Accusize Industrial Tools R8 Shank Er40 Collet Chuck, 7/16” -20 Drawbar End, Max T.I.R. 0.0002” O.D to I.D. 0223-0240

Product Description

R8 taper shank ER collet chucks are typically used on manual milling machines. The R8 taper end fits into a machine spindle and the ER collet nut is compatible with ER collet. The ER32 nut is compatible with the ER32 style collet and the ER40 nut works with the ER40 style collet. ER collets are used to hold all the machine tools with a round shank. These R8 shank ER collet chucks deliver the quality significantly above average on market. The total indicator runout (TIR) is less than 0.0002″. The MAX RPM on the manual milling machines is 8,000. The manufacturer of the collet chucks inspects and produces them in a highly sophisticated lab and factory. You can hardly expect the collet chucks from the other MFG are of the same quality.

Features:

Made of high-grade tool steelHardened and precision groundMax TIR 0.0002″ O.D to I.DDrawbar thread: 7/16″-20MAX RPM: 8000

Caution

During testing and inspecting, be sure each component and all the parts are wiped clean; be sure the installation must be in place; otherwise, the accuracy will be greatly affected.During the inspection, whether the spindle has an error also has a great impact on accuracy.

Features

Under normal working conditions, the groove of the R8 works as a guiding function and helps improve the rigidity. When the spindle hole becomes larger, this feature will not function.

Please note that there is no wrench included.

Design, Assemble, and Dissemble

Eccentric Design, ISO 15488:2003(E)

The inside of the ER collet nut is intentionally designed like off-centering to help mount the ER collet much easier. It is in accordance with the requirements listed in ISO 15488:2003(E). If it is made symmetrical, the ER collet with the diameter larger than the inside size of the collet nut cannot be installed.

Assemble

Insert the ER collet into the nut at an angle. Lock it onto the eccentric groove of the collet nut and push it in. (Insert the cutter right after the step, before connect it to the holder/chuck/arbor.)

Inspection

Inspect the RPM of the ER collet, ER collet nut, ER collet holder/chuck/arbor, etc.

Dissemble

Take out the tool bit, press the end of the ER collet until the collet off the position. Push it out of the nut. (after take out the nut out of the holder.)

Cautions before Inspecting the Accuracy

Clean all tools and parts

This is an ultra-precision workholding tool. When doing the inspection to ensure that each part is wiped especially clean, and the installation must be in place, otherwise it has a great impact on the accuracy

Spindle Accuracy

When testing, whether the user’s machine tool spindle has errors on the accuracy also has a great impact. So you need to ensure that the accuracy of the spindle of the user’s test machine must be high.

ER Collet Accuracy

Please make sure that the accuracy of the ER collet must be high, many ER collets are marked as 0.0005″, many of them cannot reach it.

Entire Accuracy

If the accuracy of the collet in the hands of the customer is low, the accuracy of our toolholder is no longer high enough to detect the accuracy.

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Customer Reviews

4.2 out of 5 stars
114

4.2 out of 5 stars
114

4.2 out of 5 stars
114

4.2 out of 5 stars
114

Price

$55.20$55.20 $57.60$57.60 $55.20$55.20 $55.20$55.20

ER Type
ER32 ER40 ER32 ER32

Gage Length
2.48″ 2.83″ 2.36″ 2.36″

Collet Nut Diameter
1.97″ 2.48″ 1.97″ 1.97″

Drawbar End
7/16″-20 7/16″-20 1/2″-13 3/8″-16

Shank
R8 R8 MT3 MT2

Collet Capacity
0.08″-0.787″ 0.118″-1.023″ 0.08″-0.787″ 0.08″-0.787″

Collet Nut Style
Slotted Slotted Slotted Slotted

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Customer Reviews

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4.4 out of 5 stars
33

4.3 out of 5 stars
8

4.6 out of 5 stars
41

4.1 out of 5 stars
26

Price

$11.20$11.20 $12.80$12.80 $178.40$178.40 $177.18$177.18 $229.00$229.00 $243.00$243.00

Size
ER32 ER40 ER32 ER40 ER32 ER40

Made of high grade tool steel, Max RPM: 8000rpm. Shank: R8; ER Collet Style: ER40; Gage Length: 2.48″; Collet Nut Diameter: 1.97″; Drawbar End Thread: 7/16″-20
Hardened and precision ground. Max TIR 0.0002″ O.D to I.D
This is an ultra-precision workholding tool. When doing the inspection to ensure that each part is wiped especially clean, and the installation must be in place, otherwise it has a great impact on the accuracy
When testing, whether the user’s machine tool spindle has errors on the accuracy also has a great impact. So you need to ensure that the accuracy of the spindle of the user’s test machine must be high. In addition, please make sure that the accuracy of the ER collet must be high, many ER collets are marked as 0.0005″, many of them cannot reach it.
If the accuracy of the collet in the hands of the customer is low, the accuracy of our toolholder is no longer high enough to detect the accuracy.
R8 taper shank ER collet chucks are typically used on manual milling machines. The R8 taper end fits into a machine spindle and the ER collet nut is compatible with ER collet. The ER32 nut is compatible with the ER32 style collet and the ER40 nut works with the ER40 style collet. ER collets are used to hold all the machine tools with a round shank. These R8 shank ER collet chucks deliver a quality significantly above average on market. The total indicator runout (TIR) is less than 0.0002″.
The MAX RPM on the manual milling machines is 8,000. The manufacturer of the collet chucks inspects and produces them in a highly sophisticated lab and factory. You can hardly expect the collet chucks from the other MFG to be of the same quality.