Other models IKO RNA4872 bearing the same size:
IKO needling roller bearings RNA 4872 with Good Performance
The releated models of needling roller:
Description of needling roller:
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 automobile,machine
toll,lathe,metallurgical,textile,printing industry and etc. Various machinery equipment. With this kind of bearing,machine
can realize the goal of small-scale & light weight.
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 rings,cages,rib or
sealings. It can be designed
according to the special structural requirements of customers as
Product Precision Accuracy of needling roller:
Dimensional tolerance and geometrical accuracy is based on
Mutual difference of needle roller diameter is 2 um,and the
precision grade is class
G2(ISO GB/T309). 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
class 0 group of GB/T4604
Special precision grade in based on GB/T307.1
For fuller information on the special requirement of bearing
running clearance, inscribed circle
and precision grade,please contact our company.
Material of needling roller:
Material for needle roller is GCr15 bearing steel,quench-hardening
Material for inner and outer rings is GCr15 bearing
Material for cages is quality low-carbon steel or reinforced nylon.
|Products name||IKO needling roller bearings RNA 4872 with Good Performance|
|Ring material||Chrome Steel, Carbon Steel, Stainless Steel|
|Brand||International Brands and YHB Brand|
|Precision||P0,P6, P5, P4|
|Application||Mine machine, port hoisting machine, port transfer equipment,
crane; excavator, concrete machine,paper machine, weave machine,
steel and electronic plants etc. machines and equipments.|
Q: What kind of bearings you supplied?
A: We supply all specification of bearings:deep groove ball
tapered roller bearings—– cylindrical roller bearings —-Spherical
—– angular contact bearings – – thrust roller bearings —-thrust
spherical bearings -needle roller bearings—-pillow block
bearings—-sliding guid bearings
—-wheel hub bearings and high-precision low-noise high-speed
operation of special bearings.
We also agent and supply all world famous brands of bearings:SKF
NSK bearings,NACHI bearings,TIMKEN bearings,KOYO bearings,IKO
bearings,INA bearings, NMB bearings,BONES REDS bearings…
Non-standard bearings can be?produced according to your drawing in
Q: When selecting bearings, what should we need to consider?
A: The precision of the bearings (dimension tolerance, loading
clearance and hardness under?heat treatment, structure of cage and
Q:The advantage of bearings??
(1) reduce friction and wear.
To prevent metal contact and reduce friction and wear in the
contact part of the bearing ring,
rolling body and maintainer.
(2) prolong fatigue life.
The rolling fatigue life of the bearing, in the rotation, the
rolling contact surface lubrication good, then extended. Conversely, the oil viscosity is low, the
lubricating film thickness is not good, then shortened.
(3) exhaust friction heat and cooling.
The circulation to oil method can be used to exhaust the heat
generated by friction, or from external heat, cooling. Prevent the bearing from overheating and prevent the
lubricating oil from ageing itself.
Q:Application area of bearings ?
It can cover almost all mechanical industries, including robotic
systems, lathes, tools, automobiles, large equipment, and so on.
Q: Can I have a sample order ?
A: Yes, we welcome sample order to test and check quality. Mixed
samples are acceptable.
Q: What about the lead time?
A:Sample needs 3-7 days, mass production time needs 3-4 weeks.
Q:What is your payment method?
A:We accept T/T, PAYPAL or Western Union, credit card.
If you need the any brands or any models of bearings, please
Shenyang Sharjah Bearing Co., Ltd.