KURATATools-Leading Manufacturer of High-Precision Clamping Systems
KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.
KURATA TOOLS - Leading Manufacturer of High Precision Clamping Systems. Discover How We Help



The SK 50 tool holder is a premium spindle tooling solution designed for high-precision machining applications. Manufactured with superior materials and advanced production processes, the SK50 collet holder ensures stable performance, maximum clamping force, and long service life. This SK50 CNC tool holder is compatible with a wide range of milling and machining centers, offering versatility and reliability for demanding industrial tasks.

The SK 50 tool holder is engineered with tight tolerances to maintain minimal runout during high-speed operations. The precision design ensures consistent tool positioning, enhancing machining accuracy and surface finish quality.
Equipped with a high-quality collet system, the SK50 collet holder provides strong and secure clamping for various cutting tools. This ensures stability even under heavy loads and high-speed rotations, reducing tool slippage and vibration.
Constructed from hardened steel and treated with advanced surface coatings, the SK tool holder resists wear, corrosion, and deformation. This durability guarantees a longer lifespan and reduces downtime in production environments.
The SK50 CNC tool holder supports a wide range of tool types including end mills, drills, reamers, and face mills. Its standardized SK50 taper makes it compatible with most CNC machines and machining centers.
CNC Machining – Precision milling, drilling, and boring operations.
Mold & Die Manufacturing – Stable and reliable tool holding for complex mold components.
Aerospace Industry – High-precision tool positioning for aerospace-grade materials.
Automotive & Heavy Machinery – Efficient high-speed machining of metal parts.
High-Precision Taper Fit – Reduces runout and ensures consistent performance.
Strong Clamping Force – Secures cutting tools firmly to prevent slippage.
Durable Construction – Hardened steel with wear-resistant coating.
Wide Compatibility – Fits multiple CNC machine brands and tool types.
Reliable Performance – Maintains accuracy under heavy-duty industrial operations.
| Feature | Specification |
|---|---|
| Taper | SK50 |
| Material | Hardened Steel |
| Surface Finish | Black Oxide / Precision Ground |
| Runout | ≤0.005 mm |
| Compatible Collet | ER32, ER40 (optional) |
| Max Speed | Up to 8000 RPM |
| Weight | Approx. 1.2 kg |
Aerospace Manufacturing
Automotive Parts Production
Mold and Die Making
Heavy Machinery Components
General CNC Metalworking
Compared to other standard tool holders, the SK 50 tool holder offers:
Higher precision with reduced runout for enhanced machining quality.
Stronger clamping for safe operation at high speeds.
Longer lifespan due to premium steel and surface treatments.
Universal compatibility with diverse CNC equipment, making it more versatile than ISO or BT standard holders in some industrial contexts.
Q1: What type of collets can be used with SK50 collet holders?
A1: The SK50 tool holder is compatible with standard ER collets such as ER32 and ER40, depending on tool diameter.
Q2: Can SK50 CNC tool holders handle high-speed machining?
A2: Yes, these tool holders are designed for high-speed operations up to 8000 RPM while maintaining precision and stability.
Q3: How does SK50 compare with BT or ISO tool holders?
A3: SK50 tool holders offer superior clamping strength and longer taper engagement, resulting in better stability and reduced vibration, particularly for heavy-duty machining.
Q4: What industries commonly use SK50 tool holders?
A4: Aerospace, automotive, mold-making, heavy machinery, and precision CNC machining industries widely use SK50 holders.
Q5: How do I maintain my SK tool holder?
A5: Regular cleaning, inspection for wear, and proper storage will extend the life of the tool holder. Avoid exposure to corrosive environments.
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KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.
E-mail:sales@kuratatools.com