The main uses and parameters of cylindrical roller bearings

Cylindrical roller bearings Luoyang Longma Bearing **** There are many types of cylindrical roller bearings, which are distinguished by structure, including N, NF, NJ, NU, NUP, NCL, RN and RNU types. In terms of load capacity, there are ordinary and reinforced cylindrical roller bearings. The dimensions of the reinforced cylindrical roller bearing are the same as those of the ordinary type, but the diameter, length and number of rollers have increased, so the load bearing capacity has increased.

Distinguished by the number of rows of cylindrical rollers, there are single row and multi-row cylindrical roller bearings. Cylindrical roller bearings are divided into four rows of cylindrical rollers and double rows of cylindrical rollers, with high radial load capacity, but can not withstand axial forces, small radial size, high limit speed, because the inner ring has no flange, so the inner ring and outer ring assembly can be installed separately (with a full set of rollers and cage). This kind of bearing has the advantages of large radial load capacity, high rotation accuracy, and convenient installation and disassembly for all kinds of cold and hot rolling mills with frequent roll replacement.

It is suitable for work rolls or back-up rolls on various hot and cold rolling mills, billet openers and other rolling mills.

Cylindrical roller bearings are mainly used in compressors, pumps, wind energy equipment, gearboxes, unbalanced shakers and other equipment.

The main parameters of cylindrical roller bearings: heavy-duty and high-speed capabilities; Able to withstand axial displacement; It is a separable design.

SKF Cylindrical Roller Bearing Data Sheet |Model |Inner Diameter (mm) |Outer Diameter (mm) |Width (mm) |Net Weight (kg) |nu 202 ecp | 15 | 35 | 11 | nu 203 ecp | 17 | 40 | 12 | nu 204 ecp | 20 | 47 | 14 | nu 205 ecp | 25 | 52 | 15 | nu 206 ecp | 30 | 62 | 16 | nu 207 ecp | 35 | 7

Hello, the following are some general cylindrical rock roller bearing parameter tables (data for reference only):1SKF Cylindrical Roller Bearing Data Sheet |Model |Inner Diameter (mm) |Outer jujube cavity diameter (mm) |Width (mm) |Net Concealment Weight (kg) |nu 202 ecp | 15 | 35 | 11 | nu 203 ecp | 17 | 40 | 12 | nu 204 ecp | 20 | 47 | 14 | nu 205 ecp | 25 | 52 | 15 | nu 206 ecp | 30 | 62 | 16 | nu 207 ecp | 35 | 7

nu 207 ecp | 35 | 72 | 17 | nu 208 ecp | 40 | 80 | 18 | 2.FAG cylindrical rolled tung bearing parameter table|Model |Inner diameter eggplant chop (mm) |Outer Diameter (mm) |Width (mm) |Net weight tremor Zhengchang (kg) |15 | 35 | 11 | 17 | 40 | 12 | 20 | 47 | 14 | 25 | 52 | 15 |

3.nsk cylindrical stove talk roller argument rough bearing bumper parameter table|Model |Inner Diameter (mm) |Outer Diameter (mm) |Width (mm) |Net Weight (kg) |nu202ew | 15 | 35 | 11 | nu203ew | 17 | 40 | 12 | nu204ew | 20 | 47 | 14 | nu205ew | 25 | 52 | 15 | nu206ew | 30 | 62 | 16 | nu207ew | 35 | 72 | 17 |

nu207ew | 35 | 72 | 17 | nu208ew | 40 | 80 | 18 |Please note that the parameters of the same type of cylindrical roller spike bearing may be different, and the actual use shall prevail.

Summary. Hello! The parameter table of cylindrical roller bearings includes the outer diameter, inner diameter, diameter of the rollers, the number of rollers and the thrust capacity of the bearing. The following is the parameter table.

Hello! The parameter table of cylindrical roller bearings includes the outer diameter, the inner diameter of the child, the diameter of the rollers, the number of rollers and the thrust capacity of the bearing Qingyan. The following is the parameter table.

Summary. Hello Kiss is happy to answer this question for you. Tapered roller bearings are separable bearings, and the inner and outer rings of the bearings have tapered raceways.

This type of bearing is divided into different structural types such as single-row, double-row and four-row tapered roller bearings according to the number of rollers installed. Single-row tapered roller bearings can accommodate radial loads and axial loads in one direction. When a bearing is subjected to a radial load, an axial component is generated, so another bearing that can withstand the opposite axial force is required to balance it.

Hello Kiss is happy to answer this question for you. Tapered roller bearings are separable bearings, and the inner and outer rings of the bearings have tapered raceways. This type of bearing is divided into different structural types such as single-row, double-row and four-row tapered roller bearings according to the number of rollers installed.

Single-row tapered roller bearings can accommodate radial loads and axial loads in one direction. When a bearing is subjected to a radial load, an axial component is generated, so another bearing that can withstand the opposite axial force is required to balance it.

XRT series crossed roller bearings are designed to provide high rotational accuracy and stiffness in a small space, resulting in significant material cost savings. This kind of bearing is to install two sets of bearing raceways and rollers at right angles cross-cross, adjacent rollers are facing opposite directions, and isolation blocks are installed between rollers and rollers, and supporting gaskets are also installed on the rollers, so that the two halves of the rollers can accommodate in the same space. The angle and tapered geometry of the bearing make the effective span of the bearing several times larger than the actual width of the bearing itself.

XRT series bearings are suitable for high-speed machine tool applications such as vertical boring machines and vertical grinding machines. It is also particularly suitable for many equipment with limited space and high requirements for rotation accuracy. Inner diameter mm to mm ( into in)

Outer diameter mm to mm ( into inThe XRT series has two rows of tapered rollers arranged vertically on the V-shaped disc surface at 90° through a spacer retainer, and can withstand loads in all directions, such as radial loads and axial loads.

Linear contact on the raceway and roller construction provides maximum rotational accuracy, high stability, and greater tilt rigidity.

The adjustable preload design extends bearing life, maximizes stiffness and provides minimal run-out.

The nylon spacer has a low inertia and a low running torque.

The parts are made of carburized steel or electroslag remelted bearing steel, which has good impact resistance. Precision rotary indexing table for machine tools.

Vertical and horizontal boring machines.

Vertical grinding machines Rotary surface grinding machines Large gear hobbing machines Gun and radar rotary tables Large radio and optical telescopes Rotating cameras Steering pivots and casters Height-constrained pivot microscope tables Rod center pivot pivot Rotating bogies Welding brackets Rotary assembly fixtures Industrial robots Precision rotary tables Medical devices Measuring instruments IC manufacturing equipment.

Crossed roller bearings are easy to install because the split inner or outer rings are fixed with the crossed roller collar after the roller and spacer keepers are installed to prevent separation from each other. Since the rollers are crossed, only one set of crossed roller collars can withstand loads in all directions, and the rigidity is 3 to 4 times higher than that of conventional models. At the same time, because the inner and outer rings of crossed roller bearings are divided into two parts, the bearing clearance can be adjusted, and high-precision rotational motion can be obtained even when a preload is applied.

1. It has excellent rotation accuracy.

The internal structure of the crossed roller bearing adopts the rollers to be arranged vertically at 90° with each other, and the rollers are equipped with spacer holders or isolation blocks to prevent the rollers from grinding against each other due to the tilt of the rollers. In addition, there is no contact or locking of one side of the roller; At the same time, because the inner and outer rings are a split structure, the gap can be adjusted, and high-precision rotary motion can be obtained even when preload is applied.

2. Simplified operation and installation.

The outer and inner rings, which are divided into two parts, are attached to the rollers and retainers and are fixed together, so installation is very simple.

3. Bear large axial and radial loads.

This is because the rollers are arranged perpendicular to each other by means of spacer holders on a V-grooved rolling surface at 90°.

4. Greatly save installation space.

The size of the inner and outer rings of crossed roller bearings has been minimized, and in particular, the ultra-thin structure is a compact size that is close to the limit and has high rigidity, so it is ideal for a wide range of applications, such as joints and rotating parts of industrial robots, rotary tables of machining centers, rotating parts of manipulators, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing equipment.

5.High rotational speed capability.

It is widely used in machinery and equipment, hydropower and water conservancy, Gongming Jingcheng, railway, automobile, steel, electric power, Shenshu textile, packaging, medical, metallurgy, mining, petroleum, electric power, papermaking, electronic computers, motors, sports equipment, office equipment, instrumentation, automotive motors, fine.

Dense instruments and other wide Huai head fields.

Hebei Qipeng Business asks you for the answer.

The cylindrical roller bearing size is the inner and outer diameter dimensions, and the width is 14.

The type number of cylindrical roller bearings is N0000. There are two types of structures: cylindrical bore and conical bore (bearing code plus K). Row cylindrical roller bearing bearings have the advantages of compact structure, large rigidity, large bearing capacity, and small deformation after loading.

The conical bore can also be used to adjust the clearance slightly.

And the structure of the positioning device can be simplified, which is convenient for installation and disassembly. Product type: NN type (double row cylindrical roller bearing inner ring double flange and outer ring without flange). NNU type (double row cylindrical roller bearings, double flanges on the outer ring and no flanges on the inner ring).

1.The roller and raceway are in line contact or trimmed down line contact, and the radial bearing capacity is large, which is suitable for bearing heavy loads and shock loads.

2.The coefficient of friction is small, suitable for high speed, and the ultimate speed is close to that of deep groove ball bearings.

3.N-type and N-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 a free end support.

4.The processing requirements for the shaft or housing bore are high, and the relative deviation of the axis of the outer ring after the bearing is installed should be strictly controlled to avoid the concentration of contact stress.

5.The inner or outer ring can be separated for easy installation and removal.