Angular Contact Ball Bearing for Steam Turbine-generators

Angular Contact Ball Bearing for Steam Turbine-generators

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 10 PCS

Supply Capability:: 200000 PCS/month

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Specifications

QJ238M Angular Contact Ball Bearing for steam turbine-generators
1.High precition and long life
2.high quality

QJ238M Angular Contact Ball Bearing for steam turbine-generators

Angular contact ball bearings are particularly suitable for carrying combined (axial and radial) loads. Sometimes, they also can carry pure axial load and operate in higher speed. Under radial load, axial component force will be produced which must be counteracted. So the bearings are normally adjust against a second bearing.

Four Points Angular Contact Ball Bearing product specifications

Bearing NO.	Size(mm)			weight(kg)
Bearing NO.	d	D	B	weight(kg)
QJ206M	30	62	16	0.24
QJ207M	35	72	17	0.36
QJ208M	40	80	18	0.45
QJ209M	45	85	19
QJ210M	50	90	20	0.52
QJ211M	55	100	21	0.77
QJ212M	60	110	22	0.99
QJ213M	65	120	23	1.2
QJ214M	70	125	24	1.32
QJ215M	75	130	25	1.45
QJ216M	80	140	26	1.85
QJ217M	85	170	28	2.25
QJ218M	90	160	30	2.75
QJ219M	95	170	32	3.35
QJ222M	100	180	34	4.05
QJ224M	120	215	40	6.95
QJ226M	130	230	40	7.75
QJ228M	140	250	42	9.85
QJ230M	150	270	45	12.5
QJ232M	160	290	48	15.5
QJ234M	170	310	52	19.5
QJ236M	180	320	52	20.5
QJ238M	190	340	55
QJ244M	220	400	65
QJ246N2M
QJ252N2M	260	480	80

Angular Contact Ball Bearing for Steam Turbine-generators

FAQ:

Q:What's my consideration when I choose a bearing?

A:- The type and size of bearing you need.

- The quality or application you prefer.

Q: What's bearing's advantage.

A: - Substantial inventory, unified quality control,save much cost and time for customers.

Q: What's your guarantee on quality problem?

A: - Free to change in 2 month and in your next order,10% value of order can be paid after receiving goods and checking out no quality issues.

Q: Can I be a distributor of TIANHE?

A: Of course you can.

Q:What are the benefits of being a TIANHE distributor?

A:-Special Discount

-Marketing Protection

-Priority Delivery than other orders.

-Point to point technical supports and after sales services.

Q:How can I become a distributor of TIANHE?

A: Contact us immediately for further details by sending us an inquiry.

Packaging & Delivery

Packaging Details:	in cartons or as per customer's requirements
Delivery Detail:	25-30 days after getting the deposit

Q:Factors determining the stability of plain bearings: The function of lubricant is to reduce friction, reducing wear, cooling and vibration absorption, a lubricant liquid solid and gas and semi solid, liquid lubricant called lubricating oil, semi solid, at room temperature in oil paste is grease. Lubricating oil is the main lubricant. The main physical performance index of lubricating oil is viscosity, which indicates the internal friction properties of liquid flow, and the greater the viscosity, the worse its flowability. Another physical property of lubricating oil is oiliness, which represents the adsorption ability of lubricating oil on the metal surface. The greater the oil, the stronger the metal adsorption capacity, the more likely the oil film to form. The selection of lubricating oil should take into account the bearing capacity, journal speed, lubrication mode, surface roughness of sliding bearing, and other factors. The general principles are as follows: 1. in the high speed and light load working conditions, in order to reduce the friction loss of lubricating oil viscosity can be selected;

Q:Is the high or low pair of plain bearings and shafts?: We (Jiaxing solid) is the production of sliding bearings, but do not understand what you mean hungry.

Q:The service life of a sliding bearing can theoretically be infinite, but this is not necessarily the case because the conditions of use can not be ideal. I want to know how long the actual life of the sliding bearings is The longest sliding bearings that I have come into contact with are the bearings (dynamic lubrication) of two Japanese roller mill spindles, which have been used here for about 30 years without any repairs.: This is the basic lubrication and wear theory problems, according to the oil wedge model, dynamic oil film bearings, as long as the start well, in theory, there is no wear, the general axle is in the semi dry friction state, according to the load, wear and tear of different,

Q:What are the main failure modes of plain bearings?: (2) for high speed bearings, the overheating of the work surface will also cause failure. Therefore, besides the life calculation, the limit speed should also be checked.

Q:What is the performance of plain bearings?: Heavy load and low speed are suitable for occasions where the impact load is increased, the installation is difficult, and the lubrication conditions are not ideal

Q:What's the difference between plain bearings and oilless bearings?: 5, easy sealing, easy maintenance; 6, do not need useful non-ferrous metals; 7, high degree of standardization, mass production, low cost.Compared with plain bearings, the disadvantages of rolling bearings:1, the ability to withstand shock loading is poor; 2, high speed and heavy load bearing life is low; 3, vibration and noise is larger; 4, radial size than sliding bearings.

Q:Sliding bearing is a kind of friction bearing, according to its friction state can be divided into what?: Sliding bearings are suitable for high requirement or special requirements of the occasion, such as: (1) high speed, heavy load (2), (3) rotary precision is high, (4) under the huge impact and vibration, (5) bearing structure needs to be split, (6) the radial size small etc.. (2) rolling bearings, rolling bearingsThere are rolling bodies in the running, there is rolling friction in the bearing, and compared with the sliding friction, the rolling bearing friction coefficient and wear less.

Q:Sliding bearings, according to their friction state, why bearings and what?: To sum up, fluid friction, also known as fluid lubrication, is the most ideal working environment of the journal. Long term high speed rotating machines shall ensure that the bearings operate under fluid lubrication conditions. In practical use, many friction pairs are in a mixed state of dry friction, boundary friction and fluid friction, known as mixed friction (or incomplete fluid friction).

Q:They are three, who has a relative movement with whom, who is relatively static between them? What are their order from inside and outside?: The bearing bush is a kind of plain bearing. The axle diameter refers to the diameter of the axle.

Q:What will cause the friction coefficient to be inaccurate in a hydrodynamic sliding bearing?: The gap between the shaft and the hole, the shaft speed of these two factors is more critical, gap control is not good, there is no way to form a good oil film, that is, can not form a complete liquid friction

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