FRB Bearings Rotary table bearings Overview

The YRT Rotary table bearings consists of a thrust/centripetal seat ring, a thrust/centripetal spindle ring, a thrust washer, two needle holsters and a set of centripetal cylindrical rollers.The seat ring and shaft ring have uniformly distributed mounting screw holes.The bearing has high axial and radial bearing capacity.High tilt rigidity and high precision.Suitable for rotary table, chuck and milling cutter head as well as bearing configuration in measurement and experiment.This type of bearing has high requirements for matching equipment parts.The tightening torque of mounting screw should be controlled during installation.

Application: it is widely used in precision rotary table, vertical grinding machine, dividing head, hobbing machine, gear milling machine shaft and other precision equipment.

FRB Bearings Crossed roller bearings introduction

Crossed roller bearings are compact bearings with their rollers alternately crossed at right angles to each other between inner and outer ring.The rollers make line-contact with raceway surfaces,and,therefore,elastic deformation due to bearing loads is very small.They can take loads from any driections at the same time such as radial,thrust and moment loads.It is possible to make your design compact comparing to the usage of taper roller bearing and combination of two ball bearings.These bearings are widely used in the rotatin parts of industrial robots,machine tools,medical equipment,etc.,which require compactness,high rigidity and high rotational accuracy.

Features of crossed roller bearing:
High load capacity and high rigidity
Taking load of any direction and moment at the same time
Compactness contributes your sapce saving
Wide mounting variations for your best choice.

Supply FRB KDL.A.0744.00.10 external tooth inner flange slewing bearings

FRB BEARINGS was founded in 2009, is one specialized is engaged in the large and super large slewing bearings and non-standard bearing design, development, manufacture, the sale is a body comprehensive enterprise.Our company has a team of experienced bearing designers and technicians. The bearing design is all designed by bearing design software, and the drawings required by customers can be designed in a short time.

FRB BEARINGS mainly produces inner diameter at 200 mm to 6000 mm slewing bearings, slewing drive, crossed roller bearings, thin section ball bearings, tapered roller bearing and other bearing, the machining accuracy of P4 level.Products are widely used in precision machine tools, ports, mines, medical treatment, coal, cement, oil drilling, wind power generation, shield machines and defense industries.

What is the suitable temperature and working environment of the slewing bearing?

Slewing bearing in the machinery industry is known as the "joint" machine, is the relative motion between two objects, can withstand the axial force and radial force and overturning moment necessary important mechanical transmission of the original.

Swing bearing track and gear heat treatment:
The raceway of slewing ring is quenched by surface induction, and the quenching hardness is ensured to reach sufficient depth of hardened layer in HRC55 ~ 62.

KD210series flanged slewing ring231.20.0900.013Typ21-1050.0

The KD210 series bearings have flanges on one or two rings with dimensions ranging from 500 mm to 1200mm.Flange design reduces weight and allows device designers to more flexibly design the shape of adjacent mounting structures and the arrangement of bolts.RK series are suitable for a variety of applications when large size and light weight are the dominant factors in selecting bearing.The design features a deep groove raceway, which allows the bearing to bear radial, axial and torque loads at the same time.The spacing between the spacer ball and the bearing ball can reduce the torque of the rotation resistance, and the better performance can be obtained in the case of swinging motion.Perfect phase seal to help remove contaminants.

KD210 series bearing in light load, medium load cases have a wide range of applications, including: handling robot, packaging robot, painting robot, small crane, derrick and elevators, the industrial position sensor and rotary table, rotating chute, stretch wrapping machine, bottling machine, conveyor and related handling equipment, rotating display and so on.

How to solve the unflexible slewing bearing ?

For mechanical products, the slewing ring bearing is one of the indispensable parts, but sometimes we will find that it is not flexible would happen, if it is not flexible, so there will be a lot of trouble in use, and there is no way to good work, FRB Bearings appear to share slewing ring binding or movement inflexible reasons and solutions.

1. The deformation or broken tooth of the swing bearings causes the stuck or the movement is not flexible.
The solution: repair the gear, reweld the gear.

2. There is a problem with the slewing bearing sealing system, which will cause the entry sundries, such as stones, sand, etc. to become stuck or not sensitive to movement.
The solution: get rid of all the clutter.

3. Overload operation makes the slewing bearing movement not flexible.
The solution: reduce the workload.

4. The slewing ring position is not flat.
The solution: you need to change the platform position and work in a flat position.

5. There is a lack of lubricating oil in the sewing ring gear, and the grease increases the friction and the resistance, which will result in the insensitivity of movement.
The solution: add the same specification of lubricants or replace all lubricants.

After knowing the reason why the slewing bearing is not flexible and the solution, we don't need to worry about it in the future.In addition to these knowledge, it is also necessary for users to know how to use the slewing ring bearing and related maintenance methods.

Kaydon brand MT series slewing bearing MTE/STE-324T

The bearing section of MT series turntable bearings is rectangular, with dimensions ranging from 4 inches to 47 inches, 100 to 1,200 mm.This series of products is the most cost-effective.The internal structure of the bearing includes deep groove raceway and maximum size ball.This structure enables the series to withstand higher torque, thrust, and radial loads than typical four-point contact ball bearings.The bearing groove has a larger size of perfect seal and non-contact dust cover, which has certain effect on preventing pollutants.This design enables the series to perform well in many applications from light to heavy loads.

INA brand four-point contact ball slewing bearing VLU200544-N

Slewing ring is a kind of large bearing which can bear comprehensive load and can bear large axial, radial load and overturning moment at the same time.slewing bearing are generally equipped with mounting holes, internal or external gears, lubricating oil holes and sealing devices, which can make the design of the main engine compact, easy to guide and easy to maintain.

Turntable bearings in the real industrial application is very extensive, known as: "the machine is mainly should implement the joint", its use is widely used in: crane, rail crane, port cranes, deck cranes, metallurgical cranes, container cranes, excavators, filling machine, and CT machine standing wave therapy apparatus, navigation instrument, radar antenna, tanks and robots, and revolving restaurant, etc.

IMO flanged slewing bearing 91-200641-07132

Single row four-point contact ball flange slewing bearings which is consist of two seat, compact structure, light weight, rolls four point contact ball and circular arc, and can withstand the axial force and radial force and overturning moment.

Our products have high precision, long life, high quality and low price.The company's technical excellence, different customers to implement professional optimization design to meet the needs of customers.Our products are exported to Asia, Europe and America etc.more than 50 countries.

FRB Bearings supply excavators slewing bearings

Swing bearings(slewing rings,slewing ring gears,swing ring,turntable bearings) for Komatsu,Hitachi,Kobelco,Caterpillar,Volvo/Samsung,Deawoo/Doosan&Hyundai Excavators.

Slewing rings are usually used for low revolution while shaking and strained with an enormous axial force,moment and in some parts with radial force simultaneously.Consequently the requirements for loading are stricter than ordinary bearings.If the selection of the bearing has been wrong it will cause a great damage.Hence it is necessary to evaluate the exact forces acting on the slewing ring and to select the suitable slewing ring.

The advantages and disadvantages of crossed roller bearing and rotary table bearings

Rotary Table Bearing and cross roller bearings on the function and structure are similar, such as high rigidity, high precision, stable rotation torque, long life and other aspects of performance. In industrial robot joints, nc rotary table, dividing disc, vertical grinding machine, direct drive motor, precision medical equipment and other high-precision processing equipment more and more to abandon the traditional design, the better performance of high precision cross roller bearings.

Rotary Table Bearing domestic popular also called turntable bearing or rotary bearing, is a German company developed a kind of similar to the three row roller rotary bearing structure of the bearing type, relative to the three row roller combination of rotary bearing structure, the advantages of small size, precision grade, high rigidity, high bearing load and resistance to damage, etc. It is mainly used in high-precision CNC turret, nc dial, vertical machining center, vertical grinding machine, military radar and precision medical equipment.

Six key heat treatment technology problems in bearing manufacture

If the improper heat treatment, bearing heat treatment is the core of the bearing manufacturer, one of the key technology of heat treatment process and the physical properties of raw materials determines the bearing the final hardness, uniformity of hardness, abrasion resistance and contact fatigue life.What problems will arise?

Heat treatment deformation
Bearing parts in heat treatment, there is the thermal stress and organization stress, the internal stress can overlay or partially offset each other, is complex and changeable, because it can as the heating temperature, heating rate, cooling, cooling speed, parts of the change of the shape and size changes, so the heat treatment deformation is inevitable. Understanding and mastering the change rule of bearing parts can make the deformation of bearing parts (such as the ellipse of the ring, the size increase, etc.) in a controllable range, which is conducive to the production. Of course, mechanical collision during heat treatment will also cause deformation of parts, but such deformation can be reduced and avoided by improved operation.

FRB Bearings Cross roller bearing technological process

Due to the different types, structures, tolerances, technical requirements,materials and batches of cross roller bearings, the basic production process is not exactly the same.For precision bearings such as cross roller bearings and YRT turntable bearings, the production process is not different from that of ordinary bearings, and there is a slight difference in the processing of retaining frame and raceway.

FRB Bearings as a manufacturer specializing in the production of high precision cross roller bearing, detailed introduce cross roller bearings for the general customers the main components of the production process.

FRB Introduction of bearing heat treatment method

The quality of heat treatment is directly related to the quality of subsequent processing, which ultimately affects the performance and life of the parts.The heat treatment quality control of bearing parts is the most strict in the whole mechanical industry.Bearing heat treatment has made great progress in the past 20 years.Research on heat treatment technology and application technology;Development of new heat treatment equipment and related technologies....

The development of heat treatment

FRB Introduction of YRT series high precision rotary table bearing

As an important part of machine tool, rotary table bearings has always been the focus of machine tool design.As a key part of the workpiece, the rotary table bearing precision、rigidity and composite bearing capacity directly influence the machine tool processing performance.The choice of bearing plays a direct and decisive role.Traditional solution of the turntable bearings generally use two or more than two sets of radial and thrust bearings, the purpose is to make the turntable can also carry axial load, radial load and tilting moment, although this solution is mature, but there are also such as turntable structure design of complex, shortcomings and so on bearing inconvenient installation and maintenance.

FRB Bearings resolve how to select crossed roller bearings?

Cross roller bearing is more and more widely used in recent years, but how to choose the most suitable model and structure, is confused by the vast majority of using cross roller bearing customer problems, how to correct selection, FRB Bearings think can reference from the following several aspects.

1. Size range
Dimension is the most important parameters, the first thing to know that they need to use what size bearing, also can say that you need to install the bearing installation what size, then to determine the size of the bearing.

How to construct crossed roller bearings for optimal rigidity and easy Installation?

Machine designers are increasingly turning to crossed roller bearings for use in motion systems thanks to their high accuracy, rigidity and efficiency. This type of bearing uses alternately crossed rollers positioned at right angles to each other between inner and outer rings, which allows them to take radial, thrust and moment loads from any direction at the same time. Because the rollers make line contact with raceway surfaces, there's less deflection under load and more rigidity.

Crossed roller bearings are particularly suitable for applications with moderate rotational speed such as industrial robots, machine tools and medical equipment, especially because they come with a spacer to separate one roller from the other.

Common bearings failure and solutions

Bearing is an important part of machinery equipment,the bearing will be damaged in application.Different failure,FRB Bearings have different solutions.

1.Failure of grease or machine oil, wrong model selection
Solution: choose the right type of lubricant

2.Low oil level or insufficient grease
Solution: the lubricating oil must be below the center of the bottom of the rolling body, and the grease in the bearing box fills about 1/3 to 1/2 of the space

What is the function of the cross roller bearing in the crane rotary mechanism?

The cross roller bearing of the crane plays the role of connecting the carriage and chassis parts in the rotary mechanism, and supports the whole rotating part of the crane.If the damage of steel ball slewing bearing, rolling wear will affect the work of slewing mechanism, serious when slewing mechanism will be rotary, the phenomenon such as noise, heavy rotary hydraulic system pressure will exceed the rating at the same time.When the lifting and unloading are stopped, the vibration of the slewing bearing down or upward will be too large, indicating that the clearance volume of the rotary support is seriously exceeded.At this time, the rotary support should be repaired or replaced.The general cause of mechanical failure is the lack of maintenance and improper use of cross roller bearing.