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RUBBER BEARING - FULL MOLDED TYPE
Summary

Rubber Bearing
It is the rubber bearing that the rubber is vulcanized and adhered to shell
( reference to the right drawing) .
Because used for marine , it has grooves according to incoming and outgoing for marine.

Material
¡Û rubber( NITRILE RUBBER)
wear -resistance ,water-resistance , oil -resistance materal.
¡Û SHELL Stainless Steel :
SUS 316L etc Aluminum series
requirement of customers

Design

Load(Load) : kg / cm2
   total weight / I.D. X bearing length ( recommended load 1~1.5kg/cm2)

Groove I.D.
   Root( 4400/ (¥ð x bearing length x the number of grooves ))

Gap

Shaft (Sleeve) Dia(¥Õ)
Clearance
Shaft (Sleeve) Dia(¥Õ)
Max Clearance
mm
mm
50 ~ 100
0.30 ~ 0.50
15 ~ 50
2.5
100 ~ 150
0.40 ~ 0.70
50 ~ 150
4.5
150 ~ 175
0.50 ~ 0.85
150 ~ 230
6.0
180 ~ 245
0.60 ~ 1.15
230 ~ 300
8.0
250 ~ 265
0.70 ~ 1.30
300 ~
9.5
270 ~ 315
0.80 ~ 1.35

Feature

¡Û low coefficient of friction
¡Û superior wear-resistance
¡Û It make a sleeve life span of shaft increased.
¡Û It resist external power . And it is good for the relief of impact
¡Û It doesn't produce a noise .
¡Û It is long for maintenance and life span of production quality
¡Û It is less for the occurrence of marine pollution

Drive and assembling dirve

1. It is not used unless there is sea water or oil at time of drive and assembling dirve .
2. The gap of shaft and bearing should be bigger when the temperature of marine and oil at time of drive is more 30¡ÆC
3. It is not be used with oil and grease at time of assembling . Use with water soluble soap.
4. Especially preserve the place where does not exposed for many hours by heat and direct light .

SUBMERGED BEARING - FOR CIRCULATING PUMPS
Summary


The SUBMERGED BEARING maintains lubrication and increases revolving function for marine. It is a part which has wear-resistance , including vibration -resistance , durability in order to maintain funtions for the load support and vibration of axis

Feature

¡Û It has superior wear -resistance which is control a life span.
¡Û It has good durability due to wear - resistance.
¡Û It has heat -resistance.
¡Û It is superior for corrosion resistance compare to the metal product.
¡Û It is strong for the chemicals of acid and alkali.
¡Û It is light by 50% compare to the specific gravity of metal

Matter

SHELL ( SUS316L )



item
unit
value
Physical
Properties
hardness(brinell hardness)
-
under 187
yield strength
kgf/§²
over 1700
tensile strength
kgf/§²
over 4800
elongation
%
over 40
Chemical
Composition
properties
content(%)
C
¡Â 0.03
Si
¡Â 1.00
Mn
¡Â 2.00
P
¡Â 0.045
S
¡Â 0.030
Ni
12~15.00
Cr
16~18.00
Mo
2~3.00

RUBBER ( NBR )
item
unit
value(160¡É¡¿6 minitues )
test method
Physical Properties
specific gravity
1.28
ASTM D 6111
hardness
79~84
Shore A
100% MODULUS
kgf/§²
92
ASTM D 3187
300% MODULUS
kgf/§²
-
tensile strength
kgf/§²
180¡¾50
elongation
%
260¡¾50
tear strength
kgf/§²
-

Silicon Carbide
item
unit
value
test method
Physical
Properties
specific gravity
-
3.1¡¾0.5
ASTM C 373
porosity
%
16¡¾2
strength at break
kgf/§²
over 1326
ASTM C 99
coefficient of linear thermal expansion
¡¿10-6¡É
4.9
ASTM E 289
thermal conductivity
W/m¡¤K
18
ASTM C 201
maximum use temperatuer
¡É
1525

Inspection

Processing equipment
- MCT MACHING : WIA VX500
- CNC MACHING : SKT 80

Inspection equipment of processing measurement
- SURFACE TABLE : 1000 * 1000
- HEIGHT GAUGE (1/100 ERROR) : 0.01L - 300L
- MICROMETER (1/1000 ERROR) : ¥õ 0.001 - ¥õ 600
- HOLE GAUGE(1/1000 ERROR) : ¥õ 100 - ¥õ 500
- VERNIER CALLIPERS (1/100 ERROR) : 0.01L - 1000L

Inspection of liquid osmotic (PT inspection)

- first tratment >osmotic treatment > washing treatment >phenomenon treatment >observation > drying treatment > last treatment