SMK Original EDM Wire
Premium Wire
LIMITED PREMIUM
High-Quality Wire Electrodes
for Precision Machining
This is a high-precision machining wire electrode that meets stricter quality control standards than conventional brass wires. It reduces abnormal discharges caused by surface scratches or defects on the wire. By minimizing wire diameter tolerances, the inter-electrode distance during wire EDM machining remains stable, ensuring voltage stability. It also helps reduce the subtle machining marks that are difficult to see during precision processing.
SMK
PRODUCT
LINEUP
Features of LIMITED PREMIUM
Stricter Control
of Wire Diameter Tolerances
Conventional Wire
LIMITED PREMIUM manages wire diameter ovality tolerances with smaller maximum and minimum deviations compared to conventional wires, achieving near-perfect roundness.
Features of LIMITED PREMIUM
Comprehensive Surface
Control of Wire
Smooth Surface
Snags
■ Conventional Wire
When pinched, the wire glides smoothly without causing snags on the fingers.
This exemplifies the surface management of LIMITED PREMIUM.
Features of LIMITED PREMIUM
Reduces Abnormal Discharges, Contributing to Voltage Stability
and Reduced Machining Marks
Even if machining marks are not visible on the surface
Surface Roughness
relatively smooth
Height Differences
smooth
Conventional Wire
Surface Roughness
The surface exhibits waviness
Height Differences
undulations
The Reason Machining Marks Remain After Lapping
Is Surface Height Differences
When Surface Roughness Has Minimal Height Differences
Using LIMITED PREMIUM ensures consistent machining surfaces across wire lots and stabilizes lapping.
After Wire EDM Machining
After Lapping (Quantitative)
Conventional Wire
When Surface Roughness Has Significant Height Differences
Variations in wire diameter tolerances across lots make it impossible to manage lapping quantitatively.
After Wire EDM Machining
After Lapping (Quantitative)
Innovate Filtration System
Premium Wire
LIMITED PREMIUM
Unit: mm
LIMITED PREMIUM 10
0.10
0.15
Wire Diameter
0.20
0.25
0.30
P5S
P5S / P5
Standard Specification
P5 / P10 / P20
P5 / P10 / P20
P20
LIMITED PREMIUM 15
Type
Hard Brass
Model No.
LIMITED PREMIUM 20
LIMITED PREMIUM 25
LIMITED PREMIUM 30
None
Paraffin
None
None
None
None
≥ 980 MPa
Tensile Strength
≥ 980 MPa
≥ 980 MPa
≥ 980 MPa
≥ 980 MPa
≤ 3.0%
Elongation Rate
≤ 3.0%
≤ 3.0%
≤ 3.0%
≤ 3.0%
0.10 ±0.001 mm
Wire Diameter Tolerance
0.15 ±0.001 mm
0.20 ±0.001 mm
0.25 ±0.001 mm
0.30 ±0.001 mm
10
Model No.
15
20
25
30
Bobbin Code Shape Dimensions and Packaging Method
Bobbin Shape
Winding Weight (kg)
3
5
10
20
Total Equivalent Weight
12kg
20kg
20kg
20kg
Bobbin Quantity
per Box
4spool
4spool
2spool
1spool
Bobbin
Color
clear
clear
clear
gray
Bobbin
P5S
P5
P10
P20
D(mm)
160
160
200
250
b(mm)
90
90
90
125
W(mm)
114
114
134
140
h(mm)
20
20
25
34
A(mm)
12
12
12
15
*LIMITED PREMIUM 10/15 is only available in P5S specification.
