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: What is the friction between the shaft and sleeve of the sliding bearing?: 3, boundary frictionWhen the two relative to the sliding surface of the sliding bearing lubrication exists, the adsorption effect of lubricating oil and the friction surface, the boundary film a very thin layer formed on the friction surface, it can withstand high pressure without damage. The boundary of oil film thickness is smaller than a micron, not enough to bring the two friction surfaces are separated, so the relative sliding friction surface, two micro spike will meet the oil film cut, the formation of direct contact with local metal, so this state is called the boundary friction. In general, the boundary oil film covers most of the friction surface. Although it can not completely eliminate the direct contact between two friction surfaces as completely liquid friction, it can play a role in reducing wear and tear. The friction coefficient of this state is f =0.008 to 0.01.

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: where is it used in general, and some concrete examples are given: Generally used in the direction of output force is not very stable at medium and low speed conditionsSelf-aligning ball bearings: self-aligning ball bearings are cylindrical and tapered bore two structures, cages are made of steel plates, synthetic resins and so on. The utility model is characterized in that the outer raceway is spherical in shape, and has an automatic adjusting heart, which can compensate for errors caused by different degrees of flexibility and axial deflection, but the relative inclination of the inner and outer rings shall not exceed 3 degrees.

Q: What are the factors associated with the oil film pressure of dynamic sliding bearings?: 1) a convergent wedge gap must be formed between the two surfaces that are relatively sliding

Q: lead and antimony, because of its good wear resistance, high plasticity, good running performance. What is meant by running fit here? Thank you!: Refers to the ability to work with the spindle neck to adapt to the working environment, especially after the new model or operation has just started. After the running in period, the plain bearing and the shaft neck do not change together.

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: What is Babbitt, bearing pad why plating Babbitt.: In the face of Babbitt opened the examination revealed a large area of black, is this because of lubricating oil, or Babbitt materials in long-term operation will appear after the table black, the lubricating oil pressure of 2.5 kg, the temperature is 45-49 degrees. Oil No. 68.

Q: 10kV High Voltage Motor how to distinguish between rolling and sliding bearings, preferably pictures: Rolling bearing for general motors, motor for sliding bearing is bearing, bearing oil supply to external specialized equipment, give the bearing oil, then start the motor, otherwise it will burn out the bearing, the easiest way is to look at the outside has not given the bearing oil equipment, there is no sliding bearing, rolling bearing is. Understand so much, draw lessons from.

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: I mean, how do you install the large equipment? Can you tell me in detail?: First of all, rolling bearings are easy to slideRolling into the general bearing position to be in place.Large equipment, plain bearings, very precise. First painted look and the axis of the contact pressure is required to do according to the clearance bearing and shaft in general adjustment times.If you haven't done it, you'd better ask someone to do it. If your head once afraid not this kind of equipment is very expensive. The motor and the machine are to be connected by meter.Bearings are now generally not adjusted by scraping pads.

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