Product Description
Welcome to choose KORTON INDUSTRIAL LIMITED.
NO 1. our adwantages:
1. 14 years bearing products manufacturing and 4 years exporting experiences.
2. OEM order and non-standard bearing order can be accepted.
3. Our main bearing products include Deep groove ball bearings, tapered roller bearings, cylindrical roller bearings, spherical ball bearings, spherical roller bearings, angular contact bearings, needle roller bearings, thrust ball bearings, spherical plain bearings, spherical bearings, automotive bearings pump bearings, and many nonstandard bearings are also in our product range.
4. Sample available
NO 2. Description: Tapered Roller Bearing
Size range
Tapered Roller Bearings CZPT basic dimensions are listed in the data table size,
Single row tapered roller bearings:
Inner diameter range: 20mm ~ 1270mm
Diameter size range: 40mm ~ 1465mm
Width range: 15mm ~ 240 mm
Double row tapered roller bearings:
Inner diameter range: 38mm ~ 1560mm
Diameter size range: 70mm ~ 1800mm
Width range: 50mm ~ 460 mm
Four tapered roller bearings:
Inner diameter range: 130mm ~ 1600mm
Diameter size range: 200mm ~ 2000mm
Width range: 150mm ~ 1150 mm
Race: we use the most advanced technology-cold extrusion process. Besides, the race will make 2 or 3 times temper to guarantee its high precision.
Rolling element: we use the rolling technology to process the roller and the steel ball of high precision bearing, the most advantage of our technology is to promote productive and productive efficiency. At the same time, our technology can prolong the bearing working life. The hardness and the diamention stability will also promote.
Steel cage: in order to avoid avoid cracks and guarantee the hardness, we use pattern “high temperature+long time”, our cage of high precision bearing have reached advanced level in china at surface abrasion resistance and fatigue strength.
NO 3. OEM all brand bearing
1. deep groove ball bearing 6000,6200,6300,6400,61800,61900,Z,RS,ZZ,2RS
2. spherical roller bearing 22200,22300,23000,24000,23100,24100,CA,CC,E,W33
3. cylindrical roller bearing N,NU,NJ,NN,NUP,E,ECP,ECM,ECJ
4. taper roller bearing 35710,30300,32200,32300,31300,32000
5. Aligning ball bearing 1200,1300,2200,2300,
6. needle roller bearing NA,NAV,NK,NKI,RNA,NK,RNAV,ZKLF,ZKLN,ZARF,ZARN
7. thrust ball bearing 51100,51200,51300,51400,E,M
8. angular contact ball bearing7000,7100,7200,7300,AC,BECBM,C
9. spherical plain bearing GE,GEG,GEEW,U,UC,UG,GX,GAC,SA,SABP
10.Wheel hub bearing /ceramic bearing/plastic bearing/lazy susan bearing
NO 4. Tapered Roller Bearing Specification:
| Seals Types | 2RS,OPEN |
| Vibration Level | Z1V1,Z2V2,Z3V3 |
| Clearance | C2,C0,C3,C4,C5 |
| Tolerance Codes | ABEC-1,ABEC-3,ABEC-5 |
| Materral | GCr15-China/AISI52100-USA/Din100Cr6-Germany |
| MOQ | 1Set at least |
| Delivery Time | 15-45 days after contract |
| Payment Terms | TT/PAPAL/WESTERN UNION |
| Package | Tube package+outer carton+pallets; Single box+outer carton+pallets; Tube packge+middle box+outer carton+pallets; According to your requirement |
NO 5. Tapered roller bearing Models and Size:
| Bearing 31304-31330 | Principal Dimensions (mm) | Mass | ||
| No. | d | D | B | kg |
| 31304 | 20 | 52 | 15 | 0.175 |
| 31305 | 25 | 62 | 17 | 0.26 |
| 31306 | 30 | 72 | 19 | 0.39 |
| 31307 | 35 | 80 | 21 | 0.52 |
| 31308 | 40 | 90 | 23 | 0.72 |
| 31309 | 45 | 100 | 25 | 0.95 |
| 31310 | 50 | 110 | 27 | 1.2 |
| 31311 | 55 | 120 | 29 | 1.55 |
| 31312 | 60 | 130 | 31 | 1.9 |
| 31313 | 65 | 140 | 33 | 2.35 |
| 31314 | 70 | 150 | 35 | 2.95 |
| 31315 | 75 | 160 | 37 | 3.5 |
| 31316 | 80 | 170 | 39 | 4.05 |
| 31317 | 85 | 180 | 41 | 4.6 |
| 31318 | 90 | 190 | 43 | 5.9 |
| 31319 | 95 | 200 | 45 | 6.95 |
| 31320 | 100 | 215 | 51 | 8.6 |
| 31321 | 105 | 225 | 53 | 9.65 |
| 31322 | 110 | 240 | 57 | 12 |
| 31324 | 120 | 260 | 62 | 15.3 |
| 31326 | 130 | 280 | 66 | 19.1 |
| 31328 | 140 | 300 | 70 | 23 |
| 31330 | 150 | 320 | 75 | 28 |
| taper roller bearing 32203 – 32244 series | ||||
| Bearing | Principal Dimensions (mm) | Mass | ||
| No. | d | D | B | kg |
| 32203 | 17 | 40 | 16 | 0.105 |
| 32204 | 20 | 47 | 18 | 0.151 |
| 32205 | 25 | 52 | 18 | 0.19 |
| 32206 | 30 | 62 | 20 | 0.3 |
| 32207 | 35 | 72 | 23 | 0.44 |
| 32208 | 40 | 80 | 23 | 0.53 |
| 32209 | 45 | 85 | 23 | 0.58 |
| 32210 | 50 | 90 | 23 | 0.61 |
| 32211 | 55 | 100 | 25 | 0.83 |
| 32212 | 60 | 110 | 28 | 1.15 |
| 32213 | 65 | 120 | 31 | 1.5 |
| 32214 | 70 | 125 | 31 | 1.6 |
| 32215 | 75 | 130 | 31 | 1.7 |
| 32216 | 80 | 140 | 33 | 2.05 |
| 32217 | 85 | 150 | 36 | 2.6 |
| 32218 | 90 | 160 | 40 | 3.35 |
| 32219 | 95 | 170 | 43 | 4.05 |
| 32220 | 100 | 180 | 46 | 4.9 |
| 32221 | 105 | 190 | 50 | 6 |
| 32222 | 110 | 200 | 53 | 7.1 |
| 32224 | 120 | 215 | 58 | 9.15 |
| 32226 | 130 | 230 | 64 | 11.5 |
| 32228 | 140 | 250 | 68 | 14.5 |
| 32230 | 150 | 270 | 73 | 17.5 |
| 32232 | 160 | 290 | 80 | 25.5 |
| 32234 | 170 | 310 | 86 | 28.5 |
| 32236 | 180 | 320 | 86 | 29.5 |
| 32238 | 190 | 340 | 92 | 36 |
| 32240 | 200 | 360 | 98 | 42.5 |
| 32244 | 220 | 400 | 108 | 60 |
| taper roller bearing 35712 – 35710 series | ||||
| Bearing | Principal Dimensions (mm) | Mass | ||
| TYPE | d(mm) | D(mm) | B(mm) | W(kg) |
| 35712 | 15 | 35 | 11 | 0.053 |
| 35713 | 17 | 40 | 12 | 0.079 |
| 35714 | 20 | 47 | 14 | 0.126 |
| 35715 | 25 | 52 | 15 | 0.154 |
| 35716 | 30 | 62 | 17.5 | 0.231 |
| 35717 | 35 | 72 | 17 | 0.331 |
| 35718 | 40 | 80 | 18 | 0.422 |
| 35719 | 45 | 85 | 19 | 0.474 |
| 35710 | 50 | 90 | 20 | 0.529 |
| 35711 | 55 | 100 | 21 | 0.713 |
| 35712 | 60 | 110 | 22 | 0.904 |
| 35713 | 65 | 120 | 23 | 1.13 |
| 35714 | 70 | 125 | 24 | 1.26 |
| 35715 | 75 | 130 | 25 | 1.36 |
| 35716 | 80 | 140 | 26 | 1.67 |
| 35717 | 85 | 150 | 31 | 2.06 |
| 35718 | 90 | 160 | 30 | 2.54 |
| 35719 | 95 | 170 | 32 | 3.04 |
| 35710 | 100 | 180 | 34 | 3.72 |
| taper roller bearing 30303 – 30330 series | ||||
| Bearing No. | Dimension(mm) | Weight | ||
| Type | d | D | B | (kg) |
| 30303 | 17 | 47 | 14 | 0.129 |
| 30304 | 20 | 52 | 15 | 0.165 |
| 303/22 | 22 | 56 | 16 | 0.208 |
| 30305 | 25 | 62 | 17 | 0.263 |
| 303/28 | 28 | 68 | 18 | 0.341 |
| 30306 | 30 | 72 | 19 | 0.387 |
| 303/32 | 32 | 75 | 20 | 0.435 |
| 30307 | 35 | 80 | 21 | 0.515 |
| 30308 | 40 | 90 | 23 | 0.747 |
| 30309 | 45 | 100 | 25 | 0.984 |
| 3571 | 50 | 110 | 27 | 1.28 |
| 3571 | 55 | 120 | 29 | 1.63 |
| 3571 | 60 | 130 | 31 | 1.99 |
| 3571 | 65 | 140 | 33 | 2.43 |
| 3571 | 70 | 150 | 35 | 2.94 |
| 3571 | 75 | 160 | 37 | 3.63 |
| 3 0571 | 80 | 170 | 39 | 4.07 |
| 3 0571 | 85 | 180 | 41 | 4.88 |
| 3 0571 | 90 | 190 | 43 | 5.65 |
| 3571 | 95 | 200 | 45 | 6.7 |
| 30320 | 100 | 215 | 47 | 8.05 |
| 30321 | 105 | 225 | 49 | 9.15 |
| 30322 | 110 | 240 | 50 | 11 |
| 30324 | 120 | 260 | 55 | 13.9 |
| 30326 | 130 | 280 | 58 | 16.6 |
| 30328 | 140 | 300 | 62 | 20.1 |
| 30330 | 150 | 320 | 65 | 24.2 |
NO 6. Our Bearing Factory:
NO 7. Our Bearing Warehouse:
Why Choose Us:
1 . We are an industrial and trading company.We have our own brand: SFNB .If you interested in our product,I can take you to visit our factory.
2 . Our factory have advanced testing equipment,before the every product leave the factory,we will be testing.We can send samples to you,you can test the quality,and if you accept the sample quality,we can promise: the follow-up orders’ quality will be the same as samples.
3 . About ordinary standard type of bearing ,We have rich inventory,not have MOQ,if your need a product is Non-standard size,need customize,we will according the product size to determine the MOQ.
4 . Our company can accept OEM,you can send sample to me,we can manufacturing products the same as sample.Meanwhile,we also can accept some well-known brands of OEM,
5 . If the amount of money is less,you can pay it by Paypal .Of course you can payment by TT or Western Union etc.
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| Rolling Body: | Roller Bearings |
|---|---|
| The Number of Rows: | Single |
| Outer Dimension: | Medium and Large(120-190mm) |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Load Direction: | Radial Bearing |
| Customization: |
Available
| Customized Request |
|---|

Can you explain the maintenance and lubrication requirements for track bearings?
Maintenance and lubrication are essential aspects of ensuring the optimal performance and longevity of track bearings. Proper maintenance practices and appropriate lubrication help minimize wear, reduce friction, prevent corrosion, and extend the service life of the bearings. Here’s an explanation of the maintenance and lubrication requirements for track bearings:
Maintenance Requirements:
- Cleanliness: It is crucial to maintain a clean operating environment for track bearings. Regularly remove dirt, dust, and debris from the track and bearing surfaces to prevent contamination, which can lead to premature wear and damage.
- Inspection: Periodically inspect the track bearings for signs of wear, damage, or misalignment. Check for excessive play, noise, or roughness during operation. If any issues are detected, take appropriate measures such as bearing replacement or realignment to ensure optimal performance.
- Tightening and Fasteners: Check the tightness of fasteners, such as bolts or screws, that secure the track bearings. Loose fasteners can lead to misalignment or instability. Ensure that all fasteners are properly tightened according to the manufacturer’s specifications.
- Track Alignment: Proper track alignment is crucial for smooth and efficient operation of track bearings. Regularly check the alignment of the track or guide rails and make necessary adjustments to maintain proper alignment, minimizing excessive loads and wear on the bearings.
- Load Limits: Adhere to the specified load limits for the track bearings. Exceeding the recommended load capacity can cause premature wear and failure. Consider the dynamic and static load ratings of the bearings to ensure they are not subjected to excessive loads that can compromise their performance.
Lubrication Requirements:
- Proper Lubricant Selection: Select the appropriate lubricant based on the operating conditions, such as temperature, load, and speed. Consult the manufacturer’s recommendations or seek expert advice to ensure the lubricant’s compatibility with the track bearings and the specific application.
- Regular Lubrication: Follow a regular lubrication schedule as recommended by the manufacturer. This may involve applying lubricant at specified intervals or based on the operating hours. Adequate lubrication helps minimize friction, reduce wear, and maintain proper functioning of the track bearings.
- Correct Lubrication Method: Apply the lubricant using the appropriate method, whether it’s manual greasing, automatic lubrication systems, or specialized lubrication techniques. Ensure that the lubricant reaches all necessary contact points and provides sufficient coverage to the bearing surfaces.
- Monitoring and Replenishment: Monitor the lubricant levels regularly and replenish as needed. In some cases, track bearings may have built-in lubrication systems that require periodic refilling or maintenance. Keep track of the lubricant condition and replace it when it becomes contaminated or degraded.
- Environmental Considerations: Consider the operating environment when selecting the lubricant. Extreme temperatures, exposure to moisture, or the presence of chemicals or contaminants may require special lubricants that can withstand these conditions and provide effective protection and lubrication.
It is important to consult the manufacturer’s guidelines and recommendations specific to the track bearings being used. Following the recommended maintenance and lubrication practices ensures optimal performance, reduces the risk of premature failure, and maximizes the overall lifespan of the track bearings.

Can track bearings withstand harsh environments or exposure to contaminants?
Track bearings are designed to operate in a wide range of environments, including harsh conditions and exposure to contaminants. However, the ability of track bearings to withstand such environments depends on their specific design, materials, and protective measures. Here’s a detailed explanation:
Many track bearings are engineered with features that enhance their resistance to harsh environments and contaminants. These features may include:
- Sealing and Shielding: Some track bearings are equipped with seals or shields that provide a physical barrier against contaminants such as dirt, dust, water, and debris. These seals or shields help prevent the entry of contaminants into the bearing’s internal components, reducing the risk of damage and premature wear.
- Corrosion Resistance: Track bearings intended for use in corrosive environments are often constructed from materials that offer high corrosion resistance. Stainless steel, for example, is commonly used due to its ability to withstand exposure to moisture, chemicals, and other corrosive substances.
- Specialized Coatings: Some track bearings may feature specialized coatings or surface treatments that provide additional protection against contaminants and harsh conditions. These coatings can enhance the bearing’s resistance to corrosion, abrasion, and chemical exposure.
- High-Temperature Capability: Certain track bearings are designed to withstand high-temperature environments. They are typically constructed using heat-resistant materials and lubricants that can maintain their structural integrity and performance even under extreme heat.
- Environmental Sealing: In applications where track bearings are exposed to extreme conditions, such as underwater or in highly dusty environments, special environmental sealing measures may be employed. These measures can include the use of advanced sealing technologies or the encapsulation of the bearings within protective housings.
While track bearings are designed to withstand harsh environments and exposure to contaminants, it is important to note that their performance and longevity can still be affected over time. Regular maintenance, including cleaning, inspection, and lubrication, is crucial to ensure proper functioning and to mitigate the impact of contaminants on the bearings.
It is recommended to consult the manufacturer’s specifications and guidelines for the track bearings being used in a specific application. Manufacturers often provide information on the environmental ratings and limits of their bearings, helping users determine the suitability of the bearings for particular harsh environments or exposure to contaminants.
By selecting track bearings with appropriate features, materials, and protection, and by implementing proper maintenance practices, it is possible to enhance the bearings’ ability to withstand harsh environments and exposure to contaminants, thereby maximizing their performance and longevity.

How do track bearings contribute to smooth and precise motion in machinery and equipment?
Track bearings play a crucial role in enabling smooth and precise motion in machinery and equipment. They provide support and guidance for moving components, allowing them to move along tracks or guide rails with minimal friction and accurate positioning. Let’s explore how track bearings contribute to smooth and precise motion:
- Reduced Friction: Track bearings are designed to minimize friction between the rolling elements (such as balls or rollers) and the raceways (inner and outer rings). By reducing friction, track bearings help to minimize energy losses, prevent excessive heat generation, and extend the lifespan of the bearing and other components in the system. Low friction enables smoother and more efficient motion, resulting in improved overall performance.
- Accuracy and Precision: Track bearings are manufactured to precise tolerances, ensuring consistent dimensions and smooth surfaces. This precision contributes to accurate and repeatable positioning of the moving components along the track or guide rail. It allows machinery and equipment to achieve the desired motion with minimal deviation or backlash, enabling precise control and operation.
- Load Distribution: Track bearings are designed to distribute loads evenly across the rolling elements and raceways. This load distribution helps prevent localized stress concentrations and ensures that the applied loads are shared by multiple contact points. By distributing the loads effectively, track bearings enhance the stability and integrity of the moving components, reducing the risk of premature wear or failure.
- Guidance and Alignment: Track bearings provide guidance and alignment for the moving components. They help maintain the desired orientation and position of the components along the track or guide rail, preventing misalignment and unwanted movements. This guidance ensures smooth and precise motion, minimizing vibrations, noise, and the risk of component damage or malfunction.
- Shock and Impact Absorption: Track bearings are designed to absorb shocks and impacts that may occur during operation. They help cushion the effects of sudden loads or vibrations, protecting the moving components and reducing the transmission of these forces to the rest of the machinery or equipment. This shock absorption capability contributes to smoother and more stable motion, enhancing overall performance and reliability.
By incorporating high-quality track bearings into machinery and equipment, engineers can achieve smooth and precise motion, improving the efficiency, accuracy, and longevity of the system. Proper selection, installation, and maintenance of track bearings are essential to ensure optimal performance and to minimize the risk of issues such as excessive wear, misalignment, or loss of motion control.


editor by CX 2024-03-29