Deep groove ball bearings

Deep groove ball bearings are the most widespread type in industrial machinery. They have a single row of balls in deep raceways, support radial load and also axial load in both directions, and rotate at high speeds with low friction. They are used in electric motors, pumps, fans, conveyors, machine tools and transmission equipment. They are selected by bore diameter, outside diameter and width, and by the type of closure: open, with shields (Z, ZZ) or with contact seals (RS, 2RS).

The designation is read from left to right. The first digits indicate the series, and the last two are the size code: multiplied by 5 they give the bore in millimeters from 04. Thus, 6052 and 6252 from NSK, of series 60 and 62, have 260 mm bore, and 16004 from FAG, of series 160, has 20 mm. In large sizes the bore is written after the slash, as in 68/500 from NTN, with 500 mm bore. Timken groups by series, such as series 6000, series 61000 and series 62000-63000.

Suffixes complete the information: 2Z indicates two shields, 2RS two contact seals and C3 a greater internal clearance than normal, useful when there are temperature differences or tight fits. Some codes have line prefixes, such as PER.6310-2RSTFPC4F7 or MRC.7310PJDU in SKF. If there is dust or moisture, sealed closure is advisable; if speed is high, shields.

The brands we work with in this subcategory are SKF, NSK, FAG, NTN and Timken. To request a quote, send us the complete code with all suffixes, or the bore, outside diameter and width along with the closure. If you have the equivalent from another brand, we cross-reference it. Request a quote by part number at MR via WhatsApp or email and we will respond promptly.