Selecting the correct guide bush for a CNC Swiss-type automatic lathe is critical for maintaining machining precision and avoiding production downtime. While machine manufacturers dictate the physical dimensions required for their specific models, tool manufacturers globally use varying alphanumeric codes—such as Dünner, Neukomm, and Meister norms—to classify these exact same parts.
Instead of navigating complex historical catalogs, the most efficient way to source a guide bushing is by matching your specific machine model to its industry-standard cross-reference codes. Below is a practical guide mapping popular CNC machine models to their equivalent guide bush norms.
Machine-Specific Guide Bush Equivalents
Star Micronics CNC Lathes
Different machine models utilize specific shank and head diameters for their tooling. Here is how standard machine models translate into global tooling norms.
Star machines are widely used in precision manufacturing, typically operating with standard guide bushing profiles like the F25.
Example Model: Star SB-20, Star SR-20J
Standard Type Code: T223 (F25 Profile)
Global Equivalents: When sourcing for the SB-20, if you cannot find the T223 code, you can confidently use Dünner B261 or Neukomm 22.001, as they represent the exact same mechanical specifications.
Citizen Cincom Lathes
Citizen (Cincom) machines often require smaller, highly precise guide bushings for micro-machining components.
Example Model: Citizen K12
Standard Type Code: F853 (F16 Profile)
Global Equivalents: For a Citizen K12, the direct cross-references are Dünner B212A and Neukomm 166.001.
Nexturn & Hanwha CNC Lathes
South Korean manufacturers like Nexturn and Hanwha share tooling compatibility with European and Japanese norms, scaling up depending on the bar capacity (e.g., 20mm vs. 26mm vs. 32mm).
Example Model (20mm Capacity): Nexturn SA 20 D/E, Hanwha XD20
Standard Type Code: T223
Global Equivalents: Dünner B261 | Neukomm 22.001
Example Model (26mm/32mm Capacity): Nexturn SA 26 D/E
Standard Type Code: T227 (F32 Profile)
Global Equivalents: Dünner B227 | Neukomm 451.001
Ultimate Guide Bush Cross-Reference Table
To streamline your tooling procurement, use the following structured table. This matrix aligns standard Type codes with machine examples and their corresponding Dünner and Neukomm manufacturing norms.
Understanding these equivalents ensures supply chain flexibility. If a specific “T-code” is out of stock, purchasing the Dünner or Neukomm equivalent guarantees a seamless fit and uninterrupted machining operations.
