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 are the principles of plain bearings and plain bearings?: 3. low carbon steel provides good load-carrying and heat transfer action.4. copper / tin electroplated coating 0.002mm makes it better corrosion resistance.

Q:What is the speed of plain bearings?: 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:Which is good, rolling or sliding bearings?: 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.Generally, the rolling bearings consist of the outer ring, inner ring, roller and cage.

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: Reducing the aspect ratio, B/b and decreasing the aspect ratio, the load-carrying capacity of the bearing decreases, while the oil film thickness is inversely proportional to the load-carrying capacity, while the relative clearance decreases and the film thickness is reduced

Q:Failure forms of plain bearings, failure forms of plain bearings: 3., stick (glue): temperature rise + pressure + oil film rupture welding;4. fatigue spalling: load repeated action fatigue crack expansion crack;

Q:Are the motors sliding bearings at both ends?: In general, both ends of the motor are using deep groove ball bearings, large motors such as 1000KW or more will generally use sliding bearings, also known as bearing.

Q:What are the components of plain bearings?: 1 integral radial sliding bearings (bearing housings, integral bushings, oil holes, threaded holes)

Q:Bearing bearing belongs to what type of: Bearing bearing belongs to the type of internal combustion engine.The bearing of an internal combustion engine is a sliding component in the sliding bearing of an internal combustion engine. The shape of the Bush is a semicircle cylinder shaped like a tile, called a bush. Because of the heavy weight of the internal combustion engine shaft, the needle roller (bead) bearings can not be used, but only sliding bearings can be used.When the sliding bearing is working, a thin oil film is required between the Bush and the rotating shaft to lubricate the sliding bearing. If due to bad lubrication, there is direct friction between bearing and shaft friction will produce high temperature, while the bearing is due to the special high temperature resistant alloy material, but high temperature direct friction on the burn is still. The Bush may also be burnt due to excessive load, high temperature, impurities or abnormal viscosity of lubricating oil. The plain bearing is damaged after burning the tile.The bearing load in the bearing is composed of sliding bearings, so called single sliding bearing them there is no difference, as Bush is concerned, in order to reduce friction and wear, so use copper alloy, copper base aluminum tin alloy, tin alloy, Babbitt and so on, they are not standard.

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.Bonding: friction heating causes the oil temperature to rise, the viscosity of the oil drops, and the lubricating conditions deteriorate, resulting in scuffing.

Q:Structure of sliding bearing: The metal sliding bearing is the most used three layer composite bearing, the bearing is generally based on carbon steel substrate by sintering technology in steel plate on the first layer of spherical copper powder sintering, and then on the copper layer on the sintering of PTFE lubricant layer is about 0.03mm; the middle layer spherical copper main role is to enhance the bonding strength between steel plate and PTFE, in the course of work also plays a certain role in bearing and lubrication.

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