Sk Original Na4904 Needle Roller Bearing with Inner Ring
Kunshan Shenkai Precision Mould Co., Ltd.- 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
Brand
TFN / OEM
Model Number
Dimension
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) 
Certificate
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.