers are also available

SKF Cylindrical roller bearings are available in a wide range of designs, series, variants and sizes. The main design differences are the number of roller rows and the inner/outer ring flanges as well as cage designs and materials.

The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life. 

Stainless steel deep groove ball bearings are corrosion resistant when exposed to moisture and several other media.

Main applications

Medical apparatus and instruments, marine, cryogenic engineering, optical instrument, high-speed machine, high-speed electric machinery, printing machinery, food equipment.

Features:

• Rigid construction
• Corrosion resistance
• Easy installation

Axial cylindrical roller bearings combine axial cylindrical roller and cage assemblies, housing locating washers and shaft locating washers. The bearings have very low axial section height, high load capacity, high rigidity and can support axial forces in one direction.

Passive magnetic bearings rely on permanent magnets for stable levitation without external power or control systems.

They’re effective but can't adjust autonomously, making them less versatile than their active counterparts. Active magnetic bearings use electromagnets and require continuous power and a control system to maintain rotor stability.

For enhanced stability, designs often combine both types: permanent magnets bear the static load, while active bearings adjust when deviations occur. Typically, a backup bearing ensures safety if power or system failures arise.

Metric roller bearing housings are designed to accommodate roller bearings in metric sizes. These housings are crucial for ensuring that the bearings fit properly and function efficiently within machinery. They provide a stable and secure mounting point for the bearings, allowing for smooth rotational motion and the distribution of loads.

A slewing drive is a gearbox designed to handle radial or axial loads using high rotational torque. It can safely hold these loads without the need for brakes and can transmit torque for rotating in a single axis or multiple axes together. The slewing drive is a modernized version of the worm drive mechanism