The ISO tool holder standard is defined by ISO 7388/1, which serves as the international benchmark.
This standard specifies dimensions, tapers, and key performance indicators, playing a critical role in global machining practices.
The ISO taper number corresponds to the large end diameter—for example, sizes 50 and 40 indicate large end diameters of 69.85 mm and 44.45 mm,
respectively. The ISO 50 tool holder is less commonly used compared to other sizes and often requires custom manufacturing,
leading to longer delivery times. It is equipped with an ER nut and ER collet and must be assembled or disassembled using an ISO-compliant
wrench to ensure proper operation and avoid damage.

The ISO 50 tool holder is manufactured from titanium alloy 20CrMnTi, known for its high strength and durability.
After heat treatment, the tool holder achieves a hardness of 58–60 HRC, providing exceptional wear resistance and toughness.
These properties contribute to an extended service life. During operation, it exhibits low noise levels, reduced wind resistance,
and high repeatability in clamping accuracy, making it suitable for high-precision machining applications.

A key feature of this tool holder is its ability to operate at high speeds ranging from 25,000 to 35,000 RPM.
It offers remarkable dynamic balance and stability, making it ideal for specialized equipment such as small CNC machining centers,
engraving machines, and profile milling machines. Made from premium materials and subjected to rigorous heat treatment processes,
the tool holder delivers excellent elasticity, wear resistance, and consistent performance with tight tolerances.
It is designed for high-speed and heavy-duty cutting operations.

These tool holders are available through direct manufacturer wholesale, ensuring high quality at competitive prices.
We welcome inquiries and orders from interested customers.