<p>LEGO and others sometimes calls those pieces <a href="https://brickset.com/parts/448826/bearing-element-2x2-single" rel="noreferrer">a "bearing element"</a>. This term however <a href="https://brickset.com/parts/4211778/bearing-element-3x6" rel="noreferrer">is not limited to just that axle</a>.</p>

<p>LEGO's replacement parts service calls the holes they go into "HOLE Ø11" (possibly read "Hole Diameter 11"):</p>

<p><a href="https://i.sstatic.net/GAvCgm.png" rel="noreferrer"><img src="https://i.sstatic.net/GAvCgm.png" alt="HOLE Ø11"></a></p>

<p>The width of the axle is roughly equivalent to the width of a "bar", like <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=30374#T=C" rel="noreferrer">the 30374 piece</a> used for Lightsabers as such.</p>

<p>None of these names are particularly satisfactory, but I'm not aware of any better names.</p>

CC BY-SA 3.0
2017-10-05T22:09:37.297Z
Thanks. Is "Ø" a way of writing zero, or does it mean something else?
EJ Mak
CC BY-SA 3.0
2017-10-05T22:37:55.290Z
See https://bricks.stackexchange.com/questions/8060/%C3%98-in-lego-part-names?rq=1 for an explanation on the diameter symbol.
Phil B.
CC BY-SA 3.0
2017-10-06T14:50:54.530Z
And is "W" an abbreviation for the word "with?"
EJ Mak
CC BY-SA 3.0
2017-10-06T15:44:28.543Z
@EJMak I assume so, yes.
Alexander O'Mara
CC BY-SA 3.0
2017-10-05T22:05:25.033Z
2017-10-05T22:15:38.103Z
2017-10-05T22:15:38.103Z
Alexander O'Mara
<p>I see that there are at least three different types of axles that can be used with LEGO wheels. I can name the first two — <em>Technic axle</em> and <em>Technic pin</em> — but I cannot name the third, which is like a Technic pin, but smaller.</p>

<p>Note that I've only seen it integrated into a larger part, such as a brick or plate, as shown in the image. I see that BrinkLink sometimes refers to parts like this as having "wheels holder" pins, but that seems to be a term that could apply to the first two types of axles as well.</p>

<p>Does a common and more precise name exist for this type of pin? </p>

<p><a href="https://i.sstatic.net/lOMt9.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/lOMt9.jpg" alt="Image of Lego element from brickset.com"></a></p>

<piece-information><terminology><wheel>
What is the name of the small pins that are used with small wheels / rims?
EJ Mak
# What is the name of the small pins that are used with small wheels / rims?

(Asked by: username_0 on 2017-10-05)

I see that there are at least three different types of axles that can be used with LEGO wheels. I can name the first two — *Technic axle* and *Technic pin* — but I cannot name the third, which is like a Technic pin, but smaller.

Note that I've only seen it integrated into a larger part, such as a brick or plate, as shown in the image. I see that BrinkLink sometimes refers to parts like this as having "wheels holder" pins, but that seems to be a term that could apply to the first two types of axles as well.

Does a common and more precise name exist for this type of pin?

[![Image of Lego element from brickset.com](https://i.sstatic.net/lOMt9.jpg)](https://i.sstatic.net/lOMt9.jpg)

**Tags:** piece-information, terminology, wheel


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## 1 answers

### Answer by username_1 on 2017-10-05. Score: 6 | Accepted answer

LEGO and others sometimes calls those pieces [a "bearing element"](https://brickset.com/parts/448826/bearing-element-2x2-single). This term however [is not limited to just that axle](https://brickset.com/parts/4211778/bearing-element-3x6).

LEGO's replacement parts service calls the holes they go into "HOLE Ø11" (possibly read "Hole Diameter 11"):

[![HOLE Ø11](https://i.sstatic.net/GAvCgm.png)](https://i.sstatic.net/GAvCgm.png)

The width of the axle is roughly equivalent to the width of a "bar", like [the 30374 piece](https://www.bricklink.com/v2/catalog/catalogitem.page?P=30374#T=C) used for Lightsabers as such.

None of these names are particularly satisfactory, but I'm not aware of any better names.

> **Comments:**
> **username_0**: Thanks. Is "Ø" a way of writing zero, or does it mean something else?  
> **username_2**: See https://bricks.stackexchange.com/questions/8060/%C3%98-in-lego-part-names?rq=1 for an explanation on the diameter symbol.  
> **username_0**: And is "W" an abbreviation for the word "with?"  
> **username_1**: @EJMak I assume so, yes.  

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