Square Flange Pillow Block Bearing Housing Die Casting For Food
I. Product brief introduction:
The zinc base alloy die casting is unfavorable in the high
temperature and low temperature (below 0 ℃) under the working
conditions of use. Zinc base alloy has good mechanical properties
at room temperature. But the tensile strength at high temperature
and low temperature impact properties are down significantly.
We use excellent engineering zinc alloy material, stable chemical
ability, it is specially used for bearing housing, assembled with
stainless steel insert UC bearing SSUC205 or chrome steel bearing
GCr15 material. It is been used widly in food industrial
machines,anti-corrosion working conditions, etc. With excellent
stainless steel SUS440, SUS420 for insert bearing, guarantee long
II. Product Applications:
It is widely used in food processing and production lines, medical
machinery, pharmaceutical machinery, food machinery, chemical
machinery production line, packaging machinery
III. Product Features:
acid-resistant, alkali-resistant, working under the condition of
wet air corrosion, strong anti-corrosion.
|Color||zinc alloy orginal color|
|surface treatment||Original color or Electroplate|
|Package||UIB color box|
Package UIB color box, blue box, red box.
Zinc alloy Bearing unit No.
zinc alloy housing KFL004
|Unit No.||Shaft d||Dimensions(mm)||Bolt Size mm||Bearing No.||Housing No.||Weight|
1,We have complete process for the production and quality assurance
to make sure our products can meet your requirement.
2,one year quality guarantee.
Zinc alloy bearing knowledge- new bearing alloy material
High aluminium zinc base alloy is a new type of gravity casting
zinc-base alloy series, represented by ZnAl27Cu2Mg namely ZA27-2
and derivative of high al-zn base alloy, as a new type of bearing
alloy has been widely replaced part of babbitt and bronze, used to
make all kinds of bearings, bushings, skateboarding, slider, worm
gear and transmission nut anti-friction wear-resistant parts.
To join other elements for zinc based alloy. Often add alloy
elements are aluminum, copper, magnesium, cadmium, lead, titanium,
etc. Zinc base alloy low melting point, good liquidity, easy fusion
welding, brazing and plastic processing, in the atmosphere
corrosion, deformed material easy to recycle and remelting; But low
creep strength, prone to natural aging changes size. The melting
method, die casting and pressure processing timber. According to
the manufacturing process can be divided into cast zinc-base alloy
deformation of zinc base alloy.
Compared with babbitt
In addition to have a significant price advantage, but also has a
higher proportion of strong toughness, lower and wider application
range and so on.
Compared with the bronze
1. The strength, hardness and allowable pressure aluminum bronze
and widely than tin, lead, etc., allowable speed. Can completely
meet the wearing parts such as independent anti-friction bearing
conditions of use.
2. Strong affinity for lubricating oil, the better lubricity, plus
its metallurgical properties, low melting point, not easy to
metallurgical bonding with steel shaft), so using the tackiness
resistance is strong, anti-friction wear-resisting properties
become more prominent.
3. Low friction coefficient, wear small, and long service life.
Under the same conditions of use, generally in copper tile 1 times
above, which reduces the parts purchasing cost.
4. Thermal conductivity big (ZZnAl27Cu2Mg lambda = 125; ZCuAl10Fe3
lambda = 59), fast heat dissipation, the grinding temperature rise
is slow and low friction pair has better protective effect.
5. Low density materials (ZZnAl27Cu2Mg rho = 5 g/cm3), product
quality is light, light in weight is the same as specifications,
with a third), installation, maintenance more easy and convenient.
6. With high damping characteristics, vibration noise.
Save cost advantage is obvious
Zinc base alloy has the superior mechanical properties not only,
more high cost performance.
The lubrication recommendations
A. normally, appropriate USES VG680 dynamic viscosity of
lubricating oil in summer, winter appropriate USES VG460 dynamic
viscosity of the lubricants. At the same time, also want to
consider in using environment and the regional difference and high
attention whether the thickness of lube film lubrication
B. although high aluminium zinc base alloy bearing more than bronze
bushing to the requirements of the lubricating oil with low, but
because of the development trend of the modern equipment is toward
large load, high efficiency, long service life direction, so we
must update the concept of lubrication, in order to ensure the
machine more safety operation, suggest using high quality
lubricating oil containing extreme pressure and wear resistant
The characteristics of the zinc base alloy
1. The major.
2. The casting performance is good, can die casting precision of
complicated shape and thin wall parts, casting a smooth surface.
3. for surface treatment: electroplating, spray, spray paint.
4. On the melting and casting no iron, no corrosion pressed,
5. Have a good room temperature mechanical properties and wear
6. Low melting point, melts at 385 ℃, die-casting molding easily.
In use process must pay attention to the problem:
1. The poor corrosion resistance. When the impurity elements in the
alloy composition of lead, cadmium, tin, exceed standard, cause a
deformation of the casting and aging, characterized by swelling
volume, a significant reduction in the mechanical properties
especially the plastic, after a long time and even rupture.
Lead, tin, cadmium in the zinc base alloy solubility is small, and
focused on the grain boundary as cathode, rich aluminum solid
solution as the anode, in the presence of water vapor
(electrolyte), led to intercrystalline electrochemical corrosion.
Die casting due to intergranular corrosion and ageing.
2. Aging effect
Organization of zn-base alloy is mainly composed of zinc-rich solid
solution containing Al and Cu and rich Al solid solution containing
zinc, their solubility with temperature down. But as a result of
die casting solidification speed, thus to room temperature, the
solubility of solid solution is greatly saturated. After a certain
period of time, this kind of phenomenon of supersaturated gradually
lifted, and make the casting to slightly changing the shape and