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: while the automobile wheel shafts and reducer gears use rolling bearings?: The reason is very simple, in general requirements under the condition of rolling bearing performance than the sliding bearing a lot of excellent, so generally use rolling bearing, why crankshaft sliding bearing, the rolling bearing is forced, because there is no way to go above can be mounted to the crankshaft, the crankshaft is curved to bend to. The rolling bearing is impossible to install crankshaft inside the spindle neck, unless it is a single cylinder crankshaft. If you want to install the crankshaft rolling bearing must be decomposed, become assembled crankshaft can be assembled by a rolling bearing, but generally can only be used on a single cylinder engine crankshaft, such as motorcycle crankshaft, rolling bearing is used, then V type double cylinder cylinder can also be used for rolling bearings, twin cylinder in-line with rolling bearing assembly of the crankshaft, which is generally small gasoline engine for motorcycles. But the car is generally at least 3 cylinder, 4 cylinder common assembled crankshaft will do, can not guarantee the accuracy and performance of the crankshaft, can only do the crankshaft, then rolling bearing will not be installed, can only be installed because of sliding bearing, sliding bearing can be split, very easy to install on the crankshaft.Finally, if appropriate lubrication, the performance of sliding bearing is rolling bearing can not be compared in many aspects, such as the crankshaft in this place, good design would cause to become dynamic pressure bearing sliding bearing. High efficiency and high speed and high carrying capacity will be achieved. In other words, high speed crankshaft is better than sliding bearing in performance.

Q: How to determine the length of journal bearings?: First, the pressure on the bearing (ie the pressure of the Bush); two, speed (forming the conditions of the oil film); three, machining accuracy;

Q: Sliding bearings relative clearance 0.001 what?: Accuracy should be up to 0.001 of the standard

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: The self-aligning ball bearings, used in the shaft and the bearing chamber is not concentric, many mechanical equipment are used, but the standard load is relatively small, if the load is large, recommend the use of self-aligning roller bearing, I hope to help you

Q: What's the difference between plain bearings and oilless bearings?: Compared with plain bearings, the advantages of rolling bearings:1, the general condition, the rolling efficiency and hydrodynamic bearing lubrication bearing, but higher than the mixed lubrication bearing; 2 radial clearance is relatively small, the centripetal angular contact bearing preload available available pretightening force to eliminate the clearance, operation and high precision; 3, for the same size of the shaft diameter, bearing width ratio the sliding bearing is small, the axial structure of machine is compact; 4, most of the rolling bearing can be both radial and axial load, the bearing assembly has the advantages of simple structure, less consumption of lubricants;

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.

Q: What is Babbitt, bearing pad why plating Babbitt.: Babbitt is the most widely known bearing material, and its application dates back to the industrial revolution. Babbitt is only suitable for relative to the low hardness of shaft material, compared with other bearing material, has better adaptability and swaging, widely used in large marine diesel engine, turbine, generator, and other large rotating machinery. Babbitt alloys can be simply divided into three types: high tin alloys, high lead alloys and intermediate alloys (both tin and lead in alloys are very important). In all these alloys, both antimony and copper are important alloying elements and hardening elements, and the structures are composed of hard intermetallic compounds dispersed in the soft matrix

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 are plain bearings, roller bearings, roller bearings, needle roller bearings?: Needle bearing roller bearings are cylindrical roller, relative to its diameter, the roller is thin and long. This roller is called needle roller. In spite of the small cross section, the bearing still has a high load capacity, so it is especially suitable for radial space limited occasions.

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