ISO Designation Breakdown
Each character in the part number specifies a precise technical attribute of the toolholder:
S: Indicates the tool material is a solid steel shank without a through-coolant channel.
12: Represents the shank diameter, which is exactly 12 mm.
M: Specifies the standard overall tool length, which is 150 mm.
S: Indicates the insert clamping method, which is a screw lock system.
D: Dictates the insert shape, designed for a 55° rhombic (diamond) indexable insert.
Z: Identifies the tool holder's specific cutting style and 93° approach angle (lead angle).
C: Denotes the insert clearance angle, which is 7° (positive insert).
L: Specifies that it is a left-hand orientation cutting tool.
07: Indicates the compatible cutting edge length of the insert, which is 7 mm (uses DCMT 0702... inserts).
Technical Specifications
Minimum Bore Diameter (
): Typically requires a 16 mm to 17 mm minimum entry hole depending on the manufacturer.
Functional Width (WF): Measures 10.5 mm from the back of the shank to the tip of the insert.
Matching Insert Type: DCMT 070204 or DCMT 070202 rhombic indexable carbide inserts.