The Deep Groove Ball Bearing, known as 6004-ZZ-C3 Generic, has an inner diameter of 20 mm, an outer diameter of 42 mm and a thickness of 12 mm.

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.

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.

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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".

The installation was well documented. The pictures and instructions were clear. It helped to align the mounts with the holes with the soft plus and clips inserted before locating the pinch weld hole locations. They are sturdy and well made.

Order was processed quickly and when a change was made by me it was taken care of immediately. Extension package was very well wrapped. Only complaint was, there were no directions, although once figured out went together easily.

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The Deep Groove Ball Bearing, known as 6004-ZZ-C3 Generic, has an inner diameter of 20 mm, an outer diameter of 42 mm and a thickness of 12 mm.

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.

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.

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".

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.

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.

We were looking for a solution to have a more confident step into our campervan. The cost to buy wider running boards was prohibitive. I searched and searched for a solution and found these brackets. They are perfect. I would highly recommend them. Before and after picture!

The Deep Groove Ball Bearing, known as 6004-ZZ-C3 Generic, has an inner diameter of 20 mm, an outer diameter of 42 mm and a thickness of 12 mm.