Product Description

Supply Ability

Supply Ability
2000 Piece/Pieces per Month

Port crane 4 point contact slewing ring bearing 011.25.571.001 360x200x60mm

Product Description

 

Ø  History

l  Headquarter founded in the 1980s as a state-owned enterprise, reformed to be 1 limited liability company in 2005.

l  Start to produce slewing ring in 1995, have own brand name for slewing ring.

l  Four subsidiaries belong to the headquarter: Ring mill plant, Slewing ring plant, Wheel hub plant, ZheJiang Titanhorse International Trade Dept.

Ø  Company Scale

l  Total area: 100,000sq.m

l  Factory: 60,000sq.m

l  Office: 7,000sq.m

l  700 employees

l  Lines of product: forged raw rings (The raw material of slewing ring), Slewing rings, Wheel hub

Ø  Production Scale

l  Slewing ring 50,000pcs/month

l  Ring/flange  8,000pcs/month

l  Wheel hub   20,000pcs/month

Ø  Unique Advantage

l  6 series of slewing ring, the raceway diameter ranges from 200-5,000mm

l  Germany 5S standard site management and QC management engineering standards

l  ISO9001:2008, OHSAS18001:1999, ISO14001:2004

 

Operation & Maintanence

 

Suitable lubrication is necessary for durability of raceway and gear. Lubricating grease improves capability and service life of slewing bearing, while working condition, e.g. load, temperature, speed, and vibration, determines lubricant selection.   

Characteristics of recommended lubricant for slewing bearing:  

²  Lithium base grease

²  Minimum viscosity of base oil: 150 mm2/S

²  NLGI consistency grade: 2

²  Anti-friction and extreme pressure additive 

²  Working temperature: -300 Ca+1200 C

²  Four-ball test: Clinkering load STMD 2596 (NT24)>300

²  Maximum NDM value (revolving speed x raceway center diameter)

ü  For ball slewing bearing=60000

ü  For pin roller slewing bearing=30000

Lubricating grease compatibility table  

According to our experience, the lubricating greases listed in the following table are compatible with each other and with all parts of slewing bearing. Any other grease which is deemed compatible with any of the lubricating greases recommended by the Company is usable. However, molybdenum-containing disulphide MOSis strictly prohibited.

 

Grease for raceway of slewing bearing

 

Lubricating grease designation

 

Grease for gear

 

Aralub HLP2

ARAL

Aralub LFZ1

 

 

Rhus L 474/2

MOTUL/bECHEM

Berulit GA 400

 

 

Energrease LS-EP2

BP

EnergolwRL/GR 154 GS

 

 

Grease LMX

CASTROL

 

 

 

Epexa2/Epexelf2

ELF

Cardrexa DC1

 

 

Beacon EP2

ESSO

Surret Fluid NX

 

 

Mobilux EP2

MOBIL

Mobilgear OGL 007

 

 

Retina EP2-Alvania EPLF2

SHELL

Malleus GL 205

 

 

Multis EP2-Lical EP2

TOTAL FINA ELF

Ceran AD

 

             

 

 

Removal of Common Faults

 

Difficult turning of slewing bearing

Every slewing bearing goes through strict inspection and test run before being released from plant, so all of them are acceptable products. As the slewing bearing has pre-tightening force on its sealing face and frictional force of the sealing face should be overcome for turning, it’s normal that certain starting moment is needed when it is turned.

In case of clamping stagnation in turning, the following method should be taken to remove the trouble: 

 

 

Case

 

Cause analysis

 

Troubleshooting methods

Inflexible idling of new product

The slewing bearing has been stored for long time (e.g. over a half year) or the ambient temperature is low, which results in less liquidity of the grease inside, leading to inflexible operation. This case is prominent in cold regions and in winter.  

After force is exerted, if it works well without any abnormal sound, it can serve for normal serve, but new grease should be filled until it is oozed from the seal.

If operation is accompanied with any abnormal sound, check whether there is any damage caused during transport or storage and feedback the information to our after-sale service department for a solution.  

Inflexible  operation after installation

The mounting surface of the main machine does not match well with that of the slewing bearing, resulting in that after installation, axial clearance of the slewing bearing can’t compensate for deformation of the slewing bearing, raceway of the slewing bearing is distorted, and the roller moves with difficulty in raceway (sometimes with abnormal sound).

 

Rework mounting surface of the main machine to make it in compliance with the requirements; or treat the surface by filling in plastic or partial washer. If flatness is still unacceptable after completion of surface treatment, try to exchange for a slewing bearing with larger clearance.      

Bad gear engagement is caused by failure to adjust gear backlash according to radial top point of gear pitch circle (three teeth marked with green paint). Deformation is caused by compressing the slewing bearing at the top point, resulting in difficult turning or abnormal sound.  

Adjust gear and pinion engagement and gear backlash again as required. 

Impurities are jammed in the gear and pinion.  

Check and be sure that gear and pinion engagement is free of impurities. 

Inflexible operation in use

The sealing strip is broken, resulting in entry of impurities into raceway. 

 

Replace sealing strip or take effective sealing protection measures, e.g. installing guard plates.

Failure to lubricate it with sufficient grease periodically according to the maintenance requirement, resulting in abnormal wear and tear of raceway. 

Lubricate it with sufficient grease until grease is oozed out from the sealing strip. It’s noted that every oil cup should be oiled, and operation should be kept in oiling, if possible. If wear and tear is serious, the slewing bearing should be replaced. If you continue using it in short time, lubricate it with more amount of grease until grease overflows, so that the scrap iron is discharged as most as possible.  

Abnormal engagement between gear and pinion, with impurities or broken teeth 

Remove impurities (if any); replace the slewing bearing, if there is any broken tooth. 

Excavator turntable Single-row four-point contact slewing ring 571.25.571.002

Product Description

 

Model Number HS Series JG/T66-19999
Material 42CrMo/50Mn
Packaging  Details standard export wooden case
Roller Diameters 20mm
Internal  Diameters 450mm
Type Single-row 4 contact series

 

 

Packaging & delivery

Packaging Details
Carton packing
Port
HangZhou port,HangZhou port ZheJiang port
Picture Example:

 

Lead time:

Quantity(pieces) 1 – 100 >100
Lead time (days) 30 To be negotiated

Q1: Are you trading company or manufacturer ?

A1: We are factory.

 

Q2: How do I start purchase?

A2: You can email or contact with our online salesman, then get offer and shipping cost for our order..After payment done, we will ship goods on time.

 

Q3: What is the advantage about your company?

A3: Our company has professional team and professional production line.

 

Q4: Why should I choose your products?

A4: Our products are high quality and low price.

 

Q5: Any other good service your company can provide?

A5: Yes,we can provide good after-sale and fast delivery.
Bandrui (HangZhou) Precision Rotating Products Manufacturing Co., Ltd. is a professional bearing manufacturer Integrated company for R&D, manufacturing and after-sales service of rotating parts and rotating system assembly. Specializing in the production of various types of: split bearings, steel wire raceway bearings, various V-groove roller bearings, various non-standard bearings and precision self-aligning roller bearings, cylindrical roller bearings, deep groove ball bearings and other series of products.
Our company is located in HangZhou, HangZhou, ZheJiang Province. Our products cover paper making, metallurgy, textile, shipbuilding, agricultural machinery, chemical industry, mining machinery, engineering machinery, light industrial machinery, automobile manufacturing and other fields. The company is actively updating its equipment, actively pursuing its technology and actively working with its staff.
The company has a team engaged in R&D and manufacturing of rotary products for a long time, and a professional sales and technical service team to provide perfect after-sales and supporting services. Welcome to call Hanlai to discuss and exchange!

US $3.6
/ Piece
|
10 Pieces

(Min. Order)

###

Certification: ISO9001:2008, ISO9001:2000
Feature: Corrosion Resistant, Antimagnetic, Low Temperature, High Temperature, High Speed
Style: Without Outer Ring
Rows Number: Multiple
Load Direction: Radial Bearing
Material: Gcr15&Chrom Steel

###

Samples:
US$ 5/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Grease for raceway of slewing bearing

 

Lubricating grease designation

 

Grease for gear

 

Aralub HLP2

ARAL

Aralub LFZ1

 

 

Rhus L 474/2

MOTUL/bECHEM

Berulit GA 400

 

 

Energrease LS-EP2

BP

EnergolwRL/GR 154 GS

 

 

Grease LMX

CASTROL

 

 

 

Epexa2/Epexelf2

ELF

Cardrexa DC1

 

 

Beacon EP2

ESSO

Surret Fluid NX

 

 

Mobilux EP2

MOBIL

Mobilgear OGL 007

 

 

Retina EP2-Alvania EPLF2

SHELL

Malleus GL 205

 

 

Multis EP2-Lical EP2

TOTAL FINA ELF

Ceran AD

 

             

###

 

Case

 

Cause analysis

 

Troubleshooting methods

Inflexible idling of new product

The slewing bearing has been stored for long time (e.g. over a half year) or the ambient temperature is low, which results in less liquidity of the grease inside, leading to inflexible operation. This case is prominent in cold regions and in winter.  

After force is exerted, if it works well without any abnormal sound, it can serve for normal serve, but new grease should be filled until it is oozed from the seal.

If operation is accompanied with any abnormal sound, check whether there is any damage caused during transport or storage and feedback the information to our after-sale service department for a solution.  

Inflexible  operation after installation

The mounting surface of the main machine does not match well with that of the slewing bearing, resulting in that after installation, axial clearance of the slewing bearing can’t compensate for deformation of the slewing bearing, raceway of the slewing bearing is distorted, and the roller moves with difficulty in raceway (sometimes with abnormal sound).

 

Rework mounting surface of the main machine to make it in compliance with the requirements; or treat the surface by filling in plastic or partial washer. If flatness is still unacceptable after completion of surface treatment, try to exchange for a slewing bearing with larger clearance.      

Bad gear engagement is caused by failure to adjust gear backlash according to radial top point of gear pitch circle (three teeth marked with green paint). Deformation is caused by compressing the slewing bearing at the top point, resulting in difficult turning or abnormal sound.  

Adjust gear and pinion engagement and gear backlash again as required. 

Impurities are jammed in the gear and pinion.  

Check and be sure that gear and pinion engagement is free of impurities. 

Inflexible operation in use

The sealing strip is broken, resulting in entry of impurities into raceway. 

 

Replace sealing strip or take effective sealing protection measures, e.g. installing guard plates.

Failure to lubricate it with sufficient grease periodically according to the maintenance requirement, resulting in abnormal wear and tear of raceway. 

Lubricate it with sufficient grease until grease is oozed out from the sealing strip. It’s noted that every oil cup should be oiled, and operation should be kept in oiling, if possible. If wear and tear is serious, the slewing bearing should be replaced. If you continue using it in short time, lubricate it with more amount of grease until grease overflows, so that the scrap iron is discharged as most as possible.  

Abnormal engagement between gear and pinion, with impurities or broken teeth 

Remove impurities (if any); replace the slewing bearing, if there is any broken tooth. 

###

###

Model Number HS Series JG/T66-19999
Material 42CrMo/50Mn
Packaging  Details standard export wooden case
Roller Diameters 20mm
Internal  Diameters 450mm
Type Single-row four contact series

###

Quantity(pieces) 1  100 >100
Lead time (days) 30 To be negotiated
US $3.6
/ Piece
|
10 Pieces

(Min. Order)

###

Certification: ISO9001:2008, ISO9001:2000
Feature: Corrosion Resistant, Antimagnetic, Low Temperature, High Temperature, High Speed
Style: Without Outer Ring
Rows Number: Multiple
Load Direction: Radial Bearing
Material: Gcr15&Chrom Steel

###

Samples:
US$ 5/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Grease for raceway of slewing bearing

 

Lubricating grease designation

 

Grease for gear

 

Aralub HLP2

ARAL

Aralub LFZ1

 

 

Rhus L 474/2

MOTUL/bECHEM

Berulit GA 400

 

 

Energrease LS-EP2

BP

EnergolwRL/GR 154 GS

 

 

Grease LMX

CASTROL

 

 

 

Epexa2/Epexelf2

ELF

Cardrexa DC1

 

 

Beacon EP2

ESSO

Surret Fluid NX

 

 

Mobilux EP2

MOBIL

Mobilgear OGL 007

 

 

Retina EP2-Alvania EPLF2

SHELL

Malleus GL 205

 

 

Multis EP2-Lical EP2

TOTAL FINA ELF

Ceran AD

 

             

###

 

Case

 

Cause analysis

 

Troubleshooting methods

Inflexible idling of new product

The slewing bearing has been stored for long time (e.g. over a half year) or the ambient temperature is low, which results in less liquidity of the grease inside, leading to inflexible operation. This case is prominent in cold regions and in winter.  

After force is exerted, if it works well without any abnormal sound, it can serve for normal serve, but new grease should be filled until it is oozed from the seal.

If operation is accompanied with any abnormal sound, check whether there is any damage caused during transport or storage and feedback the information to our after-sale service department for a solution.  

Inflexible  operation after installation

The mounting surface of the main machine does not match well with that of the slewing bearing, resulting in that after installation, axial clearance of the slewing bearing can’t compensate for deformation of the slewing bearing, raceway of the slewing bearing is distorted, and the roller moves with difficulty in raceway (sometimes with abnormal sound).

 

Rework mounting surface of the main machine to make it in compliance with the requirements; or treat the surface by filling in plastic or partial washer. If flatness is still unacceptable after completion of surface treatment, try to exchange for a slewing bearing with larger clearance.      

Bad gear engagement is caused by failure to adjust gear backlash according to radial top point of gear pitch circle (three teeth marked with green paint). Deformation is caused by compressing the slewing bearing at the top point, resulting in difficult turning or abnormal sound.  

Adjust gear and pinion engagement and gear backlash again as required. 

Impurities are jammed in the gear and pinion.  

Check and be sure that gear and pinion engagement is free of impurities. 

Inflexible operation in use

The sealing strip is broken, resulting in entry of impurities into raceway. 

 

Replace sealing strip or take effective sealing protection measures, e.g. installing guard plates.

Failure to lubricate it with sufficient grease periodically according to the maintenance requirement, resulting in abnormal wear and tear of raceway. 

Lubricate it with sufficient grease until grease is oozed out from the sealing strip. It’s noted that every oil cup should be oiled, and operation should be kept in oiling, if possible. If wear and tear is serious, the slewing bearing should be replaced. If you continue using it in short time, lubricate it with more amount of grease until grease overflows, so that the scrap iron is discharged as most as possible.  

Abnormal engagement between gear and pinion, with impurities or broken teeth 

Remove impurities (if any); replace the slewing bearing, if there is any broken tooth. 

###

###

Model Number HS Series JG/T66-19999
Material 42CrMo/50Mn
Packaging  Details standard export wooden case
Roller Diameters 20mm
Internal  Diameters 450mm
Type Single-row four contact series

###

Quantity(pieces) 1  100 >100
Lead time (days) 30 To be negotiated

Types of Ball Bearings

There are several types of ball bearings: Double-row angular contact, Four-point contact, Self-aligning, and Ceramic hybrid. Here’s a brief description of each. For more information, read our article about Double-row angular contact ball bearings. You’ll be better informed about how they’re made. Also, learn about how the cages that hold the balls in place are secured with rivets.

Double-row, angular-contact bearing

Double-row, angular-contact ball bearings are similar in their contact surfaces in one direction, and the two pairs of bearings are installed axially opposite to one another. This design allows them to support combined loads in axial and radial directions. These types of bearings are used for high-precision, high-speed applications. They can be used in everything from turbines to dentistry equipment. Double-row, angular-contact bearings are available at Grainger, as are single-row versions.
Double-row, angular-contact ball bearings are a popular option for applications where high precision and high speed are required. The design features of these bearings are ideal for applications with axial space restrictions. In contrast, they are smaller than two single-row angular-contact bearings and are available in steel, polyamide, or brass cages. Whether you need a cage for high speed or hard operating conditions is up to you. If you are unsure about the right cage for your application, contact Schaeffler.
Single-row angular-contact ball bearings are the most common type of bearings. Double-row bearings are also available with a shielded outer ring, which protects the balls inside the bearing from external contaminants. Because these double-row bearings are a good choice for applications requiring high performance, they are often the most affordable option. They offer similar performance as single-row bearings but are much more rigid.
Preloading is a key performance characteristic for double-row angular-contact ball bearings. Preloading can decrease the service life of double-row angular-contact ball bearings by up to 380 percent. Alternatively, you can preload double-row angular-contact ball bearings by placing spacers between their outer rings. Good double-row angular-contact bearing installation will increase working accuracy and bearing life.
bearing

Four-point contact ball bearing

The Four Point Contact Ball Bearing Market can be segmented into three types: 35 Degree, 45 Degree, and Other. The 35 Degree segment is expected to witness the fastest growth over the next few years, owing to its increased operational speed and competence in axial and radial axis load handling. Other types of four-point contact ball bearings include the Miniature and Deep Groove varieties. These are widely used in automobiles, aerospace, and other industries.
These bearings are designed for oil-free screw compressors, and they feature an outer-ring guided brass cage to reduce friction and increase running accuracy. In addition, they have lower maintenance costs compared to conventional bearings. However, they have a higher mean roughness value than their counterparts. High-speed operations require high-speed bearings that can withstand fast speed changes. This is because of the higher friction rate, which results from four-point contact.
The Four-Point Contact Ball Bearing is a highly versatile product, as it can handle radial, thrust, and moment loads. Because of this, it is often the first choice for slow to moderate-speed applications. This design also has a simplified assembly process, requiring only a single double-half-turn to install. It is the first choice of many automotive OEMs because it is extremely efficient. If you want a ball bearing with these benefits, you should contact a local bearing company.
The Four-Point Contact Ball Bearing Market will continue to grow despite a tough economy and volatile trade conditions. Demand for automotive and aerospace components is expected to grow alongside a variety of technological advancements. Meanwhile, demand for energy-efficient products will continue to increase with changes in trade policy, an imbalance in the supply-side ecosystem, and geopolitical risk. And while all these factors will continue to drive the market growth, a few challenges are worth considering.
The Four-Point Contact Bearing is designed with the same basic structure as its two-point counterpart. In a four-point contact ball bearing, one ball can have four distinct points of contact with two rings. Two of these contact points may be in diagonal position. The two remaining contact points change position and accommodate radial loads. Consequently, the Four-Point Contact Bearing is more flexible and robust than its two-point counterparts.
bearing

Self-aligning ball bearing

The self-aligning ball bearing is an incredibly useful tool in many industries. This type of bearing has a sealing lip that makes contact with a smooth chamfer on the inner ring. Because of the self-aligning nature of these bearings, they are not prone to misalignment. They can withstand temperatures ranging from -30°C to 120°C and should not be heated prior to installation.
A self-aligning ball bearing is an elastomer-based spherical-shaped bearing with two rows of rolling elements. These bearings can accommodate large radial loads, and their outer ring raceway is curved to provide a spherical effect. The inner ring, or cage, can be either cylindrical or conical. The inner diameter of a self-aligning ball bearing is normally cylindrical, but some are conical. They typically have three oil holes.
When choosing a self-aligning ball bearing, look for a model with a large enough bearing diameter to accommodate the shaft’s bending. Self-aligning bearings may also be interchangeable with standard ball bearing assemblies. You can find individual values in manufacturer catalogues. These bearings are useful in limited applications, although they are not necessarily ideal for everything. For example, in applications where combined loads are the main concern, self-aligning ball bearings should only be used if the application requires minimal misalignment.
A self-aligning ball bearing is a highly-efficient, energy-efficient solution for a variety of applications. It is a simple, low-maintenance solution that makes your life easier. Its unique outer raceway allows restraining springs to absorb the deflection that is common in other bearings. The result is a cooler, smoother running vehicle. It also helps prevent misalignment, which makes it ideal for use in many applications.
The SKF self-aligning ball bearing is an excellent choice for applications involving heavy deflection of the shaft. They are the lowest-friction bearing available. Their steel plate reinforced seals prevent them from separating from the shaft during operation. They are also resistant to oil, making them the perfect solution for high-speed applications. In addition to this, they are designed to work in a wide range of temperatures.
bearing

Ceramic hybrid ball bearing

A hybrid ball bearing made from a combination of steel and ceramics is a good option for high-speed applications requiring electrical isolation. This combination offers an extended lifespan and minimal electrical corrosion or seizure risk. In addition, the hybrid ball bearings have less friction than steel bearings and can operate at low speeds. To learn more about this hybrid type of bearing, continue reading. We’ll also discuss how it can help your application.
Full ceramic balls are generally harder than steel, but they do have lower density, meaning they’re not subject to the same high centrifugal forces as steel balls. These benefits make ceramic ball bearings much more durable, with long lifespans. Both full and hybrid ceramic ball bearings are available from CZPT. Read on to learn more about each type. Here’s a look at some of the benefits of each. You’ll be pleasantly surprised.
A hybrid ball bearing consists of steel inner and outer rings and a ceramic ball. It can withstand high speeds and loads, but it’s also designed to operate in extreme temperatures. This hybrid ball bearing also requires minimal lubrication and is suitable for a variety of applications. Because of its unique characteristics, hybrid bearings are lightweight and hard, and they spin faster than steel balls. But how do you choose the right one for your application?
A ceramic ball bearing is better than a steel one for many applications. Its greater speed capability and lower friction allow it to operate at higher speeds than steel balls. It is also less sensitive to fluctuations in lubrication conditions than steel balls. They also tend to be cheaper, so it makes sense to invest in one. It’s worth your while. They last longer, and they don’t require a run-in period.
A hybrid ball bearing is the best choice for electric spindles with high speed and heavy loads. A hybrid ceramic ball bearing has the advantage of low heat and high stiffness, and can operate at high speeds and loads. This thesis explores the dynamic characteristics of a hybrid ceramic ball bearing, including analysis calculations and experiment verification. The results provide reliable data and lay the foundation for professional spindle optimum design tests. It is a worthy addition to any machine shop.

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editor by czh 2022-11-30