Author Archives: Kiên Thành Tín

Tapered roller bearings used in pellet press rollers must operate under severe conditions, including high loads, elevated temperatures, and exposure to fine wood dust. Selecting the right type of bearing is essential not only for stable machine performance but also for extending equipment lifespan and minimizing downtime. This article explores key technical factors and provides guidance for choosing the right tapered bearing to optimize pelletizing efficiency.

1. Pellet Press Machines and the Role of Rollers

In wood pellet production, the pellet press is the most critical piece of equipment. It compresses raw materials such as sawdust or wood chips into cylindrical pellets with consistent hardness and size, meeting export or industrial combustion standards.

The roller in a pellet press directly compresses material into a shaping die (either ring die or flat die). Although the rollers rotate at a steady speed, they endure very high compression forces. The bearing unit within the roller assembly plays a decisive role in maintaining rotational stability, load capacity, and overall machine longevity.

2. Operating Conditions for Tapered Roller Bearings in Pellet Press Rollers

Bearings in pellet press rollers face extreme working conditions:

• Temperature: Working temperatures frequently range from 60°C to 90°C due to friction between rollers and the die.

• Dust: High concentrations of fine wood dust reduce lubrication quality and accelerate wear.

• Load: The bearings must handle both radial and axial loads due to uneven pelletizing pressure.

• Vibration: Strong vibrations from the motor, gearbox, and drive shaft affect alignment and system stability.

Kyo Bearings – Engineered for Pellet Press Load Demands

Therefore, high-strength tapered bearings with combined load resistance and rigid construction are essential.

>> Explore Kyo Bearings – Engineered for Pellet Press Load Demands 

3. Recommended Tapered Bearing Codes for Pellet Press Rollers

Below are the commonly used tapered roller bearing codes for vertical and horizontal pellet presses with capacities from 1 to 5 tons/hour:

Using symmetric tapered bearings at both ends balances the load and prevents shaft misalignment or uneven wear.

4. Tips for Selecting and Replacing Roller Bearings

To ensure optimal performance and lifespan, consider the following:

• Determine actual dynamic (C) and static (Co) load ratings based on operational conditions.

• Compare shaft speed with the bearing’s rated speed limits.

• Use heat-resistant, dust-resistant grease, such as lithium EP or calcium complex greases.

• Conduct regular maintenance, inspect for play, wear marks, and surface condition every 500–800 hours of operation.

5. Kien Thanh Tin – Distributor of Kyo Bearings for Pellet Presses

Kien Thanh Tin is an official supplier of Kyo bearings, a high-quality Korean brand designed to withstand mechanical stress in pellet production environments.

Kiên Thành Tín – Chuyên cung cấp và vòng bi công nghiệp

Why Kyo Tapered Bearings for Pellet Press Rollers?

• P6 manufacturing grade ensures concentricity, quiet operation, and vibration resistance.

• CNC-processed rollers and raceways offer high wear resistance in dusty, high-temperature settings.

• A wide product range from 30205 to 32230, compatible with various machine configurations.

Our Commitments:

• In-stock availability of Kyo bearing codes tailored for pellet presses.

• Technical support to verify specifications and select the right bearing code for your machinery.

• Nationwide delivery.

6. Conclusion

Choosing the right tapered roller bearing is critical for the stable operation of pellet press rollers, minimizing machine downtime, and enhancing continuous compression performance. With proven experience across hundreds of factories, Kien Thanh Tin confidently offers Kyo bearing solutions backed by real-world results.

• Technical Support: 088 886 18 00
• Website: https://kienthanhtin.com

 

1. What is a Cylindrical Roller Bearing?

A cylindrical roller bearing is an industrial bearing that uses cylindrical rollers instead of balls to support loads. This design allows for higher radial load capacity, reduced friction, and extended service life under heavy-load conditions.

1.1. Structure of Cylindrical Roller Bearings

A cylindrical roller bearing typically consists of the following main components:

Structure of Cylindrical Roller Bearings

• Inner and Outer Rings: Hold the rollers in place and guide rotational movement.

• Cylindrical Rollers: Precision rollers that distribute radial loads evenly.

• Ribs: Guide the rollers and support axial loads when applicable.

• Cage: Made of steel, brass, or polyamide; helps retain rollers in position and reduce friction.

1.2. Applications of Cylindrical Roller Bearings

These bearings are widely used in industries requiring high load capacity and high-speed rotation, such as:

• Machinery manufacturing: Gearboxes, industrial motors, CNC spindles

• Steel and cement industries: Kilns, presses, and heavy-duty conveyors

• Power generation: Wind turbines, industrial compressors

• Mining: Crushers, vibrating screens, and large conveyor systems

Cylindrical roller bearings used in rice husk pellet machines.

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2. Types of Cylindrical Roller Bearings

There are various cylindrical roller bearing types, each designed for specific applications. Common types include:

2.1. Single Row Cylindrical Roller Bearings

• Simple structure with one row of rollers

• High radial load capacity and high-speed capability

• Common designations: NU, NJ, N, NUP

• Examples: NU2205, NJ2310

2.2. Double Row Cylindrical Roller Bearings

• Two rows of rollers for increased load capacity

• Suitable for heavy-duty machinery such as large motors and industrial gearboxes

• Common designations: NN, NNU

2.3. Full Complement Cylindrical Roller Bearings

• No cage; rollers are directly loaded into the bearing, allowing for higher load capacity

• Common designations: SL01, SL02, SL04

2.4. Self-Aligning Cylindrical Roller Bearings

• Can accommodate minor shaft misalignments

• Used in steel mills and heavy-duty pressing machines

3. How to Accurately Measure Cylindrical Roller Bearings

To replace cylindrical roller bearings with the correct size, measure the following key parameters:

3.1. Key Dimensions

• Inner Diameter (d): The bore that fits the shaft

• Outer Diameter (D): The outer circle that fits the housing

• Width (B): Total thickness of the bearing

• Chamfer Dimension (rmin): Important when installing in rounded or grooved corners

3.2. Measuring Tools

• Vernier Caliper: For measuring inner/outer diameters and width

• Feeler Gauge: To check clearance between bearing and shaft

• Runout Tester: To inspect the bearing’s roundness and rotational precision

3.3. Step-by-Step Measuring Instructions

Cách đo kích thước vòng bi chính xác

Step 1: Prepare the bearing

• Clean the bearing using a soft cloth and specialized cleaning solution

• Place it on a flat, stable surface to avoid vibration during measurement

Step 2: Measure the inner diameter (d)

• Use a caliper to measure at three different points on the inner ring

• Take the average if variations are detected

Step 3: Measure the outer diameter (D)

• Measure across the outer edge at three positions

• If worn or deformed, use a dial gauge for higher precision

Step 4: Measure the bearing width (B)

• Position the caliper perpendicular to the bearing surface

• Take measurements at different points and calculate the average

Step 5: Check radial runout (if required)

• Mount the bearing onto a shaft and rotate slowly

• Use a dial indicator to detect any abnormal runout

• If runout exceeds limits, replace the bearing

4. Where to Buy Genuine Cylindrical Roller Bearings?

Kien Thanh Tin is a leading distributor of genuine industrial bearings in Vietnam, especially for factories needing bulk quantities. With years of experience, we are committed to supplying high-quality, authentic bearings at competitive prices.

• KTT Store – Genuine Bearings and Belts
• Hotline: 088 886 18 00
• Store: store.kienthanhtin.com
• Address: 66 An Duong Vuong, An Lac A, Binh Tan, HCMC
• Website: https://kienthanhtin.com

How to calculate the diameter of Win – Kyo bearings

• For bearings with two ending digits from 04 or higher, multiply the last two digits by 5. Example: Bearing 6204 → inner diameter = 04 × 5 = 20 (mm)
• For bearings with ending digits less than 04, the inner diameter is as follows: 00 = 10 (mm), 01 = 12 (mm), 02 = 15 (mm), 03 = 17 (mm)

Specification Table of Common Bearings – Win & Kyo (Ball Bearings)

Click here to download the full specifications table for bearings.

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Bearings are essential components in machinery, playing a crucial role in reducing friction and improving work efficiency. Currently, there are many bearing brands in the market, which makes it difficult for users to choose the right one. This article will introduce the top 10 most popular bearing brands today to help you make an informed decision.

1. Win

Win is a quality brand from Taiwan, known for its good products at highly competitive prices, making it suitable for industries that require frequent bearing replacements.

• Win products are manufactured to international standards and are suitable for various industrial sectors.
• The brand has been specially researched to be compatible with the climate in Vietnam.
• Although it has millions of users in the agriculture sector, Win still lacks high recognition in Vietnam’s industrial sector.

Win brand is a Taiwanese-quality brand.

2. Kyo:

Kyo is a high-quality brand from South Korea, specializing in producing premium bearings at optimal prices, particularly suitable for harsh industrial sectors that require frequent bearing replacements.

• Compared to other brands, Kyo’s product prices are quite competitive, helping to optimize operational costs.
• Kyo bearings have a relatively long lifespan, meeting the demands of various industries, such as wood pellet manufacturing, precision machining, industrial sewing machines, etc.
• However, compared to older brands, the Kyo brand is not yet widely recognized in the industrial sector.

The Kyo brand is of South Korean quality.

3. NTN:

NTN is a brand from Japan, specializing in the production of bearings with extensive experience and expertise in this field.

• NTN products have stable quality, with experts evaluating them accurately down to the micrometer, meeting the requirements of many customers.
• NTN is particularly suitable for the industrial and automotive sectors
• NTN offers a wide range of models for almost all industries.
• Compared to SKF and NSK, NTN’s product prices are generally more competitive.

TThe NTN brand is of Japanese quality.

4. NACHI:

NACHI is a Japanese brand under FUJIO, known for its high product quality and durability.

• It offers a full range of bearings for various applications.
• NACHI is widely recognized around the world with over 48 branches.

The Nachi brand is of Japanese quality.

5. SKF:

SKF is one of the largest and oldest bearing manufacturers in the world, based in Sweden, with advanced manufacturing technology and a strict quality control system.

• It offers a full range of bearings for all applications, from heavy industry to electronic devices.
• SKF bearings have a long lifespan, can withstand heavy loads, operate in harsh environments, and meet high precision requirements.
• Due to its quality and renowned brand, SKF products are generally priced higher compared to other brands.

The SKF brand is of Swedish quality

6. NSK:

NSK is one of the famous bearing brands known for its Japanese quality and advanced manufacturing technology. NSK products are widely used in many industries due to their high performance and durability.

• NSK is renowned for its high product quality, precision, and reliability.
• By applying advanced manufacturing technology, it produces high-performance products.
• Similar to SKF, the product prices of NSK are also relatively high.

Thương hiệu NSK chất lượng Nhật Bản

7. FAG:

FAG is a German brand, known for its high product quality and precision.

• FAG offers a full range of bearings for various applications, from heavy industrial equipment to everyday household devices.
• FAG bearings have a long lifespan, can withstand heavy loads, and operate in harsh environments.
• Similar to other European brands, the product prices of FAG are relatively high.

The FAG brand is of German quality

8. TIMKEN:

TIMKEN (USA) is renowned for its heavy-duty bearings, widely used in heavy industries.

• By applying advanced manufacturing technology, it produces high-performance products.
• Timken currently has a vast production network across 27 countries with over 66 factories.
• The products mainly focus on heavy-duty bearings: The product range is not as extensive as other brands.

The Timken brand is of American quality

9. INA:

INA, a renowned German brand, is famous for its high-precision bearings, used in applications that require high accuracy.

• INA products are manufactured using modern German technology, meeting the stringent requirements of the industry.
• Similar to other European brands, the product prices of INA are relatively high.

The INA brand is of German quality

10. KG:

KG bearings are the result of a collaboration between Indian and Japanese experts. The main factory of KG is located in India, with technological support from the NACHI-Fujikoshi Group of Japan.

• These products are manufactured under strict quality control.
• They ensure high reliability and are widely distributed to over 50 countries worldwide

Kien Thanh Tin – A trusted distributor of bearings for industrial factories

Kien Thanh Tin is one of the leading and most reputable bearing distributors in Vietnam, especially for industrial factories with large volume requirements. With many years of experience in the industry, we are committed to providing genuine, high-quality bearings at competitive prices.

KTT Store – Genuine Bearings and Belts

• Hotline: 088 886 18 00
• Store: store.kienthanhtin.com/
• Address: 66 An Duong Vuong, An Lac A Ward, Binh Tan District, Ho Chi Minh City
• Website: https://kienthanhtin.com/

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Over the past 13 years, we have distributed brands such as Win, Kyo, NTN, Taka bearings to over 400 partners nationwide. Contact us now to cooperate with us. Your personal information will be fully protected by us.