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SLZ-Needle roller bearing is a bearing unit composed of machined
outer ring & inner ring, cage and needle roller assembly featuring
small section height, big load capacity & rigidity, compact structure
and small size, high rotating accuracy with the structure of disposed
inner ring.
Needle roller bearing is characterized by multiple structures,
broad adaptability and easy installation.
It is widely used in auto, lathe, metallurgical, textile, printing
industry & other various machinery equipment. With this kind of
bearing, machine design can realize the goal of small-scale &
lightweight.
Types of Designs:
This kind of bearing has multiple
structural styles for the choice of customers, such as narrow & broad
series, with or without inner races, cages, ribs or sealings. It can be
designed according to the special structural requirements of customers as
well.
Product Precision Accuracy:
Dimensional tolerance
and geometrical accuracy is based on GB/T5801.
Mutual difference of
needle roller diameter is 2μm, and the precision grade is G2 (ISO
GB309).
The diameter of inscribed circle conforms to tolerance grade F6
before the fitting of outer ring with cage and roller
assembly.
Bearing radial running clearance conforms to the value
defined by 0 group of GB/T4604.
Special precision grade is based on
GB/T307.1
For fuller information on the special requirements of bearing
running clearance, inscribed circle and precision grade, please contact
this company.
Materials:
Material for needle roller is
GCr15 bearing steel, quench-hardening HRC60---65.
Material for inner
and outer races is GCr15 bearing steel, quench-hardening
HRC61---65.
Material for cages is quality low-carbon steel or
reinforced nylon.
Special Directions:
Bearing running
clearance and inner-cutting roundness should be regulated according to
different conditions.
Machine tools should be used for press-in fitting
or thermal fitting of the bearing
Limited by plastic cages (suffixed
with TN) and sealing-element material, operating temperature is
-300C---+1000C.
For general-disposition design of bearings, refer to
the relevant recommendation in the applied technology of rolling bearings.
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