|Name:||Cylindrical Roller Bearing|
|Service:||OEM service provided|
♦1.What is the definition of cylindrical roller bearing?
The rolling elements are radial rolling bearings with cylindrical rollers. The internal structure of cylindrical roller bearing adopts rollers arranged in parallel, and spacers or spacers are installed between the rollers, which can prevent the inclination of the rollers or the friction between the rollers, and effectively prevent the increase of the rotational torque.
♦2.What are the classifications of cylindrical roller bearings?
Cylindrical roller bearings can be divided into single row, double row and multi-row cylindrical roller bearings and other different structures according to the number of rows of rolling elements installed.
♦3.What types of cylindrical roller bearings are there?
N, NU, NJ, NF, NUP, NFP, NH (NJ+HJ) type
♦4.What are the types of cylindrical roller bearings?
NN, NNU, NNF type
♦5.What are the types of four-row cylindrical roller bearings?
FC type, FCD type
♦6.What are the characteristics of cylindrical roller bearings with different numbers of rows?
a: Single-row cylindrical roller bearings: Single-row cylindrical roller bearings are separable bearings, which are easy to install and disassemble. Both rings can be tightly fitted, and the contact line between the rollers and the raceway is corrected to reduce stress concentration.
b: Double-row cylindrical roller bearings: Double-row cylindrical roller bearings are floating bearings, and their separability makes installation and disassembly very convenient. Both ferrules can have a tight fit. Double row cylindrical roller bearings are hardly allowed to have a tilt angle.
♦7.What is the structure of cylindrical roller bearings?
1. N0000 type without ribs on the outer ring and NU0000 type without ribs on the inner ring. Cylindrical roller bearings can accept large radial loads, have high limit speeds, do not bind the axial displacement of the shaft or housing, and cannot accept axial load.
2. Cylindrical roller bearings NJ0000 and NF0000 with ribs on both the inner and outer rings can restrain the axial displacement of the shaft or housing in one direction, and can accept a small one-way axial load. NU0000+HJ0000, NJ0000+HJ0000, NUP0000 bearings can restrain the axial displacement of the shaft or the housing in both directions within the axial clearance area of the imported bearing, and can accept small bidirectional axial loads.
♦8.What are the characteristics of cylindrical roller bearings?
a: Large radial bearing capacity, suitable for bearing heavy loads and impact loads.
b: The friction coefficient is small, suitable for high speed, and the limit speed is close to that of deep groove ball bearings.
c: N type and NU type can move axially, can adapt to the change of the relative position of the shaft and the shell caused by thermal expansion or installation error, and can be used as free end support.
d: The processing requirements for the shaft or seat hole are high, and the relative deflection of the outer ring axis after the bearing is installed should be strictly controlled to avoid contact stress concentration.
e: The inner ring or outer ring can be separated for easy installation and removal.
♦9.What are the characteristics of cylindrical roller bearings?
a: Large radial load capacity. It is suitable for bearing heavy loads and shock loads, as well as for high-speed rotation.
b. Cylindrical roller bearing raceways and rolling elements are geometrically shaped and have high bearing capacity. The new structural design of ribs and roller end faces not only improves the axial bearing capacity of the bearing, but also improves the bearing capacity of the roller end face and the roller end face. The lubricating condition of the rib contact area improves the service performance of the bearing.
♦10.How to clean cylindrical roller bearings?
a. The cleaning of the bearing is divided into coarse cleaning and fine cleaning, and a metal mesh frame can be placed at the bottom of the container used.
b. During rough cleaning, use a brush in the oil to remove grease or adhesions. If the bearing is rotated in oil at this time, be careful that the rolling surface may be damaged by foreign matter or the like.
c. During fine cleaning, slowly rotate the bearing in the oil, which must be done carefully.
The commonly used cleaning agent is neutral non-water diesel oil or kerosene, and sometimes warm lye is also used as needed. Whatever cleaning agent is used, it should be filtered frequently to keep it clean.
d. After cleaning, apply anti-rust oil or anti-rust grease on the bearing immediately.
♦11.How to adjust the radial clearance of cylindrical roller bearings?
a: For the side clearance of cylindrical and elliptical bearing bushes, it can be adjusted by manual grinding and scraping or the method of trimming and scraping after adding padding in the bearing.
b: For the top clearance of cylindrical and elliptical bearing bushes, it can be adjusted by manual grinding and scraping or by adding pads to the mid-plane of the bearing when circumstances permit.
c: For the fixed bearing bush with multiple oil wedges, in principle, it is not allowed to repair and adjust the bearing bush clearance. If the clearance is not suitable, the new pad should be replaced.
d: For multi-oil wedge tiltable bearing pads, scraping pads are not allowed to be repaired, and the pads should be replaced when the clearance is not suitable.
e: For tiles with adjustable thickness, the amount of tiles can be adjusted by adding a stainless steel pad under the adjustment block behind the tile, or by reducing the thickness of the adjustment block. Note that for multi-oil wedge tiltable bearing pads, the thickness error between the pads in the same group should be less than 0.01mm.
1. We provide you with suitable products.
Wanyu Bearing can provide you with various standard bearings, and can also produce special bearings according to your drawings or samples. We guarantee excellent quality. We ensure that all our products meet the standards you require. Both our own factory and our partners have obtained ISO 9000 quality management system certificate and they are very strict about production.
2. We are efficient.
We have sufficient stock of standard bearings. Our efficiency is not only reflected in production, but also in logistics. We are very familiar with export procedures and have established a global logistics network. We do our best to save your time. Let the goods reach you as soon as possible.
3. Our prices are reasonable.
Our prices are always competitive in the market.
4. Satisfactory service.
Our dedicated staff handles every case. If you have any questions, needs or requests, you can contact us by email or other communication software, and our service staff will answer your questions immediately.
♦ Large and medium electric motors
♦ rolling stock
♦ Machine tool spindle
♦ internal combustion engine
♦ gas turbine
♦ rolling mill
♦ Lifting and transporting machinery
Delivery ways:1).Express by DHL,TNT,EMS,UPS，2).Shipped by sea or air
Delivery time：About 5-20 days after the order confirmed.
Payment：1)T/T 30% of the amount as prepayment. 2)Western Union.
Packing：A. Plastic box + outer box + pallet
B. Plastic bag + box + carton + pallet
C. Tube bag + middle box + carton + pallet
D. Of course we will also deliver according to your requirements
1. We strongly recommend that you can communicate with us via email, thank you!
2. We have all kinds of bearings, just tell me your item number and quantity, we will provide you with the most preferential price as soon as possible
The price of the bearing material, precision grade, seal type, OEM service, etc., we can make requirements according to your requirements.