Machine Tools High Load/Speed/Precision Nn30/670K/P D31821/670 670*980*230mm Cylindrical Roller Bearing

• Customization: Available
• Rolling Body: Roller Bearings
• The Number of Rows: Single
• Model NO.: NN30/670K/P D31821/670
• Material: Gcr15/Gcr15 Simn/Stainless Steel
• Spherical: Non-Aligning Bearings
• Load Direction: Radial Bearing
• Separated: Separated
• MOQ: 1PCS
• Hardness: 60-64HRC
• Precision Grade: P0, P6, P5, P4
• Radial Clearance: C2/C0/C3/C4/C5
• Vibration Acceleration: Z/Z1/Z2/Z3/Z4
• Vibration Tolerance: V/V1/V2/V3/V4
• Transport Package: Carton/Wooden Box/Customized
• Specification: 670*980*230mm
• Trademark: LRHBJ or Customized
• Origin: Shandong
• HS Code: 8482102000
• Production Capacity: 800000 Pieces/Year
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

  Product Description

Brand Name	LRHBJ or Customized
Bearing Type	Cylindrical Roller Bearing
Material	Gcr15/Gcr15 Simn/Stainless Steel
Hardness	60-64HRC
Precision Grade	P0,P6,P5,P4
Number of Row	Single or More
Radial Clearance	C2/C0/C3/C4/C5
Vibration Acceleration	Z/Z1/Z2/Z3/Z4
Vibration Tolerance	V/V1/V2/V3/V4
Certifications	ISO 9001/IATF16949
Package	Carton/Wooden Box/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

Cylindrical Roller Bearings Introduction
    Cylindrical roller bearings, generally separable bearings, are usually guided by two retaining edges of a bearing ring and consists of cage, roller and guiding ring. This bearing is convenient to be installed and dismantled, especially when the inner and outer ring as well as roller and shell have coordination. This bearing is generally used to withstand radial loads, and only when the inner and outer ring are with the edge of the single row bearings, it can withstand smaller axial loads or larger intermittent axial loads. Compared with the deep groove ball bearings with the same external dimensions, it has larger radial load capacity; from the structural point of view, it also fits high speed rotation.
    Cylindrical roller bearings are mainly used in machine tools, petroleum, vibrating screen, rolling mill handling machinery and various industrial machinery.
    Cylindrical roller bearings are designed with cambered rollers and raceways so as to eliminate edge stress and improve bearing life.
    Cylindrical roller bearings have a certain angle of inclination for the retaining edge, so its axial load is larger than the conventional design.

NJ: Its outer ring is double retaining edge and inner ring is single retaining edge.
NF: Its outer ring is single retaining edge and inner ring is double retaining edge.
NJ and NF can limit the shaft or shell of a direction of the axial displacement, realize one-way axial positioning, and can withstand a small one-way axial load.
NUP: Its outer ring is double retaining edge. Inner ring has a retaining edge on one side; the other side has a retaining ring. This bearing can make two-way axial positioning of the shaft and can withstand two-way axial force. The structure of the bearings can be NUP-N. NJ with tilted retaining ring HJ can be used as a locating bearing just like NUP.

Application Scene

Bearing Testing Photos

                      Roughness Profilometer                                    Roundness Measuring Instrument

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.

Production Process
Package and Delivery


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 CNY. 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!