This force density is unmatched in the industry and enables electric actuation solutions that are otherwise not available due to size constraints. The majority of our roller screw customers include the Grooved Roller Bearing in their assemblies.

The Deep Groove Ball Bearing, known as 6316-C3-SKF SKF, has an inner diameter of 80 mm, an outer diameter of 170 mm and a thickness of 39 mm.

The CMC Grooved Roller Bearing (GRB) difference lies in the patented grooved roller and race designs. In order to improve durability, the new design increases the number of contact points in the same physical space. More contact points means longer life and greater load capacity to match the performance of CMC’s roller screws.

The ABEC standard is used to classify bearings according to their machining tolerance. This standard is regularly called into question because it does not include certain technologies that are important for guaranteeing proper operation, both in terms of efficiency and bearing life.123Roulement therefore makes little use of this standard.

We needed a partner who would analyze our applica-tion and provide a custom roller screw and bearing solution that will give us the life we need at a reasonable cost and lead time. CMC took on the challenge and has done an outstanding job.

CMC not only brought an incredible bearing product to the table, but their excellent engineering support enabled a seamless package for our challenging envelope.

Due to the extreme force density, the life of GRBs is five to 10 times the life of the same size angular contact bearing sets. So when you match a GRB to a CMC Roller Screw, you know that you will not have to replace the bearing during the life of the unit.

CMC’s Groove Roller Bearing technology is very impressive. We get a smaller, lighter bearing that handles more load and lasts significantly longer.

This suffix indicates that the bearing is designed for very high operating temperatures. In general, the temperature is indicated after this suffix.Beware, these bearings are not suitable for all applications, and will require a high temperature for optimum service life.

These suffixes mean "with 1 or 2 rubber seals". At 123Roulement, we use the number "2" to specify when the bearing is sealed on both sides.

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The Deep Groove Ball Bearing, known as 6316-C3-SKF SKF, has an inner diameter of 80 mm, an outer diameter of 170 mm and a thickness of 39 mm.

The Deep Groove Ball Bearing, known as 6316-C3-SKF SKF, has an inner diameter of 80 mm, an outer diameter of 170 mm and a thickness of 39 mm.

These suffixes mean "with 1 or 2 sheet metal deflectors", for dust-tightness. At 123Roulement, we specify whether the bearing is sealed on 2 sides with "ZZ".

These suffixes indicate that the cage (the part of the bearing that holds the balls apart) is made of polymer material. Usually made of glass-fiber-reinforced polyamide.

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Means "increased internal clearance". Often referred to as high-speed, this means that the bearing is designed for high rotational speeds and moderately high temperatures. CAUTION: a bearing with increased internal clearance will not operate optimally at low speeds. Please refer to the data sheet for the bearing you are looking for to find out its rotation speed limit.

A stainless steel bearing is generally magnetizable, as it is made from AISI 420 stainless steel, which is harder and more shock-resistant than standard stainless steel (AISI 304).To check whether your bearing is made of stainless steel, simply read the reference engraved on the side of the bearing. This reference should begin with the prefix "S" meaning "Stainless Steel".

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Some bearings are available with more or less important variants (high or low internal clearance, special grease, very high temperature, etc.). These variants are systematically indicated by prefixes and suffixes in the part number.For example, the suffix "2RS" means that the bearing is splash-proof, thanks to a sealing flange on both sides of the bearing.The suffix "C3" means that the bearing has increased internal clearance, and will require a higher operating temperature, or a higher rotation speed.