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CoroThread® 266

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Insert type

Choose the right type of insert for your thread turning operation.

Find the right insert

Insert clearance angles

Flank clearance or radial clearance are necessary for precise, accurate thread turning.

Learn more

Threading application guide

Download the Threading application guide loaded with information about thread turning.

Go to guide

Coolant connection on QS™ shanks

There are three ways to connect the coolant: using adaptor (first choice), using rear tube connection or with rear tube connection with a QS stop.

View more instructions

Coolant connection kits

Learn how to assemble and disassemble the QS shanks coolant connection kits.

QS holding system

Application tips

How to achieve good thread quality

Use these helpful tips to succeed in your thread turning operations.

Troubleshooting

There are many types of insert wear. By paying close attention to the cutting edge after machining, tool life and thread quality can be further optimized.

Recommendations

Find the right shim

Use this table to find the suitable shim for your CoroThread 266 tool holder depending on pitch, insert size and inclination angle.

Pitch range Insert size Inclination angle, λ Shims
mm (TPI) mm inch For right hand external tool / For left hand internal tool For left hand external tool / For right hand internal tool
0.5-3.0 (32-6) 16 3/8 -2o 5322 389-22 5322 390-22
-1o 5322 389-21 5322 390-21
0o 5322 389-10 5322 390-10
1o 5322 389-111) 5322 390-111)
2o 5322 389-12 5322 390-12
3o 5322 389-13 5322 390-13
4o 5322 389-14 5322 390-14
2.5-7.0 (11.5-4) 22 1/2 -2o 5322 379-22 5322 380-22
-1o 5322 379-21 5322 380-21
0o 5322 379-10 5322 380-10
1o 5322 379-111) 5322 380-111)
2o 5322 379-12 5322 380-12
3o 5322 379-13 5322 380-13
4o 5322 379-14 5322 380-14
8.0 (5-3) 27 5/8 0o 5322 387-10 5322 388-10
1o 5322 387-111) 5322 388-111)
2o 5322 387-12 5322 388-12
3o 5322 387-13 5322 388-13
4o 5322 387-14 5322 388-14

Pitch range       Insert size Inclination angle      Shims for holders 266R/LFA
mm mm inch For right hand external tool / For left hand internal tool For left hand external tool / For right hand internal tool
0.5-3.0 16 3/8 0o 5322 391-10 5322 392-10
1o 5322 391-111) 5322 392-111)
2o 5322 391-12 5322 392-12
3o 5322 391-13 5322 392-13
4o 5322 391-14 5322 392-14

1) Delivered with the tool

Note: The last two figures in the shim code indicate + or – and the effective inclination angle with the shim mounted in the holder, e.g. 5322 379-11 = angle +1o and 5322 379-21 = angle -1o.

On our Knowledge section you find more information about how to choose thread turning inserts and shims.


Cutting data

For information about cutting data, see Turning tools catalogue.


Insert geometry

ISO MC number CMC number Geometries
A F C
P P1.1.Z.AN 01.1
P2.1.Z.AN 02.1
P2.5.Z.HT 02.2 
P3.1.Z.HT 03.21 
M M5.0.Z.AN 05.11
M1.0.Z.AQ 05.21
M3.1.Z.AQ  05.51
K K1.1.C.NS 07.2  
K2.2.C.UT 08.2  
K3.1.C.UT 09.1  
N N1.2.Z.UT 30.11
N3.2.C.UT 33.2
S S1.0.U.AN 20.11  
S2.0.Z.AG 20.22  
S4.2.Z.AN 23.21  

For ISO H use CBN-insert, CB7015


= First choice

= Second choice

= Alternative choice



Grades

 

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