• 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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Shanghai
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Min Order Qty:
500 pc
Supply Capability:
200000 pc/month

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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.

 

Material                                                                                                                                                                                                                                                                 

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 

                                                                                            

Technical

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 

                                                                                                                                                                                                                 

Application  

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:What kind of lubrication is used for spindle bearings of important or precision machine tools?
Precision machine tools bear less load, grease selection is a secondary factor, but temperature rise is an important issue, must be strictly controlled. General precision machine tool spindle temperature rise at 10 degrees right. It has been reported that when the product of the bearing bore D (mm) and the spindle revolution n (R / min), such as 1 * 106, it can be lubricated with synthetic grease. At present, there are two main structural forms of spindle roller bearing for the coordinate boring machine at home and abroad, namely roller bearings and roller cone bearings, for 1. axis boring machines. Coordinate boring machine using roller bearings, such as T4240, T4163, etc., and the main shaft and the bearings are in interference fit. Therefore, the selection requirements of grease lubricated low viscosity base oil preparation, such as No. 2 low temperature grease, in order to ensure the spindle temperature rise is low; the rolling cone bearing coordinate boring machine, such as SIP 6A, SIP 8P, a DIXI 75, T4280A, T42100, T4263 and so on, all these boring machine spindle lubrication use grease lubrication.
Q:How do I move the plain bearings?
Sliding bearings and shafts are sliding friction, the sliding bearing itself is a whole, there is no relative movement of ~!
Q:Can self lubrication plain bearings bear both axial and radial loads?
Bearing type is different, the load is not the same.Self lubrication bearings, in fact, are the same as plain sliding bearings, but are designed to lubricate themselves, so they can bear axial and radial loads. General bearings can withstand two-way load, but just to accept the size is not the same.
Q:If the minimum oil film thickness is not large enough, which measures are most effective: reducing the width to diameter ratio; increasing the oil supply; reducing the relative gap; increasing the eccentricity. And explain the reasons
Decrease relative clearance. Because the rest is wrong, only this point.
Q:How does a sliding bearing move at work?
In order to improve the friction properties of the bearing surface, the antifriction material layer, which is cast on its inner surface, is called the bearing lining. Bearing and bearing lining materials are collectively referred to as journal bearing materials. The application of sliding bearings is usually under the condition of high speed and light load.
Q:What is the performance of plain bearings?
Oh, just as I used to work as a technician in a miniature bearing factory for years. Rolling bearings rely on ball bearings to reduce resistance and support rotation; the sliding bearings depend on the clearance of the bearing bush to reduce resistance and support rotation. Journal Bearing
Q:What are the advantages and disadvantages of plain bearings and rolling bearings?
(1) types and characteristics of plain bearings1. the sliding bearings are divided according to the load:(1) radial sliding bearing (radial sliding bearing), mainly bearing radial load;(2) thrust bearings are mainly subjected to axial load2. sliding bearings are suitable for low speed, high precision, heavy load and structural requirements.
Q:0 what are the friction states of plain bearings? What are the main differences between them?
The sliding bearing has a friction state1. radial movement of friction, rotation
Q:What are the criteria for calculating the failure modes of non liquid lubricated journal bearings?
Wear: wear, so that the gap between the increase, the clearance of the ambassador normal operating conditions damage, noise.
Q:Structure of sliding bearing
When sliding bearings work, sliding friction occurs; the magnitude of rolling friction depends mainly on the manufacturing accuracy; and the size of the friction force of the sliding bearing depends mainly on the material of the sliding surface of the bearing. Plain bearings generally work with self lubrication functions; plain bearings are divided into non-metallic sliding bearings and metal sliding bearings in accordance with material.Non metal sliding bearing mainly plastic bearings, plastic bearings are generally made of relatively good performance of engineering plastics; more professional manufacturers generally have the self lubrication engineering plastics modification technology by fibers, special lubricants, glass beads and so on engineering plastics self lubrication modification to achieve certain performance. And then use the modified plastic into plastic self lubricating bearing by injection molding.

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