A Multi Bore Collet is a special-purpose workholding collet designed with two or more bores to clamp multiple identical components simultaneously in a single cycle. Commonly used in CNC lathes, SPM machines, transfer lines, and automation systems, it increases productivity, reduces cycle time, and is ideal for high-volume production of small components.
A Multi Bore Collet is a special-purpose Workholding collet designed with two or more bores to hold multiple components simultaneously in a single clamping cycle.
It is widely used in CNC lathes, SPM machines, transfer lines, and automation setups to increase productivity and reduce cycle time.
Multi bore collets are ideal for small, identical components produced in high volumes.
Key Features
• Holds multiple parts at one time
• Higher productivity & reduced cycle time
• Uniform gripping on all components
• Secure clamping with consistent accuracy
• Suitable for automation & mass production
• Custom bore layout as per job requirement
Multi Bore Collet – Dimension Details (Typical)
|
Parameter |
Custom Range |
|
Number of Bores |
2 to 12 (or more) |
|
Individual Bore Size |
3 – 40 mm |
|
Bore Pitch / Spacing |
As per component |
|
Outer Diameter (OD) |
As per chuck |
|
Overall Length (L) |
As per machine |
|
Grip Type |
External / Internal |
|
Accuracy (TIR) |
≤ 0.02 mm |
|
Material |
EN47 / Alloy Steel / Special |
All dimensions are manufactured as per component drawing and machine specification.
Construction Details
• Material: Alloy Steel
• Heat Treatment: Hardened & tempered
• Finish: Precision ground bores
• Design: Optimized slit & taper for equal clamping force
• Options: Rubber lining / carbide lining for special jobs
Types of Multi Bore Collets
• External gripping multi bore collet
• Internal expanding multi bore collet
• Step-type multi bore collet
• Rubber lined multi bore collet
• Custom profile multi bore collet
Applications
• CNC turning centers
• Special Purpose Machines (SPM)
• Transfer & automation lines
• Fasteners, pins, bushes
• Automotive & precision engineering components
Advantages vs Single Bore Collet
|
Feature |
Multi Bore Collet |
Single Bore Collet |
|
Productivity |
Very High |
Standard |
|
Cycle Time |
Reduced |
Higher |
|
Part Handling |
Multiple at once |
One at a time |
|
Best For |
Mass production |
General use |
Supply Options
• Custom-designed from drawing or sample
• Compatible with pneumatic & hydraulic collet chucks
• Hardened / rubber lined / carbide lined options
• Export-quality manufacturing & packing
Have questions about a specific product? Our team will help you find the right option for your needs — ensuring compatibility, quality, and value.
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The NBC Collet is a high-precision tool holding component designed for CNC, milling, and turning applications.
Provides superior clamping strength for consistent and accurate machining operations.
Made from high-grade hardened steel for exceptional durability and long service life.
Ensures minimal runout, improving cutting accuracy and surface finish quality.
Reduces vibration during machining, enhancing tool life and operational stability.
Compatible with NBC collet chucks and various tool holding systems.
Easy to install, remove, and maintain in workshop and industrial environments.
Perfect for machinists seeking precision, rigidity, and reliable performance.