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Union Materials

Ceramic and Ferrite manufacturer, Ceramic insert, Cutting tools, Fine ceramics, Ferrite magnet products

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Union Materials
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SKU
62048
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<tab title="CUTTING TOOLS">

TOLERANCE GUIDELINE

Symbol d(mm) m(mm) s(mm)
A ±0.025 ±0.005 ±0.025
F ±0.013 ±0.005 ±0.025
C ±0.025 ±0.013 ±0.025
H ±0.013 ±0.013 ±0.025
E ±0.025 ±0.025 ±0.025
G ±0.025 ±0.025 ±0.13
J ±0.05 ±0.05 ±0.13
K* ±0.05~±0.13 ±0.13 ±0.025
L* ±0.05~±0.13 ±0.025 ±0.025
M* ±0.05~±0.13 ±0.08~±0.18 ±0.13
N* ±0.05~±0.13 ±0.08~±0.18 ±0.025
U* ±0.08~±0.25 ±0.13~±0.38 ±0.13

The above tolerances are managed by requirement of ISO (International Standard Organization) and ASA(American Standard Association) regulations.
The form of expression of symbols from "A" to "U" is standardized by ISO, ASA and industry as well.
Tolerances from "K" to "U" are figures of blank condition.
Tighter controlling of tolerances is achievable depending on customers' request and shape (design) of cutting tool.


<tab title="INDUSTRIAL TOOLS">

TOLERANCE GUIDELINE

ITEM REF.SIZE
(inches)
No Grinding Grinding
Blank Typical Special
O.D. <1.0 ±0.012 ±0.005 ±0.0004
>1.0 ±0.1% ±0.005 ±0.0004
I.D.(Hole) <1.0 ±0.012 ±0.005 ±0.0004
>1.0 ±0.1% ±0.005 ±0.0006
Hole Pitch <1.0 ±0.012 ±0.005 ±0.0004
>1.0 ±1% ±0.005 ±0.0008
Radius <1.0 ±0.02 ±0.01 ±0.005
>1.0 ±1% ±0.012 ±0.005
Chamfer <1.0 ±0.02 ±0.01 ±0.002
>1.0 ±1% ±0.012 ±0.003
Angle - ±2 Degree ±30' ±3'
Surface Finish - 32-125 Ra 44 Ra <8 Ra
Flatness <8.0 0.006/inch 0.002 0.00002
>8.0 0.008/inch 0.005 0.00004
Parallelism <8.0 0.01/inch 0.002 0.0008
>8.0 0.02/inch 0.002 0.0008

In order to get extremely tight tolerances, Union has utilized its own technologies and ability to grind, lap, buff and polish.
Dimensional & physical stabilities, excellent wear resistance and anti-corrosion characteristics of ceramic materials enable to sustain extremely precise tolerances even in hard working conditions.
The above tolerance guideline helps you to design and develop your ceramic products and components. Union is always with you to assist customers' new project and their future prosperities.

OPTICAL FERRULE BLANK

Type O.D.
(mm)
LENGTH
(mm)
HOLE
Concentricity
(μm)
Straightness
(μm)
SC CON-TOP
(OD and Length Ground)
±0.01 ±0.025 <30 <15
SC FLAT
(OD and Length Ground)
±0.01 ±0.025 <30 <15
MU
(Sintered)
±0.02 0.5 <20 <15

Tolerance of blanks is ±0.02mm in Outer Diameter and ±0.5mm in Length.

Union Materials
Ceramic and Ferrite manufacturer, Ceramic insert, Cutting tools, Fine ceramics, Ferrite magnet products
Union Materials Corp. established on June, 2000, has been growing as a worldwide advanced material manufacturer, despite its brief history as a material specialized company, Headquartered in Taegu, Union has plants in Pohang and Taegu, and a marketing office in Seoul which is the contact for global sales network. Including ferrite magnets, which are internationally recognized for their high quality, Union manufactures and supplies various ceramic-based parts and cutting tools. It also produces industrial ceramics for the automobile industry, electrical and electronic engineering, and machinery. Union is the largest market supplier in the world with the best quality and technology, especially in the field of magnetron ceramics. It was officially recognized as a manufacturer of a World-Class Product by the Ministry of Commerce, Industry, and Energy of Korea. With its continuous research and development, Union’s ferrite magnet manifests top-notch quality and satisfies various demands from customers. Consequently, Union won the Best Supplier Awards for the three consecutive years from Bosch, the world largest motor manufacturer.  Even in the face of the financial crisis in South Korea in 1997, Union didn’t stop its aggressive investment in R & D. It differentiated itself from other competitors by following the Total Productive Maintenance activities and with continuous cost reductions, which made it possible to have a consistently increasing profit margin. Year after year, Union has stepped up its efforts and has come to achieve around a 15% sales growth factor every year. The three principles put forth by the CEO, sound management of assets, fair distribution of profits, and contributions to the community, played a fundamental role in uniting labor and management. Still, the three standards serve as the groundwork for “clean company”, a slogan for transparent and ethical management.
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