Sk Original Na4904 Needle Roller Bearing with Inner Ring

• Rolling Body：Roller Bearings
• The Number of Rows：Single
• Outer Dimension：Small and Medium-Sized (60-115mm)
• Material：Bearing Steel
• Spherical：Non-Aligning Bearings
• Load Direction：Radial Bearing

=== Base Info ===

• Model NO.：NA4904
• Separated：Unseparated
• Product Name：Sk Na4904 Needle Roller Bearing
• Width：17mm
• Bore Diameter：20mm
• Outside Diameter：37mm
• Limiting Speeds：17000rpm
• Reference Speed：15000rpm
• Fatigue Load Limit：3.35kn
• Basic Static Load Rating：28kn
• Basic Dynamic Load Rating：21.6kn
• Mass Bearing：0.075kg
• Transport Package：as Customer′s Requirements
• Specification：20x37x17mm
• Trademark：TFN
• Origin：Shangdong China
• HS Code：8482400000
• Production Capacity：5000000,Year

=== Description ===

Product Name 

 SK Original Na4904 Needle Roller Bearing with Inner Ring

Brand

TFN / OEM

Model Number

NA4904

Dimension

20x37x17mm

Ring Material

Gcr15/ Carbon Steel/ Stainless Steel

Cage Material 

Steel

Precision

P0, P6, P5, P4,P2 or as requested

Vibration

ZV1, ZV2, ZV3, or as requested

Clearance 

C0,C2,C3, or as requested 

Application

Widely used in various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery etc.

Features 

Long life, high temperature resistance, corrosion resistance, ultra high speed.

Quality standard

ISO9001:2000/ SGS

Quality Control Process 

1.Assembly

2.Windage test

3.Cleaning

4.Rotary test

5.Greasing and gland

6.Noise inspection

7.Appearance inspection

8.Rust prevention

9.Product packaging

Needle bearing

Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. This type of roller is called a needle roller. Despite the small cross-section, the bearing still has a high load bearing capacity, and the needle bearing is equipped with a thin and long roller (roller diameter D≤5mm, L/D≥2.5, L is the roller length), so The radial structure is compact, its inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, and it is especially suitable for support structures with limited radial mounting dimensions.

Other Needle roller bearing models : 

Boundary dimensions(mm)Moment(Nm)Basic load ratings(N)Mass(g) FwDCMdCrCor(Approx.)HF35303542301213900390058HF2520253220665500550030.9HF3020303720904500450036HF35203542201213900390040HF161616221620.58500750014HF181618241624.17500750015.5HF201620261628.57000650017HF10121014125.314000110004HF121612181612.210000700010.5HF141614201617.39500800013HF04094860.3434000140001HF0612610121.7623000130003Bearing NumberBoundary dimensions(mm)Basic load ratings(N)Limiting speeds(rpm)Mass(g) FwEwBcCrCorOil(Approx.)K5X8X10TN581028002450370000.9K5X8X8TN58823001880370000.7K6X10X13TN6101335002800330001.3K6X9X10TN691033003100350001K6X9X8TN698256002240350000.8K7X10X10TN7101033503400320001.1K7X10X8TN710827502550320000.9K8X11X10TN8111038303950300001.7K8X11X13TN8111350005700300001.8K8X11X8TN811830002900300001.1K8X12X10TN8121049004600300001.3K9X12X10TN9121042004700300001.5K9X12X13TN9121355006700300001.9K10X13X10TN10131045005250270001.6Bearing NumberBoundary dimensions(mm)Basic load ratings(N)Limiting speeds(rpm)Mass(g) FwDCCrCorOil(Approx.)NK5/10TN5101021001400367802.9NK8/12TN8151230503650291128.3NK10/12TN101712475053502350010NK12/12121912605064002164011.8NK12/16121916820098002164016.8NK14/16142216826096001832220.8NK15/121523128600100702100418.5NK16/2016242010400168001552223.9NK16/161624169030119001552220.8NK17/161725169000135001416321.5NK18/2018262010500138001362830.5NK2026202026201050011900912517.2NK203312SX20331213000175001112429.1NK20/1620281611500134001271625.7NK20/2020282012400218001271629.3Bearing NumberBoundary dimensions(mm)Basic load ratings(N)Limiting speeds(rpm)Mass(g) FwDCCrCorOil(Approx.)RNAV400221.8732171080029800450045RNAV400324.335181790037900430062RNAV400428.7422228150609003900114RNAV400533.5472233800708003700129RNAV400640.1552549900965003500193RNAV400745.96227476001228003100259RNAV400851.66828499001379002700304RNAV400957.47530525001535002600390RNAV401062.18030557001660002500426RNAV401169.89035685002258002300645RNAV401274.69535754002390002100677RNAV401380.310035795002569001900692RNAV40148811040988003549001700950RNAV401592.71154510180037290016001000RNAV4016100.31254510290037350015001400RNAV4017104.81304510380037480014001540Bearing NumberBoundary dimensions(mm)Basic load ratings(N)Limiting speeds(rpm)Mass(g) Dc1DcDwCrCorOil(Approx.)AXK0414TN 414243807500180000.7AXK0515TN515246809100170000.8AXK0821TN8212775019000150002AXK102410242915024500140003AXK122612262986028600130003AXK1528152821120035500110004AXK1730173021180038600100004AXK203520352129004560085005AXK254225422138005780070007AXK304730472156006950060008AXK3552355221690080100550010AXK40604060327500113500470016AXK45654565329050127600420018

                                                                                   


Certificate

Packing

FAQ

Q:Why choose us?                                                        

A:1. We are professional,have factory in shandong for many years.

   2. We are experienced for 10 years.

   3. We can offer a various kind of bearing with high quality:Z1V1,Z2V2,Z3V3 and best price

 

Q:How is the quality of your products?                             

A:The same quality, we have lower price.The same price,we have better quality.

 

Q:Except Needle roller bearing,what other main bearing do you have?

A:Self-alaigning ball bearing,Cylindrical roller bearing,Taper Roller Bearing,Thrust roller bearing,Spherical roller bearing,Deep groove ball bearing,Angular contact ball bearing etc.

 

Q:Can I get NA4904 Needle roller bearing free samples?                                                 

A:We will charge a little sample fee for our regular designs or customized ones, These charges will be refunded to you when your mass production order is confirmed.

 

Q:Can you make the products as our requirement?     

A:We have more than 10years' OEM experience. We supply products fo more than 300 automobile parts factories.