• Double Row Bearing Deep Groove Ball Bearing System 1
  • Double Row Bearing Deep Groove Ball Bearing System 2
Double Row Bearing Deep Groove Ball Bearing

Double Row Bearing Deep Groove Ball Bearing

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4312 ZZ double row bearing deep groove ball bearing

Deep groove ball bearings are particularly versatile. They are simple in design, non-separable, suitable for high and very high speeds and are robust in operation, requiring little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available from TIANHE in many designs, variants and sizes.

In addition to the bearings presented in this section, deep groove ball bearings for special applications are shown under Engineered products.



1.PTFE with fibre 0.01~0.03mm 

2.Porous bronze 0.2~0.3mm 

3.Steel backing 0.7~2.3mm 

4.Tin-plating 0.005mm or copper plating 0.008mm 



Load capacity               140N/mm2 

Temperature                 -195°C ~ +280°C 

Speed limit                    5m/s 

Friction coef(u)              0.04~0.20 

PV Limit(Dry)                 3.6N/mm2 .m/s 



1.PTFE and fibre can protect the shaft while in operation. 

2.It is suitable for the machine required harmless to people because 

of Lead-free. 

3.Goodload capacity and anti-wear. 

4.Bronze and steel have good thermal conductivity. 

5.Anti-corrosion because of surface plating. 

6.It is widely used in general machines,and suitable for food machine,pharmaceutical 

machine,tobacco machine etc.It will subsitute SF-1 series bushings in future because of environment protection. 



Q:Brief introduction of oilless plain bearings
Bearing Sliding (Oilless) is a type of bearing that operates under sliding friction. Without oil sliding bearings, self lubrication can be realized through design, and the work is stable, reliable and noiseless. Under the condition of liquid lubrication, the sliding surface is separated by the lubricant without direct contact, and the friction loss and surface wear can be greatly reduced. T
Q:What is the cause of oil leakage in high pressure motor bearings (plain bearings)?
The reasons for the oil leak in the bearing of the high voltage motor (sliding bearing) are as follows:1, structural and processing reasonsThe structure of shaft seal is not perfectThe bearing seat and tile joint surface deformationPoor seal designTile in the tile seat at the end of the gap between the size of the gap, there is no oil tank, oil seal two, the joint surface gap, tile at both ends without oil blockOil ring processing quality is not enough, the oil ring is uneven: size does not match
Q:What are the properties of plain bearing materials? Are there any materials that can satisfy these properties simultaneously?
3. radial sliding bearing (1) integral and split division is usually made up of bearing cap, bearing seat, bearing bush and connecting bolt. (2) the Bush is the key part in the bearing. Bearing materials should have small coefficient of friction, good thermal conductivity, small coefficient of thermal expansion, wear resistance, corrosion resistance, strong adhesive resistance, sufficient mechanical strength and plasticity. (3) requirements for bearing materials: bearing alloy (Babbitt), bronze, bearing materials of special properties, etc..
Q:There are sliding bearings and rolling bearings in motor bearings. What's the difference between them?
Plain bearings are of high accuracy and small series. They are generally used in large equipment.Rolling bearings are used on small equipment
Q:What are the commonly used sliding bearing bushing materials
(3) oilless bearings. It is a kind of porous material which is made of bronze and cast iron powder, pressed by heavy graphite, and sintered by high temperature. It is often used in low or medium speed, light load and inconvenient lubrication.(4) nylon. Nylon, nylon 6 and nylon 1010 are commonly used. The nylon bearing has the advantages of good running and good quality, soft fragments after wear, no damage to the shaft neck, good corrosion resistance, etc. the heat conductivity is poor, and the water can swell when the water is absorbed.
Q:Do you have a standard model?I design a rotating pan head, the motor is a cantilever state, the motor shaft is particularly easy to bend, want to add a sliding bearing on the shaft, but the sliding bearings know too little, help ah!
See how large your specifications, linear sliding bearing IKO is better, there are standard products. You will see the thickness of the shaft, can contact our company 51105080-103, Shanghai sidaquan Bearing Co. Ltd.
Q:Establishment of oil film bearing capacity of dynamic sliding bearing and several conditions to ensure full liquid lubrication
Establish three conditions: relative speed, reasonable wedge, adequate lubrication. This is a necessary condition.There is only one condition for complete liquid lubrication: the minimum oil film thickness is greater than the sum of the roughness of the shaft and bearing table.
Q:What are the failure modes and design criteria for non liquid friction sliding bearings?
Failure form: wear, scuffing.Design guidelines: maintenance of the boundary membrane is not damaged, minimize the wear of bearing materials.Relative condition checking1 checking: PM = [p], to prevent excessive bearing abrasion;2 checking: PMV = [pv], in order to prevent the bearing temperature rise too high and glue and;
Q:What is a sliding bearing alloy?
1, sufficient strength and hardness; 2, high wear resistance and small friction coefficient;
Q:How to distinguish sliding bearings and rolling bearings?
Rolling bearings are relatively moving parts with rolling bodies for rolling bearings.

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