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Cylindrical Roller Bearing N216M

Cylindrical Roller Bearing N216M

    Payment Type: L/C,T/T
    Terms of Trade: FOB,CIF,FCA
    Delivery Time: 70 Days
    Packaging: Standard Export Package
    Brand: NXZ
    Transportation: Ocean,Land,Air
    Place of Origin: China
    Certificate: ISO9001,ISO140001,TS16949
    HS Code: 8482500090
    Port: Yinchuan,Tianjin,Shanghai

Basic Info

Model No.: N216M

Product Description

Cylindrical roller bearings

Some Cylindrical Roller Bearing have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.Cylindrical Roller Bearing N216M are particularly versatile.

Structures

1. N0000 type cylindrical roller bearings without rib on outer ring and NU0000 type cylindrical roller bearings without rib on inner ring

These type of bearings can carry large radial load, rotate at a high speed, there is no limit to axial displacement on shaft or housing, but cannot withstand axial load.

2. NJ0000 and NF0000 types Cylindrical roller bearings with ribs on both of inner rings and outer rings

NJ0000 and NF0000 types of bearings can allow axial displacement on the shaft or housing and carry little single-direction axial load; NU0000+HJ0000 types and NUP0000 type bearings can allow two-direction displacement within axial clearance range on the shaft and housing and carry little double-direction axial load.

3. RNU0000 Type Cylindrical roller bearings without inner rings.

RNU0000 types of Bearing are applicable to the parts with limitation on radial size. The shaft surface can be directly used as raceway surface, the hardness, processing precision and surface roughness should be similar to those of ring raceway.

4.NAL0000 type and NNAL0000 type of long cylindrical roller bearings with double ribs on outer rings are applicable to petroleum machinery.

5.Four-row cylindrical roller bearings FC,FCD and FCDP types are mainly applicable to heavy-duty machines, such as rolling mills. These bearing designations are different from general rule.

Cage material

When the outer diameter is less than (inclusive)400mm, solid brass cage or steel sheet are adopted for single row cylindrical roller bearing. When the outer diameter is more than400mm, brass cage and pin-type cage are adopted for four row cylindrical roller bearing.

Permissible tilt angle

Generally the cylindrical roller bearing shaft is not allowed to be tilted relative to the housing; while for single-row cylindrical roller bearings, when under light load, a relative2`tilt angle is allowed between the inner ring axial line and outer axial line. If the load is larger, the allowable error can be a little more, but should not exceed4`.

Tolerance and clearance

In accordance with requirement, Single Row Cylindrical Roller Bearings can be different tolerance classes. The tolerance value can be finding in the section Rolling Bearing Tolerance. For four row cylindrical roller bearings, the tolerance is normally P0, P6 and P5.

The Radial clearance of cylindrical roller bearing is as attached table 1.

Load-carrying capacity

The load-carrying capacity of cylindrical roller bearings with ribs on inner rings and outer rings are related to the magnitude of the radial load and lubrication methods. The maximum allowable axial load is as following:

Oil lubrication

Grease lubrication

Fap<0.4Fr

Fap-(N);Maximum allowable axial load

K-Factors related to bearing size series

2.3 series K=0.2;

22.23 series K=0.16.

C0r-(N);Basic static load rating

ng-Fr>0.1Cr,

(r/min);For the limit rotational speed of a bearing carrying a purely radial load, when Fr>0.1Cr, use the speed reduction factor to compensate the limit rotational speed.

n-(r/min).Actual operating rotation speed

As the axial load given by the above formula and under the following conditions, bearing with tolerance class 0 (except improved and enhanced types) can function normally:

The temperature of oil lubricate is55℃and grease lubricate is40℃, the highest is90℃. (The viscosity of lubricate oil is ν50=30mm2/s, and the dropping point of lubricate grease is170.)

If the axial load is acted internally, the allowable axial load can be doubled; when acted temporally, the allowable load can be increased by 2 times.

Dynamic equivalent radial load

Pr=Fr

For the cylindrical roller bearing with axial load

2.3

To 2 and 3 series

Pr=Fr+0.3Fa (0≤Fa/Fr≤0.12)

Pr=0.94Fr+0.8Fa (0.12≤Fa/Fr≤0.3)

22.23

To 22,23 series

Pr=Fr+0.2Fa (0≤Fa/Fr≤0.18)

Pr=0.94Fr+0.53Fa (0.18≤Fa/Fr≤0.3)

Static equivalent radial load

P0r=Fr

Table 1 Radial clearance of cylindrical roller bearing with cylindrical bore

μm

Nominal bore diameter d

mm

C2 clearance

Standard clearance

C3

clearance

C4

clearance

C5 clearance

Over

To

Min

Max

Min

Max

Over

To

Min

Max

Min

Max

10

24

30

40

50

65

80

100

120

140

160

180

200

225

250

280

315

355

400

450

10

24

30

40

50

65

80

100

120

140

160

180

200

225

250

280

315

355

400

450

500

0

0

0

5

5

10

10

15

15

15

20

25

35

45

45

55

55

65

100

110

110

25

25

25

30

35

40

45

50

55

60

70

75

90

105

110

125

130

145

190

210

220

20

20

20

25

30

40

40

50

50

60

70

75

90

105

110

125

130

145

190

210

220

45

45

45

50

60

70

75

85

90

105

120

125

145

165

175

195

205

225

280

310

330

35

35

35

45

50

60

65

75

85

100

115

120

140

160

170

190

200

225

280

310

330

60

60

60

70

80

90

100

110

125

145

165

170

195

220

235

260

275

305

370

410

440

50

50

50

60

70

80

90

105

125

145

165

170

195

220

235

260

275

305

370

410

440

75

75

75

85

100

110

125

140

165

190

215

220

250

280

300

330

350

385

460

510

550

-

65

70

80

95

110

130

155

180

200

225

250

275

305

330

370

410

455

510

565

625

-

90

95

105

125

140

165

190

220

245

275

300

330

365

395

440

485

535

600

665

735

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 Xibei Bearing Co., Ltd. is located in the Yinchuan city, the capital of Ningxia province. Its predecessor, the Xibei Factory was founded in the depths of Helan Mountain in 1965. From 1982, it moved to Yinchuan city, and builds a modern factory in the Yinchuan city. It makes a positive contribution to the revitalization of bearing industry in China.Xibei Bearing Co., Ltd. is one of the biggest bearing manufactories in the west of China, one of the leading companies in bearing industry. It has certificate for the Exemption for the Export Inspection and its NXZ trademark is the Chinese well-know mark.Located In the northwest of China, Xibei Bearing Co., Ltd. orientate to equip China and service to the world. During the course of development, Xibei Bearing Co., Ltd. continuously accumulates experience, pioneering and innovative, forge ahead with determination. In accordance with the international standard and customer`s special requirement, Xibei Bearing can produce more than 6000 varieties of bearing standard and non-standard with outside diameter from 40mm to 3500mm. NXZ bearing is widely used in rail transit, military industry, precision motor, petroleum machinery, metallurgy machinery, heavy truck, construction machinery, mining machinery, cement machinery and hydraulic engineering, etc., and well sold all over China and export to over 50 countries and regions, such as Europe, America, Asia, Africa, etc. Xibei Bearing Co., Ltd. has National Enterprise Technical Center, postdoctoral scientific research workstation, and union engineering laboratory by local with state for large special bearing. There are abundant technical strength, first-class new product research & development, technology innovation ability, perfect technical innovation and product development system. It`s research and develops more than 200 kinds of new products per year on average. Research and development of oil drilling bearing 30228/630Q won the national quality gold medal. NXZ research & development and manufacturing process is leading level large special bearing. Products are successfully applied to the shenzhou V, Shenzhou VI launch monitoring device. Company has more than 500 kinds of products have filled the country blank space; nearly 1000 kinds of products reached the international advanced level.Xibei Bearing Co., Ltd. has all kinds of professional and technical personnel more than 300, including over 90 senior professional and technical personnel, with eight enjoy state council allowance, four enjoy the Ningxia autonomous region government subsidies, one is in the state [Bai qian wan project", and two are postdoctoral. Xibei Bearing promises the concept of [Customer First, Quality first" has successively passed the ISO9001 quality management system, ISO14001 environment manage system, ISO10012 metering management system, GJB9001B military quality system, ISO/TS16949 automotive quality system certification, and is national first-class metrology unit.Xibei Bearing Co., Ltd. possesses all kinds of equipment and test equipment of 2500 sets, in which, 425 sets are [large, precise and high-tech" equipment. It can supply the informatization and intelligentized process equipment to customer with higher quality product in bearing industry.Xibei Bearing Co., Ltd. makes the best of existing well-know mark, the advantage of the technology, resources and market, according to the [Made in China 2025" Strategy, promoteing high technology content, high value-added, high precision, high reliability bearing product. In Yinchuan state-level economic and technological development zone plans and constructs the first-level high-end bearing industrial base with digital, intelligent, informatization, greenization as the target. Xibei Bearing will be built into the biggest high-end bearing base in the West of China for research and develop, test and intelligent high-end base, the domestic first-level export high-end export base, fulfilled industry transformation and updating fulfill the capacity of annual output high-end equipment bearing for rail transit, military machinery, precision machinery, wind power, petroleum machinery, metallurgy machinery, mining machinery and heavy truck.

Company Info

  • Company Name: Xibei Bearing Co.,Ltd.
  • Representative: Mr Zhao
  • Product/Service: Bearing , Railway Bearing , Petroleum Bearing , Metallurgy Rolling Mill Bearing , Heavy Truck Bearing , Construction Machinery Bearing
  • Capital (Million US $): 372,440,000RMB
  • Year Established: 1965
  • Total Annual Sales Volume (Million US $): US$50 Million - US$100 Million
  • Export Percentage: 1% - 10%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: Above 20
  • No. of R&D Staff: Above 100 People
  • No. of QC Staff: Above 100 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): Above 100,000 square meters
  • Factory Location: No.630,Beijing West Road, Yinchuan, Ningxia 750021, China
  • Contact Person: Ms. Jane Li
  • Tel: 86-951-2020454
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