TTE — Tool Holder Family Design
Definition: Specifies an external grooving and turning tool holder from the manufacturer's premium parting/grooving product family.
Engineering Context: The "T-Clamp" clamping system uses a robust, top-mounted rigid finger clamp designed to withstand heavy lateral cutting forces during turning and multi-directional profiling without compromising dimensional accuracy.
L — Left-Hand Cutting Direction
Definition: Indicates the tool holder has a Left-Hand (LH) cutting orientation.
Engineering Context: When viewing the holder from the front toward the cutting edge, the insert sits on the left side. This dictates the directional feed of the lathe carriage (moving away from the headstock in normal spindle rotation, or towards it if inverted).
2525 — Metric Shank Dimensions
Definition: Specifies a standard metric square shank size of 25 mm × 25 mm.
Engineering Context: The first 25 defines the shank height (25 mm) and the second 25 defines the shank width (25 mm). This heavy-duty cross-section provides immense structural rigidity, effectively absorbing harmonic vibrations during interrupted cuts or tough metal removal.
2C — Pocket / Insert Width Capacity
Definition: Represents the nominal insert seat width, engineered exclusively for 2.0 mm wide inserts.
Engineering Context: The "C" profile defines the precise shape of the insert's seating floor to prevent rotational deflection. This holder will only accommodate 2.0 mm wide grooving/parting inserts; using an improper width will result in pocket distortion or catastrophic insert failure.
