Tools And Appliances Corporation ( TACO ): CNC Bushing

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CNC Bushing Type

🔧 What Is a CNC Bush?

A CNC bush (or bushing) is a precision-engineered component used in CNC (Computer Numerical Control) machines to:

v Hold and guide tools like drills, boring bars, or reamers

v Reduce wear and vibration between moving parts

v Ensure accurate alignment of tools within the machine turret or holder

🛠️ Common Materials

CNC bushes are made from various materials depending on the application:

v Mild Steel (MS) – Durable and cost-effective

v Stainless Steel (SS304, EN24T) – Corrosion-resistant and strong

v Delrin (POM-C) – Lightweight, self-lubricating plastic for high-stress systems

v Copper or Brass – Used in specialized or high-conductivity setups

⚙️ Types of CNC Bushes

v Type A, B, C Bushings – Each designed for specific tool-holding needs

v Flanged Bushes – Prevent axial movement

v Split Bushes – Easy to install and remove

v Threaded Bushes – Secure fastening in tool holders

🧩 Applications

v CNC turning and milling machines

v Automotive and aerospace components

v Industrial machinery and robotics

🔍 Comparison of CNC Bushing Types

Type	Key Features	Best For
B	Split design, flat O.D., stepped head for easy removal	Round shank tools without flats
C	Slotted body with set screw holes	Tools with flats or anti-rotation features
J	Solid body, no split, often used with set screws	General-purpose holding with moderate clamping
Z	Precision ground, often used in high-speed setups	High-accuracy applications
LB	Long body style, solid construction	Deep turret pockets or extended reach requirements
LBF	Long body with flat O.D. and dual set screws; coolant clearance notches	Coolant-through tools and secure clamping
CS	Shortened version of Type C; universal fit across CNC machines	Compact setups and shorter tool lengths