High Precision R8 3 inch Boring Head Set 6pcs Boring Bar 6pcs Carbide Inserts

  •  R8 2084 Boring Head
  • High precision 0.005mm increase
  • For hole and face grooving
  • All critical surfaces precision ground
  • Made from alloy steel hardened to 54 – 56rc
  • Gage length is from 10mm to 500mm available
  • Concentricity is less than .0002 at collet face
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High Precision R8 3 inch Boring Head Set 5pcs Boring Bar 10pcs Carbide Inserts

The IGSTOOL Tool holder is balanced to G2.5 25,000 RPM on Germany HAIMER Tool Dynamic Balancing System,
Each Tool Holder with QC report card. 100% guarantee of each tool holders  in the high-performance
A balanced tool holder minimizes the centrifugal forces which minimize the stress on spindle bearing,
minimize vibration and maximize the cutting tool’s life a long time  and greatly improve surface finish

We accept Custom OEM Order 

High Precision 2084 Boring Head Set

Boring Head Boring Head Boring Range  0.5″-6.0″
Boring Hole  18mm
Adjustment  0.01mm increase
Run Out (TIR) <0.0002″ or 0.005mm
Color Oxide black
Boring Depth max300mm
Shank Arbor Accept BT30 BT40 BT50 CAT40 CAT50 and SK40 Straight Shank R8, Morse Taper
Order No IGSB0321

All boring head tool holder can be used on the lathe and milling grinding machine 

precision run out 0.005mm, adjustment 0.01mm increase boring tool


BJ1208-32 8-12 32 TBGE0601** 0.05-0.20 0.05-0.010 100-200 T6
BJ1210-40 10 -13 40 TBG0601** 0.07-0.25 0.05-0.010 100-200 T6
BJ1218-68 12 -17 52 TBGH0902** 0.07-0.25 0.05-0.015 100-200 T8
BJ1216-68 16-21 68 TBGH0902** 0.1-0.25 0.05-0.015 100-200 T8
BJ1220-83 20-130 83 TBGH1103** 0.05-0.2 0.05-0.015 100-300 T8




R8 ER11 7/16-20 1.3″ ER11 HEX. R8ER11IN
R8 ER16 7/16-20 1.5″ ER16 HEX R8ER16IN
R8 ER16 M12 1.4″ ER16 HEX R8ER16M
R8 ER20 7/16-20 1.5″ ER20 HEX R8ER20IN
R8 ER20 M12 1.5″ ER20 HEX R8ER20M
R8 ER25 7/16-20 1.5″ ER25 UM R8ER25IN
R8 ER25 M12 1.5″ ER25 UM R8ER25M
R8 ER32 7/16-20 2″ ER32 UM R8ER32IN
R8 ER32 M12 2″ ER32 UM R8ER32M
R8 ER40 7/16-20 2.2″ ER40 UM R8ER40IN
R8 ER40 M12 2.2″ ER40 UM R8ER40M



 Material Application

a. Quenched and tempered structural steel: The carbon content of this type of steel is generally about 0.25% to 0.55%. For structural parts of a given cross-sectional size, when quenched and tempered
along the cross-section during quenching and tempering (quenching and tempering), the mechanics
The performance is good. If the hardening is not penetrated and free ferrite appears in the microstructure, the toughness decreases. For steels with a tendency to temper brittleness,
such as manganese steel, chromium steel, nickel-chromium steel, etc., they should be cooled quickly
after tempering. The quenching critical diameter of this type of steel increases with the increase in grain size and alloying element content. For example, 40Cr and 35SiMn steel are about 30-40mm,
and 40CrNiMo and 30CrNi2MoV steel is about 60-100mm, which is often used in manufacturing Structural
parts such as shafts and connecting rods with large loads.cat40 end mill holder

b. Surface hardened structural steel: used to manufacture hard and wear-resistant surface parts and flexible parts, such as gears and shafts. In order to increase the toughness of the core of the part,
the carbon content in the steel should be low, generally 0.12 to 0.25%, and there is also an appropriate amount of alloy elements to ensure proper hardenability. Nitrided steel also needs to add alloy elements (such as Al, Cr, Mo, etc.) that are easy to form nitrides. Carburized or carbonitrided steel, after carburizing or carbonitriding at 850~950℃, quenched and used under low-temperature tempering (about 200℃). The nitrided steel is directly treated by nitriding
(480~580℃), and it is no longer quenched and tempered.


er collet chuck cat40 er32 er11 collet er collet er32 collet set er20 collet sizes er50 collet chuck er20 collet chuck
er collet holder cat40 er16 er32 collet er20 collet er16 collet er25 collet er40 collet er32 collet chuck
boring head for mill boring bar for sale

IGSTOOL built-in 2007,over 13+years production line include er collet,collet chuck ,cat40 tool holder ,cat40 collet holder ,collet holder ,shrink fit tool holder and slim fit collet chuck machine tools,we made  er collet from er8 ,er16 ,er20 ,er32 ,er40 up to er50 ,collet chucks taper in cat30,cat40,cat50 ,bt30 ,bt40,bt50 and hsk63 iso20 iso30 etc .We made the spring collet
precision up to 3um and er collet chuck up to 0.002mm run out precision .We also provide er collet set ,drill collet,5c collet set and r8 collet set ,our er collet precision
match techniks collet and lyndex collets. otherwise we accept OEM tool collet and router collet ,lathe collet chuck and 16c collet too.

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