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Wuxi Shenxi Bearing Manufacturing Co.,Ltd

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NA4838 Bearings
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Product: Views:198NA4838 Bearings 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2017-08-29 20:28

Wuxi Shenxi Bearing Manufacturing Co.,Ltd is one of the leading China na4838 bearings manufacturers and suppliers, with professional factory we are able to offer you high quality na4838 bearings at good price, welcome to wholesale cheap and low price na4838 bearings from us.

Quick Details
  • Type: Needle

  • Brand Name: SXM

  • Bore Size: 115 - 415 mm

  • Outside Diameter: 135 - 480 mm

  • Model Number: RNA4838

  • Precision Rating: P0, P6,P5,P4,P2

  • Seals Type: one-way or two-way sealed type

  • Number of Row: Single Row

  • Place of Origin: Jiangsu, China (Mainland)

  • Material: GCr15,GCr15SiMn, G20Cr2Ni4A

  • Dimensions: Metric dimension,inch dimension

  • clearance: C0 C2 C3 C4 C5

  • Vabration: Z1, Z2, Z3, Z4

  • trade type: Industry and trade integration

  • Bearing steel liner: GCr15/100Cr6/SUJ2

  • Seal type: Single seals or double seals

  • color of needle roller bearing: natural,Silver

Packaging & Delivery
Packaging Details: Single Box(White Box/Color Box/Wooden Box/As requiremed)
Delivery Detail: within 7-15days after received the 30% payment

1.High rigidity and long life 
2.Large load capacity 
3.Good wearability 
4.Nice appearance complete product system 
high precision low noise and vibration needle roller bearings without inner ring

1. High speed, High Precision, Low Noise, Long Service Life 
2. Mainly withstand radial load

3. Customers' drawing or samples accepted  

4. Heavy radial loads and high speeds

5. Military Specifications

6. Less vibration and noise 

7. Small order accepted and sample accepted

8. Can withstand a little axial load if outer ring and inner ring have ribs

.Structure Types 

Needle roller bearings without inner ring NK/RNA/NKS/RNA49/RNA69 type series: 

NA, NKI-type bearings without inner ring shall be RNA,  NKI-type needle roller bearings. Such bearings without inner ring, suitable for installation dimensions restricted radial supporting structure, and bearing directly as a journal to match rolling surface. As a raceway axis, we must quench the hardware and make grinding, and only be processed to the appropriate size and shape accuracy, the full set of needle roller bearingscan be a higher life expectancy and operation of precision. At the same time, because no inner ring, the diameter of shaft can also be appropriate to increase, thereby also increased rigidity.

Needle roller bearings without inner ring can be widelyused in a wide variety of applications, for example as indexing elements, back-stopping clutches or overrunning clutches. The drawn cup roller clutch fulfils the overrunning or holding function as appropriate.


- Smaller cross-section leading to greated rigidity,higher load-carrying capacity & lower inertia of the needle roller bearings help size and weight reductions in machinery.

- Though they are less wide,their load carrying capacity is high and is most suitable for applications where the load is high & the radial space is less.

- Needle roller bearings,which are designed to withstand oscillation can operate under severe conditions & interchange with sliding bearings.

. Brand: SXM or per your demand, also can be made in your own brand.

Features of Needle roller bearings without inner ring :

a.  High Precision and Rigidity 

b. Ease of Assembly  

c.  Complete range of types  

d.  Needle roller bearings without inner ringare used in automobile, rolling mill, mining, metallurgical industry,plastic machinery, etc.

e. Other advantages of Needle roller bearings without inner ring : 

.Bearing material:bearing steel Gcr15    

.Smooth movement,low friction,high rigidity and long life

.Nice appearance,complete product system

.We can make non-standard needle roller bearings without inner ring according to clients samples of drawing

Structures of high precision low noise and vibration needle roller bearings without inner ring 


Details of high precision low noise and vibration needle roller bearings without inner ring 


high precision low noise and vibration needle roller bearings without inner ring



Brand Name :

China Brand,neutral brand.imported brand

Inner Diameter :


Outer Diameter :



bearing steel; chrome steel;stainless steel





Precision Rating:

 P0, P6,P5,P4,P2


Z1, Z2, Z3


per your request, such as SRL, PS2, and etc


single box or per your rquest 


ISO9001:2008, GB/T 19001-2008

Delivery Date:

 7-15 days upon receipt of 30% deposit






Basic Tests:

2.Windage test
4.Rotary test
5.Greasing and gland
6.Noise inspection
7.Appearance inspection
8.Rust prevention

Other types of needle roller bearings without inner ring

Pictures of high precision low noise and vibration needle roller bearings without inner ring


Production Line 

Quality Control

Convenient Transportation 




Needle roller bearings without inner ring can be applied in numerous places. They can be widely used in the machinery such as the agricultural machinery, industrial sewing machine, the construction tools and the material handling equipment. Additionally, they are also commonly applied in the transportation vehicles such as the cars, buses, electric bicycle and the aircrafts.

The needle roller bearings without inner ring are also very helpful in some other places which we are not very familiar with. For example, Hydraulic pumps, sheave blocks and hoist drum shaft.


About us:

Wuxi Shenxi Bearing Co,Ltd,

More than 20 years' experience in bearing manufacturing: the complete industry chain: continuous material suppliers,strong supply capacity, perfect system of freight forwarding.

Customization production: size, modle, and package are per clients' demand.

Realizable quality: we have our own factory, professional design team, strict quality control system and strong transportation cooperation.

Professional: We can offer almost types of linear guide rail.Diameter 10-60mm,the Length can be produced according to your requirement. 

Delivery fast: Goods be sent out within 1 to 5 working days based on order quantity.

First-class pre and after service: we ensure the well processing of the practice of our products for customers.