A Closed-Loop, High-Stability Precision Cutting Technology

The endless diamond wire is a short, closed-loop wire (typical length <10 m) running continuously in a single direction at high linear speed (up to 80 m/s). The system maintains constant tension (150–250 N), eliminating the vibration and direction reversal inherent in conventional long-wire systems.

This leads to several technical advantages:

3.1 Ultra-Thin Kerf and High Yield

• Wire diameter down to 0.30 mm

• Kerf width typically 0.35–0.45 mm

For high-value NdFeB and SmCo blocks, this translates directly into cost reduction.

3.2 Low Cutting Stress, Minimal Chipping

Magnetic ceramics (ferrite) and sintered rare-earth magnets are highly brittle.
Endless wire provides:

• Uniform unidirectional motion

• Controlled wire tension

• Reduced lateral load

As a result:

• Edge chipping is significantly reduced

• Subsurface damage depth is smaller

• Post-grinding allowance is reduced

3.3 Superior Surface Quality

The continuous wire motion produces:

• Smooth, scratch-free surfaces

• Improved flatness and parallelism

• Reduced requirement for lapping or grinding

This is essential for precision magnetic components used in motors, sensors, and micromachined assemblies.

3.4 High Cutting Efficiency

Because there is no wire reversal:

• Wire can reach much higher stable linear speed

• Cutting speed rate increases

Endless wire systems typically demonstrate 2–4× higher efficiency than reciprocating systems in hard, brittle magnetic materials.

3.5 Greater Process Consistency

With constant tension and one-direction motion:

• Dimensional stability is higher

• Cut-to-cut variation is minimized

• Batch consistency improves

This is critical for multi-segment magnet arrays where tolerance stack-up cannot be tolerated.