Drill chuck manufacturer’s coding

Drill chuck manufacturer’s coding

This topic has 1 reply, 2 voices, and was last updated 30 July 2026 at 15:18 by JasonB.

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30 July 2026 at 14:48 #858541
Bill Phinn
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@billphinn90025
Can anyone confirm what version of a Bison drill chuck we’re looking at in the picture? There are two versions, afaik, of Bison 1-13mm J6 keyless drill chucks:

5133-13J6 KL.I

5133-13J6 KL.II

I ordered the (more expensive) first of these (from a long established UK supplier), but received the chuck pictured.

I cannot see any Bison literature explaining the coding I have on mine and which of the two chucks above it is supposed to be.

Any help appreciated.
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30 July 2026 at 15:18 #858552
JasonB
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@jasonb
Page 58 lists two types of the 5133 chucks Precision & Standard, I know what I would bet on the P that is on your chuck standing for and I expect the precision one costs more than standard

https://bison-chuck.com/wp-content/uploads/2021/09/Spindle_Tooling_and_Quickchange_Toolposts.pdf
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