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Steel / Plastic Cages Motorcycle Ball Bearings Deep Groove 6301 Zz Bearing Z3V3 Class

Categories Motorcycle Ball Bearings
Brand Name: VCD
Model Number: 6301 6302 6303
Certification: ISO9001:2000
Place of Origin: Ningbo,China
MOQ: 10000 pcs
Supply Ability: 1.5 million pcs per month
Delivery Time: 30 days according to purchasing quantity
Packaging Details: Industrial plastic tube packing
Steel Material: Gcr15 Chrome Steels
Rubber Seals Materials: NBR/ACM/FKM+SPCC+Nylon Cages
Balls: G10 or G5
Cages: Steel or Plastic
Quality Class: Z3V3 and Z4V4
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Steel / Plastic Cages Motorcycle Ball Bearings Deep Groove 6301 Zz Bearing Z3V3 Class

6301 6302 6303 etc,ZZ or 2RS,Motorcycles used ball bearings,Z2V2 and Z3V3 class for noise and vibrations class,ABEC-3.

Deep groove ball bearings are particularly versatile.They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available from VCD in many designs, variants and sizes.

VCD produced 608 deep groove ball bearings(Z3V3 class) are widely used in different types of air conditioners.Now we have established supplying relations with many air conditioners producers in China and

608 ZZDimension 8*22*7mm
608 2RSDimension 8*22*7mm

1. Bearing material

Outer ring, inner ring, ball:

High-carbon chromium bearing steel Gcr15(JIS SUJ2,AISI 521000), or stainless steel 9Cr18(AISI 440C)


Steel plates and nylon can be used in general situation, while rubber and stainless steel for special usage.


Steel plate for shield, and rubber for seals

Rings and balls vacuum dealing with treatment of high carbon chromium bearing steel GCR15 is the standard material to produce the accurate internal and external circle and ball. This material is same with the USA AISL 52100, Germany DIN 100Cr6, Japan JISSUJ2.

The standard cage is made of carbon steel by cold, but in-corrosive environment, no parallel, or under high-speed operation, we can use stainless steel, nylon or phenolic resin cage according to customer’s request.

2. Bearing Seal

Bearing seal form into dust cover and plastic material seal. There are various types of seal. Because of different seal material, bearing to adapt condition will also change.

Name CodeCharacteristicsUsing Temperature


Acrylonitrile-butadiene rubber

Oil resistance,heat resistance,resistance to wear-40~120


Fluorine rubber

Hear resistant,acid and alkali resistant and chemicals, oil resistance preferred-20~200


Silicone rubber

Heat and cold resistance, good compression deformation is small, but the mechanical strength is not good-60~230


Polypropylene acid ester rubber

Heat resistance, oil resistance better than NBR, but resistance to water and alkali is not strong-20~150

3. The size of bearing clearance directly related to the use of noise, vibration, normal temperature, service life and the assembly of machinery motion effect. Therefore, it is very important that we choose the suitable assembly bearing clearance. We divided from small to big according to radial clearance range into C2, C0, C3, C4 and C5. Specific reference see the chart:


4. Also can consult the table below choose bearing clearance

The usage situationUse examplesChoose clearance
Strict control noise, vibration installation precision, high positionInstrument and equipmentRoll neck calender Low noise and small motorC2,C0
General load, speed, working temperature is not highTransmission machinery, reducer and other general machineryC0
High temperature, high speed, high requirements for service lifeAutomobile generator and engineC3
Using high temperature environment, should not be the occasion of heatDrying machine, paper making machinery, and so onC3,C4
High temperature, high speed, and large impact load

Vibrating screen, speed gear

Inner and outer ring take the surplus interference, large volume, high temperature, heat dissipationVibration type pressure road, machine car rear wheelC5

5. Bearing can choose diversity of greases. According to the different work environment and bearing operation conditions, we used the following list of grease, in order to convenience for clients to choose. Besides these greases of the listed below, can also add other greases according to the requirements of our customers.

BrandProductsBase oilRange of using temperatureCharacter


Multemp SRLPolyol ester+Diester-50~+150Can effectively restrain the noise, prolong service life
Multemp PSDiester+refined mineral oil-50~+130Suitable for low temperature, and restrain the noise effectively
Multemp SM-BSynthetic hydrocarbon-50~+200Long life in the high temperature operation, appropriate used in low temperature, low torque in high speed running, low noise
Multemp ET-KSynthetic ether+Polyol ester-40≥~+200High temperature condition continued work, having longer life
RAREMAX SUPERNSynthetic oil-30~+200High temperature longevity grease


Polyrex EMMineral grease-40~+180Long life and resist to high temperature
Beacon325Synthetic grease-54~+150Common use grease
Andok CPetroleum oil-27~+120Move smoothly and when minimum sliding, has long service life


Mobile 28Synthetic hydrocarbon-54~+177Wide temperature range and low torque
Mobil HPLithium compounds-30~+110Moderate speed and inhibit the corrosion effectvely
CHEVRONSRI-2Mineral grease-30~+180Wode temperature range, waterproof effect is good
SHELLAlvania 2Mineral grease-35~+120Long life and resist to high temperature
RLQ#2Mineral grease-50~+150Low noise, fast speed, and resistant high temperature
DUPONTKrytox 240ACFluoride grease-35~+290Stability effect is good in high temperature, and lubrication effect is strong
KLUBERASONICSynthetic hydrocarbon-50~+140Low noise, long life and low torque

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