Hydraulic Cylinder bushing of chinese manufacturer

Hydraulic Cylinder bushing of chinese manufacturer System 1

Hydraulic Cylinder bushing of chinese manufacturer

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 pc

Supply Capability:: 100000 pc/month

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Specifications

Hydraulic Cylinder bushing (SF-1D)
1.steel backing,sintered porous bronze,PTFE layer
2.oilless,self-lubricating
3.low wear

Hydraulic Cylinder bushing (SF-1D) introduction:

1. Hydraulic special bearings is a new type op material, which in basis of SF-1P and designed in principles of oil and shock absorber. it become more wear-resisting under breaking off the lubricating oil .these products also particularly suitable for the frequent reciprocating motion besides having the advantages of SF-1P.

2. Its properties is similar to that of the foreign product designated as DP4,Currently the product gradually replace SF-1P,applying to auto shock absorber, hydraulic cylinders and other various fields.

Load capacity 120N/mm²

Max Speed 2m/s

Friction Coefficient 0.04~0.20

PV Limit (dry) 3.6N/mm² m/s

PV Limti (oil) 50N/mm² m/s

Temperature Limit -195^oC ~+270^oC

Why use Cast brass Bearing?

long service life and maintenance-free

High load capacity

High wear resistence

low coefficients of friction

Good heat conductivity

High corrosion resistence

Hydraulic Cylinder bushing of chinese manufacturer

Q:What copper is used to produce plain bearings for machine tools?: according to the use conditions according to a certain proportion in the work surface processing hole and fill in the solid lubricant, copper alloy high strength provides high capacity and can form a solid lubricant friction low side.

Q:Are plain bearings grease lubricated?: There are many kinds of sliding bearings, from lubrication methods can be divided into two types of hydrostatic lubrication and dynamic lubrication.Hydrostatic lubrication is to rely on lubrication is the system's oil pump pressure, so that the oil into the lubrication point. Due to the external pressure by the formation of oil wedge, oil film thickness, thus can produce or avoid starting impact of dry friction, wear a small (friction coefficient is 0.001), compared with the dynamic pressure bearing, can use slightly low viscosity lubricating oil.Dynamic pressure bearing is the rotation of the shaft, the use of lubricating oil to produce oil wedge force, the formation of fluid mechanics, dynamic oil film.

Q:How many times does the clearance of the sliding bearing take the diameter of the axle?: The range of sliding bearing clearance according to the use of precision parts to determine,

Q:What is the speed of plain bearings?: The speed is unpleasant. But copper sleeves are generally not recommended. Because of the wear and tear, and how much radial load you need, you also need to confirm. The position of the oil free bushing is generally used for more accurate straight-line slip. But the rotation still gives priority to bearings. Or simply use linear bearings.

Q:What are the common faults of plain bearings?: (2) bearing cavitation sliding bearing in cylinder pressure under repeated impact load), the surface layer of plastic deformation and local deformation of cold hardening, loss of ability, and gradually form a pattern and continue to expand, and then with the shedding of debris, the loading surface layer forming hole. In general, pitting occurs when pitting occurs, and then the dimple gradually expands and causes cracking of the alloy layer interface. The cracks extend along the parallel direction of the interface until it is peeled off. The main reason for bearing cavitation is caused by sudden change of strong oil flow disorder cross-sectional oil groove and an oil hole structure elements, the formation of bubbles in the vacuum oil flow disorder, then the pressure generated cavitation bubble collapse. Cavitation usually occurs in the high load areas of bearings, such as the lower bush of the crankshaft main bearing.

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's the connection between the crankshaft and the sliding bearings?: The crankshaft bearing is split sliding bearing is installed in the main bearing crankshaft, connecting rod and crankshaft support operation, is to open sliding bearing is mounted on the connecting rod hole and crankshaft crank shaft (connecting rod), the connecting rod is connected with a crankshaft.

Q:The sliding bearing consists of several parts. What are the parts?: Sliding bearings (sliding, bearing) bearings that work under sliding friction. Plain bearings work smoothly, reliably and without noise. 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. The oil film also has a certain vibration absorption capacity. But the starting friction resistance is larger. The shaft supported by the bearing is called the journal, and the part that matches the journal is called the bush. 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. Sliding bearing applications are generally under low speed heavy load conditions, or maintenance and lubrication of the difficult parts of the operation.

Q:Deep groove ball bearings are better than plain bearings Which one is better?: The precision of deep groove ball bearings is better than that of plain bearings in Rongchang, and the accuracy of sliding bearings is not as high as that of deep groove ball bearings.

Q:Failure forms of plain bearings, failure forms of plain bearings: 5. corrosion: oxidation of lubricant to acid substance corrosion.

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