Gold Member Since 2016
Demek Bearing Group Co., Ltd.

Needle Bearings, Needle Roller Bearing, Bearings Manufacturer manufacturer / supplier in China, offering Demek Top Quality Needle Roller Bearings Manufacturer, SKF Spherical Roller Bearing 22218 Ek, Kaydon Thin Section Ball Bearing Kg220cpo and so on.

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Supplier Homepage Product Roller Bearing Needle Roller Bearing Demek Top Quality Needle Roller Bearings Manufacturer

Demek Top Quality Needle Roller Bearings Manufacturer

FOB Price: US $1 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1/ Piece
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Port: Shanghai, China
Production Capacity: 200000 PCS/Month
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: HK, K, NK, NA, HJ series
  • Material: Bearing Steel
  • OEM Service: Provide
  • Certificate: ISO9001
  • The Number of Rows: Single
  • Spherical: Non-Aligning Bearings
  • Trademark: DEMEK
  • Specification: P0, P6, P5
  • HS Code: 84824000
  • Load Direction: Radial Bearing
  • Delivery Time: in Stock
  • Application: All Types of Machinery
  • Rolling Body: Roller Bearings
  • Outer Dimension: Small and Medium-Sized (60-115mm)
  • Separated: Separated
  • Transport Package: Industrial Package
  • Origin: China
Product Description
DEMEK Top Quality Needle Roller Bearings Manufacture

1. Instruction of Needle Roller Bearings:

Needle roller bearings are roller bearings with cylindrical rollers that are small in diameter. In spite of their low cross section, needle roller bearings have a high load carrying capacity and are therefore extremely suitable for bearing arrangements where radial space is limited.

2. Needle roller bearings design include:
- Drawn Cup Needle Roller Bearings
- Solid Cup Needle Roller Bearings
- Cage and Needle Roller Assemblies
- Inner rings for Needle Roller Bearings
- Cam and Roller Followers
- Needle Rollers
- Needle Roller Thrust Bearings
- Combined Needle Roller Bearings
Model HK, TA, TLA, open-end drawn cup needle roller bearings with retainer,
Model BK close-end drawn cup needle roller bearing with retainer,
Model SCE, BA, J, JH, drawn cup needle roller bearings (Inch series). 
 

3. Application:

Automotive transmissions, air-conditioner compressors, bulldozer blades, 

overhead traveling cranes, gearboxes, machine tool spindles, copying machines and many more. 

4. General Drawings of some types of Needle Roller Bearings:

Demek Top Quality Needle Roller Bearings Manufacturer
Demek Top Quality Needle Roller Bearings Manufacturer


5. More Part Numbers of Needle Roller Bearings We Produce:


 

model

inner diameter

outer diameter

width

HJ101812

15.8750

28.5750

19.0500

HJ101816

15.8750

28.5750

25.4000

HJ122012

19.0500

31.7500

19.0500

HJ122016

19.0500

31.7500

25.4000

HJ142212

22.2250

34.9250

19.0500

HJ142216

22.2250

34.9250

25.4000

HJ162412

25.4000

38.1000

19.0500

HJ162416

25.4000

38.1000

25.4000

HJ182616

28.5750

41.2750

25.4000

HJ182620

28.5750

41.2750

31.7500

HJ202816

31.7500

44.4500

25.4000

HJ202820

31.7500

44.4500

31.7500

HJ223016

34.9750

47.6250

25.4000

HJ223020

34.9250

47.6250

31.7500

HJ243316

38.1000

52.3875

25.4000

HJ243320

38.1000

52.3875

31.7500

HJ263516

41.2750

55.5625

25.4000

HJ263520

41.2750

55.5625

31.7500

HJ283716

44.4500

58.7375

25.4000

HJ283720

44.4500

58.7375

31.7500

HJ303920

47.6250

61.9125

31.7500

HJ324116

50.8000

65.0875

25.4000

HJ324120

50.8000

65.0875

31.7500

HJ364824

57.1500

76.2000

38.1000

HJ364828

57.1500

76.2000

44.4500

HJ405224

63.5000

82.5500

38.1000

HJ405228

63.5000

82.5500

44.4500

HJ445616

69.8500

88.9000

25.4000

HJ445624

69.8500

88.9000

38.1000

HJ445628

69.8500

88.9000

44.4500

HJ486024

76.2000

95.2500

38.1000

HJ486028

76.2000

95.2500

44.4500

HJ526828

82.5500

 

44.4500

HJ567232

88.9000

 

50.8000

HJ607632

95.2500

 

50.8000

 

Shaft diameterBearing Modleweight DimensionRated load  
Mass       
ShaftBearing DesignationApproximate valueBoundaryDimensionsBasicLoadRatingLimiting Speed
Diameter  ApproxdFwDB   Oil
DynamicStatic
mmCurrentCodeOriginalCodegmmNrpm
5NA495 75 13102670235034000
NA495TN 75 13102670235034000
6NA496 96 15103150300032000
7NA497 127 17103600365030000
8NKI8/16  8142516124001130021500
NA498 168 19114300395028000
9NKI9/12 16.691219126200700021700
NA499 179 20114850490026000
NKI9/16 21.99 1916   
10NKI10/16 27.31014221698001050019650
NA4900452490021101422138000900023700
NA6900653490038.41014222290001100023700
12NA4901452490125.11216241390001080020000
NKI12/20 3912162420140001840021000
NA6901653490144.51216242260002160020000
NKIS12 5812183016160001700020000
NA12X32X15V  12 3215   
15NKI15/16 381519271688001280019100
NKI15/20 45.715192720123001900019100
NA4902492490232152028136400900018000
NA6902653490261.615202823131002090018000
NKIS15 9015223520235002400017000
NA5902 5215202818   
NAI53212  15 3212   
7480274802 15 3625.4   
16NKIS16  16 2816130001740022000
NA16X36X24  16 3624   
17NKI17/16 41.117212916130001820020000
NA4903454490332.81722301370001000017000
NA6903653490368.217223023144002490017000
NA5903 5617223018152002170018000
NA17  17 3720   
20NKI20/16 48.520243216108001700016700
NA4904452490470.220253717210002500017000
NKIS20 11920284220280003550015000
NA69046254904 20253730360005100017000
NA5904  20253723   
22NKI22/16 5022263416153002360017000
NA49/22 7622283917220002950015000
NA69/22 13022283930375005500015000
NA223934  22283934   
23NA2020  23 4222   
25NKI25/30 11525293830315005600014000
NA490545249057625304217236003150014000
NA6905653490513825304230290005900014000
NKIS25 16025324722320005500013000
 F-208277 25324722   
NKl25/20  25293820219003400015000
NA5905 13925304223305004300013000
28NA49/2845449/289828324517240003350014000
NA69/28 17028324530405006300014000
NKI28/20  28324220230003750014000
30NA4906454490611530354717250003550013000
NA5906653490615230354723   
NA6906  30354730435007100013000
NKI30/20  30354520240004250013000
NKI30/30  30354530365006900013000
32NK132/20  32374720249004390012000
 TAFI324720 32374720249004350012000
NA49/3245449/3215032405220249004350012000
NA69/3266349/322723240523610000010000011000
35NKI35/30 16535405030390007900011000
NA4907452490715135425520198004150011000
NA6907653490730135425536260006050011000
NKIS35 2203543582233000560009500
NA5907 25635425527   
40NKI40/20 12440455520220004800010000
NKI40/30 18440455530350008600010000
NA490845449082404048622242000650008500
NA6908 40140486240640001120008500
NA5908 3484048623053000925008500
42NKI42/20 1384047572026000525009500
45NKI45/25 2184250622536000700008500
NKI45/35 28942506235415001020008500
NA490945449092604550682237000965008000
NA6909653490947945506840615001235008000
NKIS45 3064555722243000710007500
NA5909 39645506830   
50NKI50/25TAFI5068252625055682532000780007500
NA491045449102645058722241000720007500
NA5910  50587230   
NA6910653491045750587240680001350007500
NKIS50 5105060802860000950007500
NKI50/35TAFI506835 50556835530001180007500
55NKI55/35 35755607235480001268007500
NA491145449113865563802550600965807500
NA5911  55638034   
NA6911653491179055638045825601720007500
60NKI60/25 3886068822535500850007000
NA4912454491241260688525528001105006500
NA5912 61460688534   
NA6912653461279860688545885001860006500
NKIS60 55060709028650001100006500
65NA4913454491343565729025575001105006500
NA6913653491382165729045876001945006500
NKI65/25  65739025530001000006500
NKI65/35  65739035750001560006500
70NA49144544914712708010030790001540005500
NA6914653491413267080100541210002630005500
NKI70/35  70809535780001840005500
75NA49154544915765758510530820001580005500
NA5915 1130758510540   
NA6915653491514297585105541280002720005500
80NA49164544916870809011030810001705005500
NA6916653491615108090110541305002806005000
NKI80/35  8090110351030002080005000
85NKI85/26  859511526730001370004800
NKI85/36 10408595115361070002230004800
NA49174544917125085100120351110002370004600
NA69176534917220085100120631660004000004600


NA, RNA type
CLUNT standard needle roller bearings NA type, outer side with ribs or elastic locking collar, no inner wall. And a single and double row roller two structural types. And whether single or double row needle roller bearings, inner ring can be made of the NA-type or without inner structure type RNA type.
An annular lubrication grooves and lubrication holes large series of needle roller bearing outer ring. NA-type needle bearing outer ring assembly (outer ring, needle roller and cage) can not be separated, but if the inner ring can be separated from the outer components.
Needle roller bearings without inner ring in direct contact with the journal surface, can further reduce bearing radial mounting position size requirements. But requires the journal surface hardness and dimensional accuracy should meet the technical requirements of the respective bearing raceways.
 
NAV, RNAV type
NAV type and RNAV type is not with cage full complement needle roller bearings. Type in the NA and RNA derived based on the bearing structure. Its carrying capacity greater than the NA type and RNA type bearings, but the speed is lower than the performance of NA type and RNA type bearings. At high speed is not suitable for working conditions to use.
 
NAO type
NAO inner and outer rings no wall, there are single or double row needle. When the double row needle, outer ring with lubrication grooves and lubrication holes.
 
K type
   K type known as "needle roller and cage assembly," no bearing inner and outer rings of the structure. It is the smallest radial bearing a class of bearings. Which the shaft surface and bearing surface to work as a raceway, therefore, requested with matching hardness and dimensional accuracy of the shaft surface and the bearing surface shall be substantially meet the corresponding technical requirements bearing raceways.
 
Long cylindrical roller bearings
Long cylindrical roller bearings, bearing similar characteristics with the use of needle roller bearings, but radial cross-section than the large size bearings needle roller bearings, and therefore can withstand greater radial load.
Long cylindrical roller bearings and needle roller bearings needle, its ratio of length to diameter (aspect ratio) greater than 3, the difference lies in long cylindrical roller bearing roller diameter greater than 5 mm. Therefore, in a structural form, long cylindrical roller bearings and needle roller bearings have many of the same structure.
Long cylindrical roller bearings with needle bearings, can only bear the pure radial load, can not limit the axial displacement of the bearing, bearing installation, it does not allow the axis of the inner and outer ring axis angular error generated.
 
NAOL type
NAOL type and needle roller bearing NAO same structure. Inner and outer rings are no ribs,
 
NAL type
NAL same type and NA-type needle bearing structures. Outer side with ribs or elastic locking collar, no inner wall.


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Demek Top Quality Needle Roller Bearings Manufacturer






 

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