Thrust Cylindrical Cearings 2015 New Product Free Sample

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Model Tyoe.:	Cylindrical Roller Bearing
Brand:	TIANHE,UBC
Types:	N,NJ,NU,NF,NUP
Material:	Chrome Steel,
Cage:	E,M,L1,Q1,V,P
Clearance:	C2,C0,C3,C4,C5
Temperature:	S0,S1,S2,S3,S4

Service:	change service during 1 year
Package:	TIANHE commercial packing
Application:	Medium and large motors,electric generator, internal combustion engine,gas turbine,machine tool spindle,reduction gear,Mill handling machine and other kinds of industrial machinery.

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

Q: What is the selection principle of grease for plain bearings?: 2. Selection of grease for sliding bearingsLoad 1-6.5MPa, shaft neck circumference speed below 1m/s, the maximum working temperature of 50-100 DEG C, the No. 2 lithium greaseLoad > 5MPa, journal circumferential speed 0.5m/s, maximum operating temperature 60 DEG C, roll No. 2 calender greaseThe load is less than 1MPa, the circumferential speed of the journal is below 1m/s, the maximum working temperature is 75 DEG C, and the No. 3 calcium base grease is usedLoad 1 - 6.5MPa, journal circumferential speed 0.5-5m/s, maximum operating temperature 55 DEG C, and use No. 2 calcium base greaseLoad > 6.5MPa, journal circumferential speed 0.5m/s below, maximum working temperature 75 DEG C, choose No. 3 calcium base greaseThe load is less than 6.5MPa, the shaft neck circumference speed 0.5-5m/s, maximum working temperature of 120 DEG C, the No. 2 lithium greaseLoad > 6.5MPa, journal circumferential speed 0.5m/s below, maximum working temperature 110 degrees, choose 2 calcium sodium base greaseCalcium base grease should be considered when the temperature is 75-120 degrees centigrade in humid environment;The working temperature should be below 75. The calcium base grease No. 3 should be considered. If not, the aluminum base grease can be used instead;The temperature at 110-120 DEG C, available barium grease or grease, lubrication, consistency to be smaller.

Q: What kinds of checks should be carried out for the design of non full liquid friction sliding bearings? Explain why, what does the PV value mean?: PV is the product of a certain bearing and bearing in line speed conditions and the PV value is inversely proportional to the service life of the bearing;

Q: What material is suitable for sliding 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: One hundred and twentyAttention is the reason and purpose, the postgraduate entrance examination urgent need, thank you answer, after the exam will be re points, thank you!: Reason: when the sliding bearing works, the friction power will change into heat, so that the temperature of the lubricating oil will rise.

Q: What are the structural types of radial and thrust dynamic journal bearings?: There are many kinds of sliding bearings, which can be divided into two kinds of radial (Xiang Xin) sliding bearing and thrust (axial) sliding bearing according to the direction of bearing load.Sliding bearings can be divided into integral and partial and integral type sliding bearings with bolts connected with the frame. The bearing seat hole pressure, the bearing seat is arranged on the top of an oil sleeve on the oil hole. The integral sliding bearing is simple in structure, but the bearing clearance can not be adjusted when the working surface of the bearing is too large. The journal can only be loaded from the end. Split sliding bearings are mainly composed of bearing housings, bearing housings, split upper and lower bearings.

Q: What are the tolerances and finishes for plain bearings and shaft mating surfaces?: Tolerances and surface roughness of mating surfaces of plain bearings and shafts:1. milling machines, drilling machines and lathes, gear reducer and worm gear reducer using sliding bearings, sliding bearing holes and shaft outside circleMatching H7/f7; surface roughness: sliding bearing bore Ra0.8, outer circle Ra0.8---Ra0.4.2. motors, centrifugal pumps, fans, steam engines, sliding bearings used in crankshaft and connecting rods of internal combustion engines, sliding bearings, bores, and shaftsMatching H9/f9; surface roughness: sliding bearing bore Ra0.8, outer circle Ra0.8---Ra0.4.3. agricultural machinery use of sliding bearings, sliding bearing holes and shaft outer circle, select H11/d11;Surface roughness: internal bore of sliding bearing Ra1.6, outer circle Ra3.2---Ra1.6.

Q: Failure forms of plain bearings, failure forms of plain bearings: Failure modes of plain bearings1. abrasive wear: hard particles - abrasives - grinding shaft and bearing surface;2. scratch: shaft surface, hard outline, peak scraping bearing;

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 are the main applications of plain bearings?: 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. The application of sliding bearings is usually under the condition of high speed and light load.For example: construction machinery, marine equipment, water conservancy projects, aviation, aerospace, railways and other fields.Compared with rolling bearings, plain bearings have the characteristics of high bearing capacity, good seismic resistance, stable and reliable operation, low noise and long service life.

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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