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Compatible Carbide Inserts
Specifications
Material & Construction
High-grade precision ground steel
Technical Information
Dimensions: D=outer diameter, d1=inner diameter 1, d2=inner diameter 2, L=extension length
Boring Tool Extension Rod
LBK Boring Tool Extension Rods are precision-engineered extensions designed for use with CBA micro finish boring heads. These extension bars allow operators to reach deep internal bores while maintaining the rigidity and accuracy required for precision boring operations. Key Features: • Precision Ground: Ensures concentricity and minimal runout • Multiple Sizes: LBK1 through LBK6 series to match various CBA boring head sizes • Various Lengths: Available from 30mm to 180mm extensions • Side-Lock Taper Screws: SM4 to SM12 for secure clamping • High Rigidity: Steel construction for stable boring operations Model Nomenclature: • **LBK**: Product series (Locking Block / Extension Rod) • **1-6**: Size designation matching CBA boring head series • **L**: Extension length in millimeters Example: LBK3-3-100L = LBK3 series, 100mm extension length Size Specifications: • **LBK1**: D=19mm, d1/d2=11mm, uses SM4 screw • **LBK2**: D=24mm, d1/d2=14mm, uses SM5 screw • **LBK3**: D=31mm, d1/d2=18mm, uses SM6 screw • **LBK4**: D=39mm, d1/d2=22mm, uses SM8 screw • **LBK5**: D=50mm, d1/d2=28mm, uses SM10 screw • **LBK6**: D=64mm, d1/d2=36mm, uses SM12 screw Applications: • Deep hole boring operations • Extended reach internal finishing • Precision bore sizing in deep cavities • Mold and die manufacturing • Hydraulic cylinder boring
Select Specifications
φ(d)=Cutting Diameter | R=Radius | D=Shank Diameter | I=Cutting Length | L=Overall Length | All in mm
D=Diameter | L1, L2, L3=Length Dimensions | L=Overall Length | D1=Shank Diameter | All in mm
Select blade width, groove depth (T), and working radius range to find the right Face Groove tool
Select boring diameter range, shank diameter (D), and insert type (C=diamond/T=triangular) to find the right boring head
Select CBA model (complete boring range) and internal boring range to find the right micro finish boring head
Select LBK model (matches your CBA boring head) and extension length to find the right extension rod
Select BT type (spindle taper), LBK number (locking block socket), CBA head model, and projection length (L1) to find the right boring head shank
HRC≤56 is recommended for best price/performance ratio with newest nano-black coating technology.
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SKU / Article Number
D (Diameter)
L1
L2
L3
L (Overall)
D1
Insert Code
Insert Count
LBK Model
Extension Length
D (Outer Ø)
d1 (Inner Ø)
d2 (Inner Ø)
Side Screw
Blade Width
Blade Height
Groove Depth
Orientation
Working Radius Range
Compatible Inserts
φ(d)
R
D
I
L
Morse #
H7 Tolerance
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