ER11 collets for China spindles

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Greg @GregoryG, hey RD, hey all,

@RD-Oregon

thanks, I’ll hunt for a 7mm collet for a ER-11

at my cnc supplier, besides a collet for a 6 mm bit shank and one for a 7 mm bit shank, you get one for 6.5 mm. That fits 0.25" bit shanks (in case you would use U.S. bits). Some ER collets manufacturers also offer both imperial and metric collets.

• 13 pcs Collet Set ER 11, Industry Quality DIN 6499B class II, Concentricity: 0.003 … 0.015mm
• ER 11 collets Industry Quality DIN 6499B class II, Concentricity: 0.015 mm

Further information

• Is the collet size a plus x or a minus x number? – Haas Automation

@RD-Oregon

Is there any chance of a ER16 upgrade that will mount on the spindle?

No. If it is no ATC spindle, if you want ER 16, you need to buy a spindle for ER 16 collets. On ATC spindle like these or these it is possible to buy tool holders for different ER collet sizes and use them with the same spindle, but here you would also try to select a spindle which has the ISO or the HSK tool holder size (ISO20, ISO30, etc.) that fits your favourite ER collet size well.