Rego-Fix HSK-A 32/ER 20 x 060 Tool Holder 2532.12020 (0645973)

Sale price$299.00
Not in stock - Available to order


OEM SKU: 2532.12020

Rego-Fix is a leading tool holder brand based in Switzerland since 1950.

This product is priced singly and comes in packs of 1.

Please note that the actual item may not be/look exactly the same as shown in the item picture(s).

Name Rego-Fix HSK-A 32/ER 20 x 060 Tool Holder 2532.12020
EDP # 0645973
Weight (1 pc.) 7.0 oz 200 g
Projection 2.3640" 60.000 mm
Nose Diameter 1.3396" 34.000 mm
Total Indicated Runout (TIR) 0.0001" 0.003 mm
Coolant-thru Capable Yes
Maximum RPM 60000

Product Features:

- Balanced to 60.000 RPM

- 0.0001" TIR

- Includes Hi-Q Nut

- High Vibration Damping

- Manufactured in Switzerland

Technical Reference Files:

PDF Drawing

DXF Profile


Background Information:

The HSK system was invented in Germany in the 1990's and is now very commonly found in European machine tools and spindles. HSK stands for "Hohl Shaft Kegel" - "Hollow Shank Taper", and as the name implies this type of interface has a cavity running through it. Unlike classical 'pull-stud' designs (CAT, BT, SK etc), HSK uses an internal drawbar mechanism which results in clamping force increasing with rotational speed. Additionally, the form features dual contact; on an axial face and the cone (1:10), which puts HSK in the upper echelons of tool holder performance.

The HSK-A form is probably the most common in the HSK family, and features drive slots which serve both to increase torque capability and provide rotational indexing (unequal slots). External features provide an interface for automatic tool change grippers and carousels. There is a bore milled directly into the side of the interface for RFID chip placement, and a threaded internal passage for coolant-through operation.

The ER tool holder system was invented by Fritz Weber, founder of Rego-Fix, and released in 1972. The ER-type system was originally used as a broom head to handle interface! The R in "ER" stands for Rego-Fix, and represents the company's modification to common "E" collet design of the early 20th century. Specifically, the modification was adding a groove to the collet which keeps it captive in the nut while installing/removing; eliminating the problem of collets getting stuck in the holders. Upon patent expiry the system was standardized in 1993 under DIN 6499 and is today the most recognizable and commonly used collet system worldwide.

The classic ER interface, tried and true.

Company History:

The beginning of what has become Rego-Fix was Fritz Weber founding "Fritz Weber Feinmechanik und Werkzeugbau" in Reigoldswil, Switzerland in 1950. His first serially manufactured product was a broomholder; a humble origin that has shaped the company's history for many years. By 1955 the company employed 15 people and began to venture into toolmaking, and by 1970 also had become a successful brand in cheese cutting, as well as yoghurt and gas bottling machines. In 1972 Rego-Fix invented the ER machine collet system, the innovation which would make the company world-renown. Interestingly, the mechanism for the ER collet system had been used in broom handles from the beginning, but the application to machine tools was much more important. Tool holding technology was continuously developed by the company since that moment, and has produced an additional revolutionary system, PowRgrip. Today Rego-Fix is recognized at the top level of premium brands in the machining industry.

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