oil-free bushing slide bearing with good quality

oil-free bushing slide bearing with good quality System 1

oil-free bushing slide bearing with good quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 pc

Supply Capability:: 200000 pc/month

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Specifications

oil-free bushing
1,can be work without oil condition
2,low wear,low friction and with long life.
3,low vibration,low noise

oil-free bushing

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.

oil-free bushing slide bearing with good quality

Q: Is a simple answer, the best point in detail, I test graduate students to use, the official written point.: Plain bearings, usually made of bronze or Babbitt, have heavy duty characteristics and require a standing lubrication system to provide lubrication. Light load can be lubricated by powder metallurgy.Ball bearings are usually made of ball bearing steel, which is lubricated with grease and requires regular replacement of the grease. Rolling bearings usually can bear some axial force, but the sliding bearings do not have this function.

Q: Sliding bearings can be used for structural requirements on opposite occasions: 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.. 4. thrust bearing (understand) (1) thrust bearing fixed and tilting. (2) the thrust surface of thrust bearing can use the end surface of the shaft, or can make a convex shoulder or thrust the disc in the middle of the shaft.

Q: What are the structural and functional differences between thrust bearings and radial bearings and conventional ball bearings and plain bearings?: Thrust bearings are called thrust bearings, which can bear axial load (axial thrust), such as some large vertical motors and machine tools.Radial bearings bear radial loads, and these bearings are the most widely used.The above two are two kinds of bearings according to the force direction.Journal bearings and rolling bearings.Plain bearings: plain bearings, both inside and outside the ring, there is no rolling body, usually made of wear-resistant materials. Often used in low speed, heavy load, but also useful at high speed; filling lubricating oil and grease. If the copper sleeve belongs to this low - grease, oil pump, water pump and some other high speed and large fan speed reaches 7, 8K conversion of lubricating oil, the small gap between the shaft and the sliding bearing oil film, so that the sliding bearing and the shaft will not damage and wear.Others, as lianjuan2008 said.

Q: What are the tolerances and finishes for plain bearings and shaft mating surfaces?: 1, the types of tolerance fit into three categories: gap fit (formerly called: dynamic coordination), transition coordination, interference fit (formerly known as: static coordination).2, clearance fit - the shaft and hole there is a clear gap between the coordination, the shaft can be turned in the hole3, the interference fit - there is no gap between the shaft and hole, the shaft and hole close together, the shaft will not be able to rotate alone4, transition coordination between gap fit and interference fit, there may be a gap, there may be interference, such coordination can be used as a precise positioning of the coordination5, when the need to rotate in the hole, choose clearance fit, require relatively large gap H11/c11 (such as: hand mechanism), requirements can rotate, and the gap is not too large demands on the choice of H9/d9 (such as: the idle band with the wheel and shaft), even if the gap with precision select the H8/f7 (such as sliding bearing with)6, if you want the shaft and hole fixed together to rotate, rotate together, to bear the load together with the load, can choose the fit, with little surplus amount can pass relatively small force, relatively large force will make the axis of rotation and hole assembly can be used wooden percussion hammer assembly. With type H7/n6, with large interference can express great force and general press assembly, or by the temperature difference method for assembly, for example: with the train wheel rim and hub, is to use the temperature difference method for assembly interference fit with type H7/z67, the need for precise positioning, but also need to be able to disassemble, such as rolling bearings, inner ring and shaft coordination, outer ring and hole fit, you can choose H7/js6, or H7/k6Hope that the above can help you

Q: When calculating non liquid friction sliding bearings, what is the purpose of checking P, PV, v?: Check the bearing PV is to control the contact surface, not overheating and lead to bonding.Even if the P and PV are within the allowable range, the bearings may suffer excessive wear due to excessive speed of the bearings. In order to make the local PV value not exceed the allowable value, we must check the sliding speed of bearings with light load, high speed and large elastic deformation.

Q: What are the methods of casting plain bearings?: Usually to the metal materials company purchased bearings, bearing bronze (or called Babbitt), many are scrap copper, the use of crucibles, casting sand.

Q: Deep groove ball bearings are better than plain bearings Which one is better?: Deep groove ball bearings use more speed than Rongchang plain bearings, deep groove ball bearings can be used at a high speed.So deep groove ball bearings than Rongchang sliding bearings, but high speed, high precision.

Q: Characteristics of plain bearings: Plain bearings are commonly known as flat bearings. They are simple in form and large in contact area. If the lubrication is kept good, the abrasion resistance will be good, and the bearing life will be long. The sliding bearing has the advantages of large bearing capacity, high rotary accuracy and shock resistance of the lubricating film.

Q: 250 kilowatts of motors, replacement of new bearings, after driving bearing fever, the bearings inside the grease all thrown out What's the matter? Expert answer!: Bearing heating causes:(1) the temperature of motor bearings is high. It is suspected that the gap between the couplings of the equipment is not adjusted properly, and a little vibration causes the excessive temperature rise of the bearings.(2) the rationality of the motor design, manufacturing quality, installation quality, etc..(3) bearing quality problems caused by heating, bearing gap.Bearing (Bearing) is an important component of modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce its friction coefficient (friction, coefficient) during movement, and guarantee its rotary accuracy (accuracy).According to the friction property of the moving element, the bearings can be divided into two kinds: rolling bearing and sliding bearing. Among them, the rolling bearing has been standardized and serialized, but compared with the sliding bearing, its radial dimensions, vibration and noise are relatively large, and the price is higher.Generally, the rolling bearings are composed of four parts, namely, outer ring, inner ring, roller and cage. Strictly speaking, the rolling bearings are composed of six big parts, namely, outer ring, inner ring, rolling body, cage, seal and lubricating oil. Mainly with the outer ring, inner ring, rolling body can be defined as rolling bearings. According to the shape of the rolling element, the rolling bearings are divided into two major categories: ball bearings and roller bearings.

Q: How does a sliding bearing work?: High speed rotating, in the sliding bearing surface, if the lubrication film can be formed to separate the surface of the moving pair,

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