Product Description

PRODUCT PICTURES


  OUR SERVICES

We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.

 BEARING:
  — Dimensions
  — Material
  — Tolerance standard

APPEARANCE:
  — Logo (Laser Marking)
  — Package Design

40+ YEARS EXPERIENCE 
CONTINUOUS AND STABLE DELIVERY OF PRODUCTS.

With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.

We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining.  All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.

OWN HEAT TREATMENT 
CONTROALLABLE COST AND QUALITY.

Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time

We have 6 heat treatment production lines.

Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.
 

OUTSTXIHU (WEST LAKE) DIS.  QUALITY
LOW NOISE, LOW FRICTION AND LONG LIFE.

All our products are characterized by low noise, low friction and long life.  This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.

Our products fully meets the requirements of national and international standards according to the testing result of roughness, roundness, hardness, vibration noise, vibration velocity.

PACKING
PACKAGING THAT HELPS SELL.

1, Inner package
   Corrosion and Dust Proof PE plastic film  / bag packing + Tube packing, or Wrapping  tape for larger bearings.

2, Corrugated Individual Box
   Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
  Corrugated carton + Wooden pallet 

MODERN WELL-ORGANIZED WAREHOUSE

  · Constant temperature (20°C) and humidity (RH 52%) warehouse
  · Hundreds of models on hand, short delivery time.
 

HONOR & SYSTEM CERTIFICATES

EXHIBITION

SAMPLES POLICY 

 FREE SAMPLES AND SHIPPING

 We are happy to send you free samples of our bearings for field   testing. All transportation costs will be paid by us.

 Please note: Depending on the model and value of samples,   this policy may not apply!

 Please contact our sales staff for details.

TRANSPORTATION
FASTEST DELIVERY TO CUSTOMERS

CUSTOMERS FEEDBACK

PAYMENT TERMS 
To facilitate your payment, we offer a variety of options! 

    
 

FAQ

1, About the lead time.
 
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:

If the model your Preferred is Sufficient stock Lead Time
Regular models YES Within 7 days
Regular models NO Within 30 days
Non-regular model NO About 50 days

For accurate estimate, please contact with our sale stuff. Thanks.

2, Minimum order quantity. 
  

Even just ONE piece of bearing is ok for us.

  
3, If you don’t know which model is the right choice…
  

We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.

4, Factory Inspection

We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you.

OPTIONS OF SPECIFICATION AND STHangZhouRD
 

Subject Symbol Description
Material of Housing N/A Cast Iron/ Steel
Stainless Steel
Press Steel Plate
Plastic
Bearing Type Code UC Cylindrical bore, with set screws
UK Tapered bore (for adapter)
NA/UEL Cylindrical bore (with eccentric locking collar)
UE Cylindrical bore with eccentric locking collar (light duty type)
UB  Flat head at 1 end, with set screws (light duty type)
SB Cylindrical bore, with set screws (light duty type)
SA Cylindrical bore, with eccentric locking collar
SU Cylindrical bore, with set screws
Housing Type Code P Pillow block type
PA Tapered-base pillow block type
LP Light duty pillow block type
IP Thick section pillow block type
HP Center height pillow block type
F Square-flanged type
FA Adjustable rhombic-flanged type
FB Three-bolt flange type
FL Rhombic-flanged type
FC Round-flanged type with spigot joint
FS Square-flanged type
C Cartridge type
T Take-up type
SP Pillow block type (stainless-type)
ST Take-up type (stainless-series)
Sealing Type RS Rubber seal on 1 side.
2RS Rubber seals on both sides.
RZ Rubber seal on 1 side. (non-contact)
2RZ Rubber seal on both sides(non-contact)
Z Metal shield on 1 side.
2Z Metal shields on both sides.
RSZ Rubber seal on 1 side, metal shields on other side
RZZ Rubber seal on 1 side, metal shields on other side
 (non-contact)
L2 Double-lip seal
L3 Triple-lip seal

PRODUCT PARAMETERS

This tech sheet may not contain all or every piece of information you want to know. Please contact our sales staff to obtain or compare the information.
                                                                                                                                                             In metric: mm

Bearing No. Shaft Dia Dimensions(mm) Weight 
(kg)
d D Bi Be N M G Ds
mm mm
UC202 15 40 27.4 14 11.5 15.9 4.5 M5×0.8 0.14
UC203 17 40 27.4 14 11.5 15.9 4.5 M5×0.8 0.13
UC204 20 47 31 17 12.3 18.7 5 M6×1.0 0.18
UC205 25 52 34.1 17 14.3 19.8 5 M6×1.0 0.22
UC206 30 62 38.1 19 15.9 22.2 5 M6×1.0 0.34
UC207 35 72 42.9 20 17.5 25.4 7 M8×1.0 0.52
UC208 40 80 49.2 21 19 30.2 8 M8×1.0 0.68
UC209 45 85 49.2 22 19 30.2 8 M8×1.0 0.78
UC210 50 90 51.6 22 19 32.6 10 M10×1.25 0.85
UC211 55 100 55.6 25 22.2 33.4 10 M10×1.25 1.22
UC212 60 110 65.1 27 25.4 39.7 10 M10×1.25 1.65
UC213 65 120 65.1 29 25.4 39.7 10 M10×1.25 1.96
UC214 70 125 74.6 30 30.2 44.4 12 M12×1.5 2.06
UC215 75 130 77.8 30 33.3 44.5 12 M12×1.5 2.3
UC216 80 140 82.6 33 33.3 49.3 12 M12×1.5 2.79
UC217 85 150 85.7 35 34.1 51.6 12 M12×1.5 3.59
UC218 90 160 96 37 39.7 56.3 12 M12×1.5 4.56
UC305 25 62 38 20 15 23 6    M6×1.0 0.35
UC306 30 72 43 23 17 26 6 M8×1.0 0.56
UC307 35 80 48 25 19 29 8 M8×1.0 0.71
UC308 40 90 52 27 19 33 10 M10×1.25 1
UC309 45 100 57 29 22 35 10 M10×1.25 1.36
UC310 50 110 61 32 22 39 12 M12×1.50 1.65
UC311 55 120 66 34 25 41 12 M12×1.50 2.08
UC312 60 130 71 36 26 45 12 M12×1.50 2.6
UC313 65 140 75 38 30 45 12 M12×1.50 3.24
UC314 70 150 78 40 33 45 12 M12×1.50 3.91
UC315 75 160 82 42 32 50 14 M14×1.50 4.7
UC316 80 170 86 44 34 52 16 M16×1.50 5.06
UC317 85 180 96 46 40 56 16 M16×1.50 6.9
UC318 90 190 96 48 40 56 16 M16×1.50 8.03
UC319 95 200 103 50 41 62 16 M16×1.50 8.91
UC320 100 215 108 54 42 66 18 M18×1.50 11.2

 

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Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Raceway: Deep Groove Raceway
Material: Bearing Steel
Bearing Block Model: PA
Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

ball bearing

How does Preload Affect the Performance and Efficiency of Ball Bearings?

Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:

  • Reduction of Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.

  • Increased Stiffness:

Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.

  • Minimized Axial Play:

Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.

  • Enhanced Rigidity:

The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.

  • Reduction in Ball Slippage:

Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.

  • Improved Running Accuracy:

Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.

  • Optimized Performance at High Speeds:

Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.

  • Impact on Friction and Heat Generation:

While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.

  • Application-Specific Considerations:

The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.

Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.

ball bearing

What Role do Seals and Shields Play in Protecting Ball Bearings from Dirt and Debris?

Seals and shields are critical components of ball bearings that play a crucial role in protecting them from dirt, debris, moisture, and contaminants in various applications. These protective features help maintain the integrity of the bearing’s internal components and ensure reliable operation. Here’s how seals and shields contribute to bearing protection:

  • Contaminant Exclusion:

Seals and shields create a physical barrier between the external environment and the bearing’s interior. They prevent dust, dirt, water, and other contaminants from entering the bearing and coming into contact with the rolling elements and raceways.

  • Lubrication Retention:

Seals and shields help retain lubrication within the bearing. They prevent the lubricant from escaping and contaminants from entering, ensuring that the bearing remains properly lubricated for smooth operation and reduced friction.

  • Corrosion Prevention:

Seals and shields protect bearing components from exposure to moisture and corrosive substances. By preventing moisture ingress, they help extend the bearing’s lifespan by minimizing the risk of corrosion-related damage.

  • Extended Bearing Life:

Seals and shields contribute to the overall longevity of the bearing by reducing wear and damage caused by contaminants. They help maintain a clean internal environment, which promotes proper rolling contact and minimizes the risk of premature failure.

  • Enhanced Performance in Harsh Environments:

In applications exposed to harsh conditions, such as outdoor machinery or industrial settings, seals and shields are vital. They protect bearings from abrasive particles, chemicals, and extreme temperatures, ensuring reliable performance despite challenging conditions.

  • Noise and Vibration Reduction:

Seals and shields can help reduce noise and vibration generated by the bearing. They provide additional damping and stability, contributing to smoother operation and enhanced user comfort in noise-sensitive applications.

  • Customized Protection:

Manufacturers offer a variety of seal and shield designs to suit different application requirements. Some seals provide higher levels of protection against contamination, while others are designed for high-speed or high-temperature environments.

  • Trade-Offs:

While seals and shields offer significant benefits, they can also introduce some friction due to contact with the bearing’s inner or outer ring. Engineers must balance the level of protection with the desired operating characteristics, considering factors like friction, speed, and environmental conditions.

Overall, seals and shields play a vital role in maintaining the integrity and performance of ball bearings. By effectively preventing contaminants from entering and preserving lubrication, they ensure the smooth and reliable operation of machinery and equipment in a wide range of applications.

ball bearing

What are the Different Components that Make up a Typical Ball Bearing?

A typical ball bearing consists of several essential components that work together to reduce friction and support loads. Here are the main components that make up a ball bearing:

  • Outer Ring:

The outer ring is the stationary part of the bearing that provides support and houses the other components. It contains raceways (grooves) that guide the balls’ movement.

  • Inner Ring:

The inner ring is the rotating part of the bearing that attaches to the shaft. It also contains raceways that correspond to those on the outer ring, allowing the balls to roll smoothly.

  • Balls:

The spherical balls are the rolling elements that reduce friction between the inner and outer rings. Their smooth rolling motion enables efficient movement and load distribution.

  • Cage or Retainer:

The cage, also known as the retainer, maintains a consistent spacing between the balls. It prevents the balls from touching each other, reducing friction and preventing jamming.

  • Seals and Shields:

Many ball bearings include seals or shields to protect the internal components from contaminants and retain lubrication. Seals provide better protection against contaminants, while shields offer less resistance to rotation.

  • Lubricant:

Lubrication is essential to reduce friction, wear, and heat generation. Bearings are typically filled with lubricants that ensure smooth movement between the balls and raceways.

  • Flanges and Snap Rings:

In some designs, flanges or snap rings are added to help position and secure the bearing in its housing or on the shaft. Flanges prevent axial movement, while snap rings secure the bearing radially.

  • Raceways:

Raceways are the grooved tracks on the inner and outer rings where the balls roll. The shape and design of the raceways influence the bearing’s load-carrying capacity and performance.

  • Anti-Friction Shield:

In certain high-speed applications, a thin anti-friction shield can be placed between the inner and outer rings to minimize friction and heat generation.

These components work together to enable the smooth rolling motion, load support, and reduced friction that characterize ball bearings. The proper design and assembly of these components ensure the bearing’s optimal performance and longevity in various applications.

China OEM Machinery Pillow Block Short Base Ucpa 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 Take up Insert Units Ball Bearings with Set Crews   with Best SalesChina OEM Machinery Pillow Block Short Base Ucpa 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 Take up Insert Units Ball Bearings with Set Crews   with Best Sales
editor by CX 2024-03-27

Steel Ball Bearings

As one of the leading steel ball bearings manufacturers, suppliers, and exporters of mechanical products, We offer steel ball bearings and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of steel ball bearings.

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