Nav4924 Nav4926 Nav4928 Nav4930 Rnav4003 Rnav4004 Printing Textile Machinery Rolling Bearing Needle Roller Bearing for Mini Excavator

• Customization: Available
• Cage: with Cage/Without Cage
• Rows Number: Single/Double/Multiple
• Model NO.: NAV4924 NAV4926 NAV4928 NAV4930 RNAV4003 RNAV4004
• Style: With Inner Ring
• Material: Bearing Steel
• Type: Open
• Hardness: 60-64HRC
• Precision Grade: P0, P6, P5, P4
• Radial Clearance: C2/C0/C3/C4/C5
• Transport Package: Carton/Wooden Box/Plastic Tube
• Specification: d: 120-150mm/24.3-28.7mm
• Trademark: LRHBJ or Customized
• Origin: Shandong
• HS Code: 8482400000
• Production Capacity: 8000000 Pieces/Year
• Package Size: 15.00cm * 15.00cm * 15.00cm
• Package Gross Weight: 5.000kg
• Lead Time: 1 days (1 - 10 Sets) ; 3 days (11 - 100 Sets) ; To be negotiated ( > 100 Sets)

Product Description

Product Description

Band Name	LRHBJ or Customized
Bearing Name	Needle Roller Bearing
Material	Bearing Steel
Precision Grade	P0/P6/P5/P4
Radial Clearance	C2/C0/C3/C4/C5
Hardness	60-64HRC
Number of Row	Single//Multiple
Certifications	ISO9001/IATF16949
Package	Carton/Wooden Box/Plastic Tube/According to Customers' Needs
Sample	Available
MOQ	1PCS
OEM	Acceptable
Warranty Period	One Year
Stock Status	Rich Stock and Quick Delivery
Special Customization	Acceptable
Port	Qingdao/Shanghai/Ningbo/Guangzhou/Yiwu...
Terms of Payment	TT, L/C, D/P, Western Union, Paypal, Money Gram and others

 

Needle Roller Bearings with Inner Ring, Full Complement
Bearing Designation		Boundary Dimensions(mm)			Basic Load Rating(N)		Limiting Speed (Rpm)
Current Designation	Original Designation	d	D	B	Cr Dynamic	Cor Static	Grease
NAV4924	4074924	120	165	45
NAV4926	4074926	130	180	50
NAV4928	4074928	140	190	50
NAV4930	4074930	150	210	60
RNAV4003	4084103	24.3	35	18	17900	37900	4300
RNAV4004	4084104	28.7	42	22	28150	60900	3900

Needle Roller Bearing Introduction

The advantages of needle roller bearings mainly include:
    1. It has small radial size and compact structure so that it can greatly reduce the volume of the main engine and suitable for the need to reduce the radial size of the occasion.
    2. It can withstand high load and has strong bearing capacity so that it is suitable for heavy loads and high speed occasions.
    3. It can operate smoothly and has low friction resistance so that it is suitable for high-speed operation occasions.
    4. It has wide application and can be used for various types of mechanical devices.
    5. It has small friction resistance, small power consumption, and high mechanical efficiency so that its is easy to work.
    6. It has standardized size, interchangeability so that it is easy to be installed and maintained.
    7. It has compact structure, light weight and smaller axial size.
    8. It has high precision, high speed, small wear and long service life.
    9. Some bearings have automatic aligning performance, stable and reliable quality, high production efficiency so that it is suitable for mass production.
    10. Its transmission friction torque is much lower than the hydrodynamic pressure bearing, so the friction temperature rise and power consumption are lower; The starting friction torque is  slightly higher than the rotating friction torque; The sensitivity of bearing deformation to load change is less than that of hydrodynamic bearing; Only a small amount of lubricant is required to operate normally; It can withstand radial and thrust combined loads at the same time; In a wide range of load-speed, its unique design makes the bearings achieve excellent performance; Bearing performance is relatively insensitive to fluctuations in load, speed and speed.

Production Process

Package and Delivery

Matters Need Attention
    Rolling bearings are precision components, their use must also be appropriate caution. No matter how high-performance bearings, if used improperly, it will not get the expected performance, relevant bearing cautions below.
    1. To keep their surroundings clean bearings
    Even tiny invisible dust into the bearing, will increase wear, vibration and noise of the bearing. Bearing and its surrounding attachments should be kept clean, especially dust and dirt, tools and working environment must be kept clean.
    2. When using the installation should carefully
    Does not allow a strong punch, does not allow direct bearing percussion hammer is not allowed to pass through the rolling pressure.
    3. Using a suitable, accurate installation tool
    Try using a dedicated tool, try to avoid the use of cloth and short fibers such things.
    4. Prevent bearing corrosion
    Direct hand pick bearings, to fully wash hands sweat and coated with high-quality mineral oil before operation,especially in the rainy season and summer mainly rust. However, under the operating conditions of a particular case, the longer the life the bearing can be obtained in traditional computing, especially under light load conditions. These particular operating condition is, when the rolling surface (and the rolling member rolling path) is effectively split, and limitations as the lubricant film surface contaminants may lead to damage. ln fact, under ideal conditions, the so-called permanent bearing life is possible.

Bearing Testing Photos

                        Roughness Profilometer                          Roundness Measuring Instrument

Application Scene

Company Profile

    Shandong RHB Bearing Manufacturing Co., Ltd. established in 2008 has become a professional bearing manufacturer with advanced bearing production technology and the most advanced CNC equipment in China. Our company produces more than 8 million sets of bearings annually, with an output value of more than 90 million RMB. And we adopted first-class production equipment and perfect testing system, we use advanced technical means.
    We produce deep groove ball bearings, spherical roller bearings, angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, spherical ball bearings, thrust ball bearings, thrust roller bearings, linear bearings, stainless steel bearings, pillow block bearings, needle roller bearings, non-standard bearings, etc. Bearing precision grades are P0, P6, P5, P4. Our products are widely used in metallurgy, mining, petroleum and chemical industry, coal, cement, paper, wind power, heavy machinery, construction machinery, port machinery and other complete sets of products.
    We provide the following services:
    1.OEM service, customized bearing size, logo and packaging;
    2.CE certificate, EPR certificate and SGS report;
    3.One year warranty;
    4.Competitive wholesale price;
    5.Short delivery time, fast delivery;
    6.Free samples for old customers. Free samples of parts bearings for new customers.
    Now we are sincerely looking for global general agent. If you choose RHB, you will get good quality bearings, professional service, integrity, and finally we could achieve win-win cooperation!

FAQ
1.What is the minimum order quantity for this product?
It can be negotiated, we will try our best to meet customers' needs. 
2.What is your latest delivery time?
Most orders will be shipped within 1-7 days after receiving the payment.
3.Does your company have quality assurance?
Yes, for one year.
4.What is the competitiveness of your company's products compared to other companies?
Digital Production, high precision, high speed and low noise.
5.What are the advantages of your company's services compared to other companies?
Reply and answer timely. Provide documents required by customers for customs clearance or sales. 100% after-sales service.
6.Which payment way does your company support?
At customers' convenience.
7.How to contact us quickly?
Please send us an inquiry or message in this platform, or you can tell us your phone number, WhatsApp and Wechat. We will contact you as soon as possible and provide more details you need.


    We also produce other bearings, especially spherical roller bearings. Welcome to purchase!