Deep groove ball bearings

No bearing type shows up in industrial machinery more often than the deep groove ball bearing. A single row of balls runs in deep raceways, so the bearing carries radial load plus axial load in either direction, and it turns at high speed with little friction. Electric motors, pumps, fans, conveyors, machine tools and drive equipment all use them. You select one by bore, outside diameter and width, and by closure: open, shielded (Z, ZZ) or with contact seals (RS, 2RS).

Read the designation from left to right. The leading digits give the series and the final two are the size code; from 04 upward, multiply that code by 5 to get the bore in millimeters. That is why NSK's 6052 and 6252, in the 60 and 62 series, both have a 260 mm bore, and FAG's 16004, series 160, has a 20 mm bore. Large sizes put the bore after a slash, as in NTN's 68/500, which has a 500 mm bore. Timken organizes its range by series: series 6000, series 61000 and series 62000-63000.

Suffixes carry the rest. 2Z means two shields, 2RS means two contact seals, and C3 means internal clearance greater than normal, which helps with temperature differences or tight fits. Some SKF part numbers also carry a line prefix, for example PER.6310-2RSTFPC4F7 or MRC.7310PJDU. In dusty or wet areas go with seals; at high speed, shields.

We carry SKF, NSK, FAG, NTN and Timken deep groove ball bearings. To get a quote, send the full part number with every suffix, or the bore, outside diameter and width along with the closure. Have an equivalent from another brand? We will cross-reference it. Request a quote by WhatsApp or email and we will get back to you promptly.