China Professional 192.32.3550 Three Row Roller Slewing Ring Bearings 192.32.4000 Port Cranes CZPT Crane Marine Crane Swing Bearing Slewing Bearing wholesaler

Product Description

Please see details for  slewing ring bearing
if you need more details, please feel free to contact us for designing and producing

1. Why choose CZPT slewing bearings
Who we are?
We (HangZhou CZPT special heavy-duty and large bearing manufacturing CO., LTD) are a professional
bearing manufacturer in the world, established in 2000, specializing in slewing bearings, slewing drives
and special bearings, with design, production, sales, marketing and service from OD200mm to 8000mm.
For 18 years experiences, our bearings have flied to more than 50 countries.

Our technical team:
We have 60 employees, with 6 experienced engineers and professional technicists.
All our bearings are designed by CAD-programs, made according to customers’ special demands.
Our technical team can also verify safety & reliability depending on the load case and the strength of raceway
as well as gear and bolt connections.

Equipped with advanced manufacturing equipments and test instruments, all bearings are of uniform marking
and packing with superior quality, reasonable prices and perfect services.

We have been certificated by ISO9001:2008, and we are also aligned to international quality standards
from application consulting and engineering to productions, examinations, documentations and dispatch.
We will prepare additional test reports if customers need.

2. Structure of CZPT slewing bearings
Main Types:
Single row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearing
Three row cylindrical roller slewing bearings
BALL & ROLLER combined slewing bearings
Flanged slewing ring bearing
Gear Type:
Slewing bearings with external gear
Slewing bearings with internal gear
Slew bearings without gear
Flange type:
Slewing bearings with external flange and internal gear
Slew rings with internal flange and external gear
Slew bearings with external and internal flange

3. About CZPT bearings Advantages:
1. introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building. 
2. Featured products: slewing bearing and slewing drive
3. Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4. Workers: 60
5. Certificate: ISO9001:2008, 3.1 certificate, CCS certificate
All CZPT slew rings can betested by the 3 rd party inspection organization if customer requires, such as BV, CCS, SGS, LR, ABS and so on. All swing bearings inspection reports will be supplied to customers, including raw material certificate, heat treatment certificate, UT&PT and so on.
6. Annual Exportation: 8 million USD
7. Warranty Period: All CZPT slewing ring bearings have a warranty period of 18 months, for some special working condition, warranty period can be lengthened to 3-4 years.
8. Production Time: All CZPT slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
9. Technical Control
All CZPT slewing ring bearings are forged rings with material steel 50Mn or 42CrMo, slewing rings are machined by CNC lathe, slew bearings raceway are quenched via medium-frequency hardening with hardness 55-60HRC, turntable bearings are drilled holes by CNC drilling machine, slew gears are machined by hobbing machine with gear quenched if required, swing bearings then are grinded by grinding machine with higher precision.

4. CZPT Slewing Bearing Packing 
1. Basic Packing
Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers  demand to be packed;

2. CZPT slewing ring bearings can be packed by different ways.
If bearing diameter is less than 2300mm, slewing rings will be usually packed by square plywood case.
If bearing diameter is more than 2300mm, slewing rings can be packed by square plywood case, round plywood case, or steel tripod. Every package way can be totally kept goods safely.

5. CZPT Slewing Bearing Transportation:
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.

4. Application:
For harbour and shipyard crane, Marine machine, port hoisting machine, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments.

If you need more information about our product, pls feel free to contact us.
We will get back to you ASAP.

Slewing Ring Bearings with external gear

Slewing Ring Bearings with internal gear
192.50.6300. 990.41.1502

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Standard or Nonstandard: Standard
Feature: Cold-Resistant, Corrosion-Resistant, Heat-Resistant
Sealing Gland: Sealed On Both Sides
Rolling-Element Number: Multiple-Column
Roller Type: Straight Raceway
Material: Bearing Steel
US$ 11000/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

roller bearing

Can you describe the various types of seals and shields used with roller bearings for contamination prevention?

Roller bearings are often equipped with seals and shields to prevent contamination from entering the bearing and to retain lubrication. These protective devices help maintain the performance, reliability, and longevity of the bearings in various applications. Here’s a description of the various types of seals and shields commonly used with roller bearings:

  • Contact Seals:

Contact seals, also known as lip seals or radial seals, are designed to create a physical barrier between the bearing and its external environment. They consist of a flexible lip made of elastomeric material, such as nitrile rubber or fluoroelastomer, which makes contact with the inner or outer ring of the bearing. Contact seals provide an effective seal against solid and liquid contaminants, preventing their ingress into the bearing. They also retain the lubricating grease inside the bearing, minimizing the need for frequent relubrication. Contact seals are commonly used in applications where moderate sealing performance is required, such as electric motors, pumps, and automotive wheel bearings.

  • Non-Contact Seals:

Non-contact seals, also known as labyrinth seals or gap seals, do not make physical contact with the bearing surfaces. They feature a series of labyrinth-like channels or grooves that create a tortuous path for contaminants, effectively blocking their entry into the bearing. Non-contact seals provide less friction compared to contact seals, which can be beneficial for applications that require high-speed operation. However, they may offer slightly lower sealing performance in extremely dusty or wet environments. Non-contact seals are commonly used in applications such as machine tools, industrial gearboxes, and high-speed rotating equipment.

  • Metal Shields:

Metal shields, also known as metal covers or metal shields, are rigid plates made of metal, typically steel, that are attached to the bearing outer ring. They provide a physical barrier against larger contaminants, such as dirt and debris, while allowing for limited lubricant flow. Metal shields offer good protection in applications where the primary concern is preventing large solid particles from entering the bearing. They are commonly used in applications such as electric motors, fans, and agricultural machinery.

  • Rubber Shields:

Rubber shields, also known as rubber seals or non-metallic shields, are made of synthetic rubber materials and are attached to the bearing outer ring. They provide effective protection against both solid and liquid contaminants, ensuring a high degree of sealing performance. Rubber shields offer better sealing capabilities compared to metal shields but may introduce slightly more friction. They are commonly used in applications that require enhanced sealing performance, such as automotive wheel bearings, conveyor systems, and food processing equipment.

  • Felt Seals:

Felt seals are made of compressed or impregnated felt material and are used for light-duty sealing applications. They provide a barrier against larger solid contaminants and certain types of liquid contaminants. Felt seals are commonly used in low-speed applications, such as pillow block bearings and lightly loaded machinery.

In summary, roller bearings can be equipped with various types of seals and shields to prevent contamination. Contact seals, non-contact seals, metal shields, rubber shields, and felt seals are commonly used depending on the specific application requirements. These protective devices play a vital role in maintaining the cleanliness and lubrication of the bearing, ensuring optimal performance, reliability, and longevity.

roller bearing

Can you provide examples of machinery or equipment that rely on precision roller bearings?

Precision roller bearings are indispensable components in various machinery and equipment that require high accuracy, tight tolerances, and smooth operation. These bearings are designed to provide exceptional precision and reliability in demanding applications. Here are some examples of machinery and equipment that rely on precision roller bearings:

  • Machine Tools:

Precision roller bearings are extensively used in machine tools such as milling machines, lathes, grinding machines, and machining centers. These bearings ensure precise movement and positioning of the tooling components, enabling accurate cutting, shaping, and machining operations. The high precision and rigidity of roller bearings contribute to superior machining quality and dimensional accuracy.

  • Robotics:

In robotics applications, precision roller bearings are crucial for achieving accurate and repeatable motion control. They are used in robot joints, arms, and end-effectors to ensure precise movement, positioning, and load handling. Precision bearings enable robots to perform tasks with high accuracy and reliability, making them ideal for industrial automation, assembly lines, and advanced robotic systems.

  • Optical and Imaging Equipment:

Precision roller bearings are employed in optical and imaging equipment, including cameras, telescopes, microscopes, and precision measurement instruments. These bearings support the moving components, such as lenses, mirrors, and stages, ensuring smooth and precise positioning. The high precision and low runout of roller bearings contribute to sharp imaging, accurate measurements, and stable optical performance.

  • Coordinate Measuring Machines (CMMs):

CMMs are used for precise dimensional measurement and inspection in manufacturing and quality control processes. Precision roller bearings are utilized in the moving axes and probe systems of CMMs to provide accurate and repeatable positioning. These bearings enable CMMs to achieve precise measurements with tight tolerances, ensuring the accuracy and reliability of dimensional inspection.

  • Semiconductor Manufacturing Equipment:

In the semiconductor industry, precision roller bearings are critical in wafer handling, lithography systems, and other semiconductor manufacturing processes. They contribute to the precise alignment and movement of components, such as wafer stages, reticles, and masks. The high precision and low runout of roller bearings are essential for achieving the stringent dimensional requirements in semiconductor fabrication.

  • High-Speed Spindles:

Precision roller bearings are employed in high-speed spindles used in various applications, including CNC machining, milling, and grinding operations. These bearings enable the spindles to operate at high rotational speeds while maintaining exceptional precision and stability. Precision bearings ensure minimal vibration, runout, and heat generation, allowing for efficient and high-quality machining processes.

These examples represent just a few of the many machinery and equipment types that rely on precision roller bearings. Other applications include printing presses, textile machinery, medical devices, aerospace systems, and more. Precision roller bearings contribute to the overall performance, accuracy, and reliability of these systems, enabling advanced manufacturing, automation, and technological advancements.

roller bearing

Can you describe the load-carrying capacity and load ratings of roller bearings?

Load-carrying capacity and load ratings are crucial parameters that determine the performance and reliability of roller bearings. Understanding these concepts is important for selecting the appropriate roller bearing for a given application. Here’s a detailed explanation of load-carrying capacity and load ratings in roller bearings:

  • Load-Carrying Capacity:

The load-carrying capacity of a roller bearing refers to its ability to support and distribute loads without excessive deformation or premature failure. It is a measure of the maximum load that a bearing can withstand under specific operating conditions. The load-carrying capacity depends on various factors, including the bearing’s design, materials, dimensions, and lubrication. Roller bearings are designed to handle different types of loads, including radial loads, axial loads, and combined loads.

  • Radial Load:

Radial load refers to the load that acts perpendicular to the axis of rotation. In roller bearings, the load-carrying capacity for radial loads is determined by the size and arrangement of the rolling elements (rollers) and the raceways. The larger the contact area between the rollers and the raceways, the higher the radial load-carrying capacity of the bearing. Roller bearings are commonly used in applications with significant radial loads, such as in the wheels of vehicles or heavy machinery.

  • Axial Load:

Axial load refers to the load that acts parallel to the axis of rotation. Roller bearings can handle axial loads through different mechanisms, depending on their design. Thrust roller bearings, for example, use cylindrical or tapered rollers arranged in a specific orientation to accommodate axial loads. Spherical roller bearings utilize barrel-shaped rollers to distribute axial loads. The load-carrying capacity for axial loads depends on factors such as the number and size of the rollers and the contact angle. Roller bearings are commonly used in applications where axial loads are present, such as in gearboxes or thrust applications.

  • Combined Load:

Combined loads refer to the simultaneous presence of both radial and axial loads. Roller bearings are designed to handle combined loads by distributing the load between the radial and axial components. The load-carrying capacity for combined loads depends on the bearing’s design, the arrangement of the rollers, and the contact angles. By properly selecting and applying roller bearings, machinery and equipment can effectively handle complex loading conditions.

  • Load Ratings:

Load ratings are standardized values that provide information about the maximum load a roller bearing can handle under specific operating conditions. Load ratings are typically specified by manufacturers and can be found in bearing catalogs or technical documentation. The two main load ratings for roller bearings are:

  • Dynamic Load Rating:

The dynamic load rating indicates the maximum load that a bearing can withstand for a specified number of rotations (usually one million) without developing excessive wear or fatigue. It is based on statistical calculations and represents a hypothetical load under ideal conditions. The dynamic load rating is used to compare the load-carrying capacity of different bearings and assist in bearing selection for a given application.

  • Static Load Rating:

The static load rating indicates the maximum load that a bearing can withstand without permanent deformation or failure while at rest. Unlike the dynamic load rating, the static load rating is not based on the number of rotations but on the bearing’s ability to support a load without experiencing excessive stress. The static load rating is particularly important in applications where the bearing operates under static or slowly varying loads.

It’s important to note that load ratings are provided as reference values and should be used as guidelines for bearing selection. Actual operating conditions, such as speed, temperature, lubrication, and external factors, can affect the load-carrying capacity of a roller bearing. Consulting the manufacturer’s documentation and considering the specific application requirements are essential for accurate bearing selection and ensuring optimal performance and reliability.

China Professional 192.32.3550 Three Row Roller Slewing Ring Bearings 192.32.4000 Port Cranes CZPT Crane Marine Crane Swing Bearing Slewing Bearing   wholesalerChina Professional 192.32.3550 Three Row Roller Slewing Ring Bearings 192.32.4000 Port Cranes CZPT Crane Marine Crane Swing Bearing Slewing Bearing   wholesaler
editor by CX 2024-02-28

Roller Bearing

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