Haimer Power Collet Chuck ER 32, oversize, HSK-A125 Tool Holder A125.022.32.3.I (0839969)

Haimer Part Number: A125.022.32.3.I

HAIMER is a global leader in tool holding, balancing, and presetting technology. Founded in 1977 and headquartered in Igenhausen, Germany, HAIMER offers premium shrink fit chucks, tool balancing machines, and precision tool holders trusted in high-performance machining environments worldwide.

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).

Product Features:

- Power Collet Chuck, DIN 69893-1, HSK-A125

- Chuck body fine balanced G2.5 at 25.000 rpm or U < 1 gmm

- All functional surfaces fine machined

- More accurate than DIN

- For clamping tools with cylindrical shank in HAIMER Power Collets and ER collets according to ISO 15488.

- The Power Collet Chuck is the collet chuck for the highest machining capacity in high-speed manufacturing. The optimized design with improved construction combines high rigidity with vibration damping, therefore giving more protection to machines, spindles and cutting tools. The universal Power Collet Chuck is a unique high performance chuck that can also be used with standard collets.

- High runout accuracy: 0.003 mm at 3 × D with HAIMER Power Collets

- Also suitable for standard collets ER according to ISO 15488 (Please note when use with standard ER collets the gage length A will vary.)

- High rigidity

- Smoother running thanks to vibration absorbing geometry, therefore better surface quality and protection of tools, spindles and machines

- Increased machining capacity due to higher spindle speeds, higher feed rates and larger cutting depths

- Shorter processing times, higher machining accuracy, high clamping force

- Equally suited to high-speed manufacturing and heavy milling

- With threaded holes in order to balance with balancing screws

- Optional: With Safe-Lock Power Collets

- Cool Jet bores on Power Collets

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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:

Family-owned since 1977, HAIMER has grown from a precision parts specialist into a global tooling solutions supplier with operations across Europe, North America, and Asia.