Wheel bearings, Bearings for hybrid and electric engines, Bearings and rollers for engines and accessories, Gearbox bearings, Clutch release bearings, Suspension strut bearings, Constant-Velocity joints, Composite bearings, Modules. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

The bearing unit is a combination of a radial ball bearing, seal, and a housing of high-grade cast iron or pressed steel, which comes in various shapes.

The outer surface of the bearing and the internal surface of the housing are spherical, so that the unit is self-aligning. " Our expertise in the Ball Bearing units market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Single row deep groove ball bearings are the most widely used roller bearing type in the world due to their versatility and overall performance.
They are characterized by having deep raceway grooves in which the inner and outer rings have circular arcs of slightly larger radius than that of the balls. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Motor bearings are of high importance in drive systems, so their selection and handling should be taken seriously. Rolf Hoppler and Reinhold Errath evaluate the types of bearings used in the cement industry, offering their hints and tips for avoiding problems with lubrication, greasing, motor cabling, installation, alignment, bearing currents, temperature and vibration. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Oil seals often called grease, fluid or dirt seals are vital components of practically every type of machine and vehicle in operation. These seals fulfill an exacting function – they protect all types of precision constructed, close fitting ball, sleeve and roller bearings.

The function of the oil seal is to stop whatever fluid is inside from leaking out the clearance between the shaft and housing. The seal may also be used to prevent outside materials, such as dirt, from moving in through the clearance. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Cylindrical thrust roller bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing.

Available with cylindrical or spherical rollers, thrust roller bearings sustain only axial loads, but they are suitable for heavy loads and have high axial rigidity. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Thrust ball bearings, composed of bearing balls supported in a ring, can be used in low thrust applications where there is little axial load.

A thrust bearing is a particular type of rotary bearing. Like other bearings they permit rotation between parts, but they are designed to support a predominately axial load. Thrust bearings come in several varieties. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Tapered roller bearings have tapered inner and outer ring raceways as well as tapered rollers. They are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.

The projection lines of the raceways meet at a common point on the bearing axis to provide a true rolling action and therefore low frictional moments during operation. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. ... Like all bearings, they are used to reduce the friction of a rotating surface. Needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length.

The modified roller/raceway profile prevents stress peaks to extend bearing service life. Robel supplies needle roller bearings in many different designs, series and in a wide range of sizes, which make them appropriate for a wide variety of operating conditions and applications. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

A spherical roller bearing is a rolling-element bearing that permits rotation with low friction, and permits angular misalignment. Typically these bearings support a rotating shaft in the bore of the inner ring that may be misaligned in respect to the outer ring.
Spherical roller bearings have two rows of rollers, a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis. The centre point of the sphere in the outer ring raceway is at the bearing axis.

Therefore, these bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. Spherical roller bearings are designed to accommodate heavy radial loads, as well as heavy axial loads in both directions. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Slewing bearings are large size rolling bearings that can accommodate axial, radial and moment loads acting either in single or in combination or in any direction. They can perform both slewing movements as well as rotational movements. Slewing Ring Bearing consists of: ... Rolling elements – balls/cylindrical rollers.

The slewing drive is a gearbox that can safely hold radial and axial loads, as well as transmit a torque for rotating. The rotation can be in a single axis, or in multiple axes together. Slewing drives are made by manufacturing gearing, bearings, seals, housing. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Sleeve bearings deteriorate under high temperatures because they are made from porous, powered metals in a sintering process. ... If an engineer does not need precision parts, sleeve bearings are an alternative.

Sleeve Bearing is a machine bearing in which the axle or shaft turns in a sleeve that is often grooved to facilitate distribution of lubricant to the bearing. Adapter sleeves are the most commonly used components for locating bearings with a tapered bore onto a cylindrical seat as they can be used on shafts. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. ... The bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.

The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from one raceway to another, and a line perpendicular to the bearing axis " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

Miniature bearings are sometimes referred to as instrument bearings or micro bearings.

Robel Bearings maintains a huge selection of miniature bearings and precision ball bearing products ready to ship. We also maintain an extensive inventory of superior quality bushings, rod ends, roller and linear bearings, spherical plain bearings, and custom cost efficient sub-assembly products.

What's more, through our worldwide factory network, we can solve your specific product application needs quickly, cost effectively, and with the highest quality levels. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

A pillow block, also known as a plummer block or housed bearing unit, is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories. Housing material for a pillow block is typically made of cast iron or cast steel.

SNL and SE plummer block housings are the most popular bearing housings on the market, developed to be the first choice for design, quality and economy.

SE plummer block housings are a new generation with a number of new features and a stronger material grade. They are available from size 507 up to and including 515-612. SNL and SE plummer block housings enable the incorporated bearings to achieve maximum service life with less need for maintenance. Different housing variants and seal designs are available, making the use of tailored housings virtually unnecessary and enabling costeffective bearing arrangements to be made. " Our expertise in the bearings market is complemented by our desire for challenges, rigour and working closely with our customers. Our dynamics proximity emphasises listening and personal advice. "

When a bearing must perform under demanding conditions, the lubricant selection becomes critical. Lubrication will affect life, torque, speed, noise, grease migration out gassing, temperature and rust prevention of the bearing.

Ball Bearing Lubricant Types
Two basic types of lubricants available are oil and grease. Applications that require extremely low torque or narrow range of torque variation are suited to use oil as a lubricant. Depending on the application, it is possible that an oil lubricant may not meet a specific requirement. Grease is an oil to which a thickener has been added.

Oil
Oil is the basic lubricant for ball bearings. Previously most lubricating oil was refined from petroleum. Today, however, synthetic oils such as diesters, silicone polymers, and fluorinated compounds have found acceptance because of improvements in properties. Compared to petroleum base oils, diesters in general have better low temperature properties, lower volatility, and better temperature/viscosity characteristics. Silicones and fluorinated compounds possess even lower volatility and wider temperature/viscosity properties.

Grease
Grease is an oil to which a thickener has been added to prevent oil migration from the lubrication site. It is used in situations where frequent replenishment of the lubricant is undesirable or impossible. All of the oil types mentioned here can be used as grease bases to which are added metallic soaps, synthetic fillers and thickeners. The operative properties of grease depend almost wholly on the base oil. Other factors being equal, the use of grease rather than oil results in higher starting and running torque and can limit the bearing to lower speeds. Grease additives include rust inhibitors, extreme pressure additives (EP), oxidation preventatives, etc. Because of the wide variety and complexity of additives, the characteristics of similar greases change considerably from one manufacturer to another. " We can offer industrial and general purpose greases of all brand with complete lubrication solutions. "