packaging, labelling & logistics 39
rolling bearings made of PE (Polyethylene) or PPS
(Polyphenylene Sulphide).
The effectiveness of NSK’s materials specification
means that the Aqua-Bearing is even able to handle
applications in strong acids or alkalis, ozonised water,
various kinds of vapour and halogen gases.
In addition to providing improved corrosion
resistance, the fibre- reinforced fluorine material gives
the inner and outer bearing rings increased strength and
rigidity.
It also provides an endurance life of more than 1000
times that of A1S144OC stainless steel bearings and five
times that of previous PE (Polyethylene) bearings under
a light load in an acid solution.
High temperatures
For operations in corrosive environments where higher
temperatures are encountered (up to 200°C) NSK has
developed Spacea bearings with (nickel coated) inner Fig. 2. Beef burger packaging: NSK's Molded Oil bearings remove
and outer rings of Martensitic stainless steel, ceramic downtime assocaited with relubrication intervals
balls and fluororesin cages.
These bearings are grease free, employing a solid Offering a lower cost option in applications
high performance fluorine solid lubricant. They offer where frequent wash-downs are required is NSK’s
higher corrosion resistance than stainless steel bearings, Silver-Lube range of ball bearing units. These are a
and have longer operating life than hybrid bearings and range of corrosion resistant mounted bearing units
stainless steel bearings in acid solutions: four times as designed specially for use in industries where hygiene
long for hybrid types, and twelve times that of stainless considerations and corrosion and chemical resistance
steel units, when tested in a NaCl solution. are important; typically bottling and brewing, food
processing, pharmaceuticals, fisheries and chemical
here the problem is more lubricant than processing.
W
material based, NSK offers its stainless Silver-Lube housings – pillow block, two and four bolt
steel range of Molded Oil bearings. flange types – are manufactured from PBT. This is a high
These units employ a special solid quality glass filled thermoplastic polyester resin, which
lubricant to transform the performance of machinery has excellent strength, stiffness, dimensional stability and
and equipment, in terms of reliability, maintenance free chemical resistance.
intervals and operation, in environments exposed to high Integrated into the housings are bearing inserts with
humidity, corrosion and contamination. stainless steel raceways, cage, balls and grub screws.
☞
The effectiveness of Molded Oil technology enables
machine builders to make real cost savings by replacing
existing, and often costly, methods of lubricating
machine parts.
In real world tests, Molded Oil offers more than
twice the operating life of grease lubrication in water
contaminated environments. In addition, the technology
means that operating environments are kept free of
grease; and there is no need for refilling of lubricant, as
Molded Oil provides a continuous supply of lubricating
oil.
The benefits of Molded Oil technology also extend
to beverage applications where manufacturers want to
employ the prefabricated advantages of ball bearing
units. The bearing units: pillow block, flange and take-
up types, are manufactured from stainless steel. They
are suited to applications where cleanliness and a high
resistance to corrosion are required.
In addition to Molded Oil lubrication, customers
for the bearings have the option of a special USDA H1- Fig. 3. The new beefburger-packaging machinewas custom designed by
compliant, food grade grease. Autowrappers for Unilever-Birds Eye Foods.
www.scientistlive.com
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44