Tililt

What are the dimensions of a 6203 bearing?

Answer 17 × 40 × 12 mm

The 6203 is a deep-groove ball bearing: 17 mm bore, 40 mm outside diameter, 12 mm wide.

Change the numbers →

How it is worked out

  1. Type6 → deep-groove ball bearing
  2. Series62 → series 62 · light · dimension series 02
  3. Bore code03 → 17 mm (fixed by the standard)

d = bore code × 5 mm (04+) · 00 = 10 · 01 = 12 · 02 = 15 · 03 = 17 mm

Worth knowing

In inches
0.669 × 1.575 × 0.472 in. A metric bearing: inch-series bearings (R8, 1600…) do not fit the same shaft.
2RS · 2RS1 · 2RSH · DDU · LLU
Rubber seal on both sides, greased for life. Best against dirt and water, slightly more drag. The same bearing by brand: SKF 6203-2RSH or -2RS1, FAG 6203-2RSR, NSK 6203DDU, NTN 6203LLU.
ZZ · 2Z · 2ZR
Metal shield on both sides. Less friction and more speed than a seal, but not watertight. SKF 6203-2Z, FAG 6203-2ZR, NSK and NTN 6203ZZ.
RS · Z
Seal (RS) or shield (Z) on one side only, the other side open: for bearings fed oil or grease by the machine.
C3
Internal clearance larger than normal. Standard on electric motors and wherever the shaft runs hot or the fit is tight. Replace a C3 with a C3.
Interchangeable?
Yes. ISO 15 fixes the bore, outside diameter and width, so a 6203 from any maker fits the same shaft and housing. Seals, cage, clearance and quality are what differ.

Other bores in the 62 series

620010 × 30 × 9 mm620112 × 32 × 10 mm620215 × 35 × 11 mm620420 × 47 × 14 mm620525 × 52 × 15 mm620630 × 62 × 16 mm620735 × 72 × 17 mm620840 × 80 × 18 mm620945 × 85 × 19 mm621050 × 90 × 20 mm621155 × 100 × 21 mm621260 × 110 × 22 mm621365 × 120 × 23 mm621470 × 125 × 24 mm621575 × 130 × 25 mm621680 × 140 × 26 mm621785 × 150 × 28 mm621890 × 160 × 30 mm621995 × 170 × 32 mm6220100 × 180 × 34 mm

Same 17 mm bore, other series

680317 × 26 × 5 mm690317 × 30 × 7 mm600317 × 35 × 10 mm630317 × 47 × 14 mm

Do it with your own numbers

Got a number off a bearing with suffixes on it? Paste it into the bearing number decoder: it reads the whole designation, seals and clearance included.

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