Tililt

What are the dimensions of a 6011 bearing?

Answer 55 × 90 × 18 mm

The 6011 is a deep-groove ball bearing: 55 mm bore, 90 mm outside diameter, 18 mm wide.

How it is worked out

  1. Type6 → deep-groove ball bearing
  2. Series60 → series 60 · extra-light · dimension series 10
  3. Bore code11 → 11 × 5 = 55 mm

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

Worth knowing

In inches
2.165 × 3.543 × 0.709 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 6011-2RSH or -2RS1, FAG 6011-2RSR, NSK 6011DDU, NTN 6011LLU.
ZZ · 2Z · 2ZR
Metal shield on both sides. Less friction and more speed than a seal, but not watertight. SKF 6011-2Z, FAG 6011-2ZR, NSK and NTN 6011ZZ.
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 6011 from any maker fits the same shaft and housing. Seals, cage, clearance and quality are what differ.

Other bores in the 60 series

Same 55 mm bore, other series

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.

Keep it on the wall

This answer is one row of the printable bearing size chart — one A4 or Letter page, free, no sign-up.

Get the next chart before it's on the site

The Shop Sheet, once a month: one new printable chart, and one standards gotcha that catches people out — the kind of wrong number a forum thread or an AI answer gives with total confidence. No sales emails.