Haimer Power Collet Chuck ER25, short, CAT50 Tool Holder 50.720.25.3 (0836930)

Haimer Part Number: 50.720.25.3

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, ASME B5.50 · CAT50

- Chuck body fine balanced G2.5 at 25.000 rpm

- All functional surfaces fine machined

- Taper tolerance AT3

- Coolant supply form AD/AF

- The Power Collet Chuck is designed for the highest cutting performance in High Speed machining. 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 0.00012" (3 µm) at 3 x D with HAIMER Power Collets

- Also for standard Collets ER according to ISO 15488 (formerly DIN 6499) (Attention: By using standard collet, ER length A will increase)

- High rigidity

- Runs smoother thanks to vibration absorbing geometry, yielding better surface finish and increased tool, spindle and machine protection

- Highest cutting performance with higher spindle speeds, higher feeds and larger cutting depths

- Shorter cycle times, higher machining accuracy, higher clamping forces

- Equally suited to High Speed and dynamic machining

- With threaded holes in order to balance with balancing screws

- Optional with Safe-Lock Power Collets from ER 25

- Optional Cool Jet bores on Power Collets from ER 25 Ø 6 mm

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Background Information:

The CAT system utilizes a proven 'fast taper' (7:24) self-releasing format and is common among American machine tools. Note that ISO, CAT, BT, and SK are NOT interchangeable even though they use the same basic taper!.

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.