ER TAP COLLET

ER TAP COLLET
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ER TAP COLLET

An ER Tap Collet is a specialized ER-series collet designed specifically for tapping operations. It features a square drive or torque slot for positive torque transmission, preventing tap slippage and ensuring accurate thread depth and pitch in CNC machining centers and tapping machines.

An ER Tap Collet is a specialized ER-series collet designed specifically for tapping operations.
Unlike standard ER collets, ER tap collets include a square drive / torque slot to positively transmit torque, preventing tap slippage and ensuring accurate thread depth and pitch in CNC machining centers and tapping machines.

Key Features

  • Positive square drive for torque transmission
  • Slip-free tapping (no pull-out)
  • Accurate, repeatable thread depth
  • Compatible with standard ER tap holders
  • Long life with hardened & ground construction
  • Suitable for rigid tapping & CNC cycles

ER Tap Collet – Exact Dimension Table

ER Size

Tap Size Range

Square Drive (Across Flats)

Collet OD (mm)

Length (mm)

ER16

M3 – M6

2.2 – 4.9 mm

17

27

ER20

M4 – M10

3.4 – 7.9 mm

21

31

ER25

M6 – M14

4.9 – 11.0 mm

26

35

ER32

M8 – M20

6.2 – 15.0 mm

33

40

ER40

M12 – M30

9.0 – 24.0 mm

41

46

Tap size depends on shank diameter and square size of the tap.

Construction Details 

  • Material: Alloy Spring Steel
  • Heat Treatment: Hardened & tempered
  • Hardness: 58 HRC
  • Design: Axial bore + square drive slot
  • Finish: Precision ground ID & OD

Types of ER Tap Collets

  • Standard ER tap collet (square drive)
  • ER tap collet for rigid tapping
  • ER tap collet for blind & through holes
  • Custom ER tap collet (special square / bore)

Applications

  • CNC machining centers
  • Rigid tapping operations
  • Drilling & tapping machines
  • SPM & production tapping lines
  • Automotive, hydraulic & precision parts

ER Tap Collet vs Standard ER Collet

Feature

ER Tap Collet

Standard ER Collet

Torque Transmission

Positive (Square Drive)

Friction only

Tap Slippage

Almost Zero

Possible

Thread Accuracy

Very High

Medium

Best Use

Tapping

General tool holding

 

Supply Options

  • ER16 / ER20 / ER25 / ER32 / ER40
  • Metric tap sizes (inch on request)
  • Standard & custom square drives
  • Made as per tap brand or drawing
  • Export-quality packing available

Most searched keywords

ER tap collet manufacturer ER tapping collet ER tap collet square drive Rigid tapping ER collet ER tap collet supplier India

Frequently Asked Questions

What is an ER Tap Collet?

What are ER Tap Collets made of and what are they used for?

ER Tap Collets are generally made from high-quality hardened steel, providing excellent strength, durability, and a long service life. They are used to securely hold threading taps in CNC machines, milling machines, machining centers, and other compatible equipment, helping create accurate internal threads in a wide range of materials.

How can I maintain an ER Tap Collet?

Keep the collet clean after every use by removing metal chips and dirt. Avoid over-tightening, inspect it regularly for wear or damage, and replace it if it no longer holds the tap securely, shows visible cracks or excessive wear, or affects threading accuracy.

Does Asmita Industries supply ER Tap Collets in bulk?

Yes. We can fulfill bulk orders for OEMs, machine builders, distributors, dealers, and industrial customers. We focus on consistent product quality, timely delivery, and dependable customer support. If you need any assistance, you can contact us at +91 85119 09016.

Why should I choose Asmita Industries for ER Tap Collets, and how can I place an order?

Asmita Industries offers precision-engineered ER Tap Collets made from quality materials for reliable performance and long service life. We also provide custom solutions based on customer drawings, machine specifications, and application requirements. To place an order, simply share your machine details, ER collet series, required tap size, and quantity. Our team will help you select the most suitable ER Tap Collet and provide a competitive quotation.

Product Inquiry

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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