Comparing 3 Wire Straightening Methods: Roller, Drum and Multi-Roller Precision

Wire straightening precedes cutting. Poor straightening means inaccurate cut lengths. Surui offers 3 straightening methods for different scenarios.

1. Pressure Roller Straightening (Dual-Row Standard)

Principle: The wire passes through two sets of staggered rollers, repeatedly bending to relieve internal stress.

Best for: Regular wires of 1–6 mm diameter

Pros:

• Simple structure, easy maintenance
• Suitable for most metal wires
• Lower cost

Cons:

• Less effective on severely bent wire
• Rollers need replacement when worn

Standard on Surui M-04 / D-01 / D-02.

2. Rotary Drum Straightening

Principle: The wire passes through a high-speed rotating drum and is straightened by centrifugal force.

Best for: 1–4 mm wires with significant bending

Pros:

• Excellent for coiled wire
• Non-contact, no surface scratching

Cons:

• Relatively noisy
• Not suitable for thick wire

Optional on Surui S-02.

3. Multi-Roller Precision Straightening (15 Stages)

Principle: The wire passes through 15 sets of precision rollers, progressively relieving stress to achieve straightness of 0.1 mm/m.

Best for: High-precision applications, 1–12 mm wire

Pros:

• Best straightness
• Ideal for precision parts (mold ejector pins, electronic leads)
• Full wire diameter range

Cons:

• Complex structure, higher cost
• Parameter adjustment requires experience

Standard on Surui SR12.

Comparison Table

How to Choose?

• Regular hardware parts: pressure roller is sufficient (M-04 / D Series)
• Coiled wire: choose rotary drum (S-02 optional)
• Precision parts (mold pins, electronic leads): choose multi-roller (SR12)