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Deep groove ball bearings are versatile, self-retaining bearings. These bearings, which are of simple design, robust in operation and easy to maintain, are available in single row and double row designs and in open and sealed variants.Single row deep groove ball bearings are the most frequently used type of rolling bearing. They are produced in numerous sizes and designs and are particularly economical. Due to their very low frictional torque, open bearings are suitable for high and very high speeds. Bearing designs with gap seals are suitable for high speeds.Single row deep groove ball bearings are only suitable for compensating static misalignments to a very limited extent. As a result, the bearing positions must be well aligned.Double row deep groove ball bearings correspond in their structure to a pair of single row deep groove ball bearings but have two raceway grooves, each with one row of balls. Due to the larger number of rolling elements, they can be subjected to higher loads than single row deep groove ball bearings.Double row bearings are used where the load carrying capacity of single row deep groove ball bearings is not sufficient. Since the bearings can also support loads due to tilting, they are suitable for particularly short shafts that are supported by only one bearing.

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.

The Deep Groove Ball Bearing, known as 6003-ZZ-NR-2AS-NTN NTN, has an inner diameter of 17 mm, an outer diameter of 35 mm and a thickness of 10 mm.

The Deep Groove Ball Bearing, known as 6003-ZZ-NR-2AS-NTN NTN, has an inner diameter of 17 mm, an outer diameter of 35 mm and a thickness of 10 mm.

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".

The Deep Groove Ball Bearing, known as 6003-ZZ-NR-2AS-NTN NTN, has an inner diameter of 17 mm, an outer diameter of 35 mm and a thickness of 10 mm.

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.

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 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.

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

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.

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