TungHold ER16, 20, and 25 Spring Collets Offer Reduced Collapse Range

Iwaki, June 2021 — In compliance of TungHold collet chuck system with DIN6499/ISO15488 standards, Tungaloy has reduced the collapse range of its ER spring collets from ø1.0 mm to 0.5 mm for the 1.0-2.0 mm size range. This change will affect ER16SPR, ER20SPR, ER25SPR; ER16SPR-AA, ER20SPR-AA, and ER25SPR-AA size collets.

Currently ER-SPR and ER-SPR-AA lines both offer a 1.0 mm collapse range to cover the ø1.0-2.0 mm size range. In the new lineup, the general purpose ER-SPR line offers two sizes: One will cover ø1.0-1.5 mm range and the other will cover ø1.5-2.0 mm. The ultra-precision ER-SPR-AA will provide only one size for the ø1.5-2.0 mm. In regard to the size ranges of ø2.0-3.0 mm and up, the collapse range remains 1.0 mm. Reduced collapse range decreases the collet deformation that occurs when gripping the tool, which reduces runouts and increases the grip.

The new ER16, 20, and 25 spring collets can be used with existing collet chuck holders and clamping nuts.

Total of 9 items have been added.


Product information
No. 389S1-G (Metric)