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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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.

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.

The Deep Groove Ball Bearing, known as 6304-C3-NTN NTN, has an inner diameter of 20 mm, an outer diameter of 52 mm and a thickness of 15 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.

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All machinery orders include free 1st class signed for delivery. Unless you're ordering from outside UK mainland of which a delivery price will be presented to you on checkout. All spare part orders will be sent out using 1st class delivery. Unless you're ordering from outside UK mainland of which a delivery price will be presented to you on checkout. All machinery orders between Monday - Thursday and before 2pm will be processed and despatched the same day, aiming for next day delivery. This applies to spare parts. Should any spare part be out of stock or a special order item, you'll be contacted accordingly to see how you want to proceed with your order. Orders placed outside the Monday - Thursday before 2pm timeframe will be processed the same day but aim to ship this item to you the next working day. There're many spares parts that can quickly become obsolete or temporally unavailable and we aim to keep our database as up to date as possible. Every care is taken to ensure your order reaches you safely, and in a timely manner. Standard Delivery For Machinery FREE delivery on all machinery orders. This service use FedEx, Parcelforce, TNT, UK MAIL, Palletways, UPS, Royal Mail and APC delivery serivices withing the UK. Only available in the UK mainland. DG, TD, EH, ML, KA, G, FK, KY, PA, PH, DD, AB, IV, KW shipping postcodes may incur additional shipping charges. Spare Parts 1st class UK delivery - £7.49 + VAT (Inc packing) in 1 - 3 working days A signature is required for delivery on machinery orders.

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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".

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.

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.

The Deep Groove Ball Bearing, known as 6304-C3-NTN NTN, has an inner diameter of 20 mm, an outer diameter of 52 mm and a thickness of 15 mm.

The Deep Groove Ball Bearing, known as 6304-C3-NTN NTN, has an inner diameter of 20 mm, an outer diameter of 52 mm and a thickness of 15 mm.

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.