C20-ER20A-100L Collet Chuck Holder with 6pcs ER20 Spring Collet for CNC Milling Lathe Tool

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Description:

6pcs Spring Collets Set with C20 ER20A 100L Collet Chuck Holder CNC Milling 100mm Extension Rod Straight Shank

Collet Specification:

Model: ER20

Material: Spring Steel

Precision: <0.015

Gripping Range: 1/8', 5/32', 3/16', 7/32', 1/4', 9/32'

Upper Diameter: 28 mm

Bottom Diameter: 25 mm

Height: 34 mm

T.I.R.: 0.0003' or 5um.

Suitable For: Boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processing

Ground roughness is Ra0.4 Microns, plus overall fine polish.

Holder Specification:

Model: C20-ER20A-100L

Material: 40 chromium (40CR)

Hardness: HRC46-50

Accuracy: 0.01

Shank Diameter: 20mm
Clamping Range: 1-13mm

Length: 100mm

Feature:

1. Extension rod diameter and the other parts are precision ground to eliminate imbalances, increased stability

during cutting, tighten the nut directly, high rigidity, extremely powerful clamping force.

2. C20 shank holding all ER20A collets.

3. C20 20mm diameter straight extended shank,applicable for deep processing.

4. Extension rod diameter, and other parts have been precision ground to eliminate unbalanc and increase stability during cutting

5. The clamping nuts could be tighten straightly, high rigidity, strong clamping.

Package Included:

6 x ER20 Collets

1 x C20-ER20A-100L Chuck holder

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