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Extension Drill Sleeves
EXTENDED REACH + SIZE ADAPTATION
Extend reach while adapting taper sizes
Morse Taper extension drill sleeves for extending reach and adapting taper sizes. Combines the function of a reduction sleeve with additional length for deep hole work.
Check your machine spindle Morse Taper size (MT3, MT4, etc.)
Check your tool's Morse Taper size
Determine if you need extended reach for deep hole drilling
Select the model: MT[machine]-[tool]
Note: Extension sleeves can accept tools with equal or smaller taper sizes. Use MT3-3 for equal sizes with extended length, or MT3-2/MT4-3 for reduction with extension.
Extension Drill Sleeves
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
How to Choose the Right Holder
Shank Height (H): Choose based on your machine's tool holder/turret slot size
Tool Height (H3): Must match the H dimension of your SPB Tool (26mm or 32mm)
Example: If you have SPB26-3 tool (H=26mm), select H3=26mm
Must match your SPB Tool's H dimension
HRC≤56 is recommended for best price/performance ratio with newest nano-black coating technology.
