ZYS precision bearing, ball bearings, roller bearings, bearing parts

Characteristics of Aerospace Bearing : The sliding bearing is a sliding friction, which has a large contact surface, simple structure, small size, strong bearing capacity, good vibration resistance, but a large friction coefficient, easy to heat, and requires adequate lubrication, suitable for low speed and heavy load. Rolling bearings are rolling friction. Compared with sliding bearings, they have a smaller contact surface, a smaller friction coefficient, and less heat generation; less wear and good accuracy retention; suitable for operation at higher speeds. But the carrying capacity is slightly worse and the vibration resistance is poor. 2. Bearing is an important part in contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different frictional properties of moving elements, bearings can be divided into rolling bearings and sliding be...

Slewing bearing is a kind of large bearing which can bear a comprehensive load, and can withstand  larger axial load, radial loads and overturning torque at the same time. Slewing bearings generally  have mounting holes, internal or outer gears, lubricating oil holes and sealing devices. Therefore, it  can make the design of the main engine compact, easy to guide and easy to maintain. Slewing bearing consists of four types: four point contact ball bearings, double row angle contact ball bearing, cross  tapered roller bearings and three row cylindrical roller...

sealed angular contact ball bearing can bear both radial and axial loads. Can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. The contact angle is the angle between the line connecting the contact point of the ball and the raceway in the radial plane and the vertical line of the bearing axis. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Angular contact ball bearings have raceways on the inner and outer rings, and the inner and outer rings can be relatively displaced along the bearing axis. This type of bearing is particularly suitable for bearing compound loads, that is, loads acting simultaneously in the radial and axial directions.

Railway bearing s refer to bearings used in the rolling industry, that is, rolling non-ferrous metals, ferrous metals and non-metallic products, at the roll diameter of the rolling roller system and on . the drum. Four-row cylindrical roller bearings are usually used to bear radial loads, thrust roller or thrust ball bearings and radial angular contact ball or radial roller bearings to bear axial loads. It has the advantages of large load capacity, high limit speed, high precision, separable inner and outer rings and interchangeability, easy processing, low production cost, and easy installation and disassembly.

The pitch bearing is a kind of rolling bearing. The ball ball is installed in the middle of the inner steel ring and the outer steel ring, and can bear a large load. Also called ball bearing. The purpose of pitch bearings is to determine the relative position of two parts (usually the shaft and the bearing seat) and ensure their free rotation, while transmitting the load between them. At high speeds (eg in gyro ball bearings), this use can be expanded to include free rotation with little wear in the bearings. In order to achieve this state, an adhesive fluid film called an elastic hydrodynamic lubrication film can be used to separate the two parts of the bearing. Denhard (1 966) pointed out that the elasticity can be maintained not only when the bearing bears the load on the shaft, but also when the bearing is preloaded so that the positioning accuracy and stability of the shaft do not exceed 1 microinch or 1 nanoinch Hydrodynamic lubricating film

YRT bearing is a slewing mechanism with outer ring rotation and inner ring support. A row of radial rollers ensures that the bearing can bear radial force and overturning moment. YRT bearing consists of a thrust/centrial seat ring and a thrust/radial axis The ring, a thrust washer, two needle roller cage assemblies and a set of centripetal cylindrical rollers. The seat ring and the shaft ring have evenly distributed screw holes for installation. This type of bearing has high axial and radial load capacity. Rotary mechanism suitable for axial load. YRT bearings are mainly used in CNC machine tool manufacturing. As its core components, domestic YRT bearings are still dependent on imports. The accuracy parameter standards of domestic YRT bearings are also based on international manufacturers. Since the beginning of the 21st century, especially with the launch of the national“High-end CNC machine tools and basic manufacturing equipment" project, it has greatly promoted the deve...

Some types of  construction machinery bearing 1. Needle bearing Needle bearing: The needle roller bearing is equipped with thin and long rollers, which is especially suitable for the support structure with limited radial installation size. The needle roller bearing can be used without inner ring bearing or needle roller and cage assembly according to different occasions. 2. Self-aligning ball bearings Self-aligning ball bearings: Between the inner ring of the two raceways and the outer ring with a spherical raceway, a drum-shaped roller bearing is assembled. It has the same self-aligning function as self-aligning ball bearings. When the shaft and casing deflect, it can be adjusted automatically without increasing the bearing burden. Spherical roller bearings can withstand radial loads and axial loads in two directions. 3. Working principle of deep groove ball bearing: Deep groove ball bearings mainly bear radial loads. When they only bear radial loads, the contact angl...

A vertical lift powered by an electric motor, equipped with a box-shaped pod,  elevator bearing  used Crew or transport goods in multi-storey buildings. There is also a step type, the step board is installed in Bring continuous operation, commonly known as automatic elevators. The structure of the elevator includes: Four spaces: Machine room part, shaft and pit part, car part, maintenance floor part; Eight major systems: Traction system, guidance system, car, door system, weight balance system, Electric drive system, electrical control system, safety protection system.

cold rolling machine is a new type of steel bar cold rolling processing equipment. The machine can process hot-rolled wire rods and hot-rolled coils with diameters between 6.5 mm and 12 mm into cold-rolled ribbed steel bars with finished product diameters between 5 mm and 12 mm. The cold-rolled ribbed steel bar rolled by the cold-rolling machine is an updated product of cold-drawn low-carbon steel wire in the prestressed concrete member. In the cast-in-place concrete structure, it can replace the first-class steel bar to save steel. It is a better kind of cold-worked steel. If speed regulation is not required during the rolling process of the  cold rolling machine  , an AC motor can be used; if speed regulation is required during the rolling process of the cold rolling machine , a DC motor can be used.

The  tractor clutch bearing  must have a certain amount of oil to lubricate when the bearing rotates, otherwise the bearing will burn Erosion and wear. If the bearing cannot be lubricated and maintained on schedule, the bearing is short of oil and it is easy to dry Working under the condition of rubbing or semi-dry friction, causing early wear, this wear is under the condition of lubrication Several times or even dozens of times, and eventually lead to damage in the long run. In addition, due to the high temperature of the engine It is transmitted to the separation bearing, and the high-speed rotation of the bearing also generates high temperature. Under this condition, the oil is very It is difficult to stay in the bearing, the bearing works continuously at high temperature, and the lubrication conditions are not good. It is also the cause of frequent damage

Elastic sheet gas dynamic pressure bearings ( Thin section bearing ) are more and more widely used in aerospace and civil high-speed machinery (such as gas turbochargers, high-speed centrifuges, oxygen generators, air-jet spinning) because of their high-speed dynamic performance. Yarn machine, liquid rocket propulsion system, rail transporter) and other fields. Their uniqueness lies in their outstanding performance, despite the weight and space constraints. Minimal, the usual square cross-section allows high precision of the mechanism.

First of all, the bearing classification of cranes will be classified according to the different parts used. The common parts used for bearings are: wheel group bearings, hook group bearings, pulley group bearings, drum group bearings, guide wheel groups, anti-roller groups, horizontal wheel groups, Supporting bearings such as eccentric wheels. Crane is a mechanical equipment with several lifting parts.  Crane bearing  is an indispensable part of crane operation. Lifting machinery equipment is an indispensable part of modern production, and bearings are an indispensable part of cranes. The bearing is an important basic component of lifting equipment, and its accuracy, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of the host. In hoisting machinery, bearings are high-precision products, which not only need comprehensive support from mathematics, physics and many other disciplines, but also require materials science, he...

As a renewable and clean energy source, wind power is rapidly developing all over the world. Large wind turbines are giant machinery. Nowadays, many 2MW wind power plants under construction have wind turbine blades with a length of about 40 meters, a rotating shaft with a height of 60 to 100 meters and total weight of more than 200 tons. Therefore, the bearings used in wind power must also be large, with an inner diameter ranging from 100 mm to 700 mm. Some models require bearings with an inner diameter of nearly 2 meters. Bearings for wind turbines require high reliability, because the bearings are designed to keep the windmill running for 20 years; and when the fault occurs, the parts are not easy to replace (the bearing is used at a long distance from the ground). Bearing manufacturers need to have a high degree of computer analysis technology and exquisite skills in materials and heat treatment, and need to master the testevaluation technology for large bearing . ZYS has been en...