Tapered roller bearings
Dimension series: 320 series, 329 series, 330 series, 302 series, 303 series, 313 series, 322 series, 323 series (metric series); LM series, HM series (imperial series)
Keywords:
Tapered roller bearings
Series:
Product Details
Zhengzhou Sinomach Precision Industry Development Co., Ltd. is a professional tapered roller bearings manufacturer, providing reliable bearing solutions for load-bearing applications with combined radial and axial loads.
We supply a full range of tapered roller bearings dimension series, including 320, 329, 330, 302, 303, 313, 322, 323 metric series as well as LM, HM imperial series. Various types are available: single row, matched, double-row and four-row tapered roller bearings, all featuring separable structure for easy assembly and disassembly.
Our products are manufactured with strict quality control and certified by ISO9001, AS9100, IATF16949 quality systems. We boast strong R&D and manufacturing capacity, providing comprehensive technological solutions for bearing selection, design, materials, inspecting, testing and process equipment.
Send us your application details to get a professional technical proposal.
Specification | Details |
|---|---|
Bearing Types | Single row, Matched, Double-row and Four-row Tapered Roller Bearings |
Dimension Series | Metric series, Imperial series |
Material of Bearing Material | Chrome steel, Stainless steel |
Certificate | ISO9001, AS9100, IATF16949 |
Accuracy Grade | P0/P6/P5/P4/P2 |
Application | Automobile, Rolling Mill, Mine, Metallurgy, Gearboxes, Hoisting equipment, Machine tools, Textiles, Railways, Chemicals, Electronics, etc. |
Lubrication | Grease or Lubricating Oil |
Introduction of tapered roller bearings
Tapered roller bearings are mainly suitable for bearing combined radial and axial loads, with radial loads being dominant. Large tapered roller bearings can be used to bear combined radial and axial loads, with axial loads being dominant. Tapered roller bearings are separable bearings; their inner ring assembly (with tapered rollers and cage) and outer ring can be installed separately, making assembly and disassembly convenient.
Types of tapered roller bearings
1. Single row tapered roller bearings
The main structure of single-row tapered roller bearings is type 30000. This type of bearing can limit the axial displacement of the shaft or housing in one direction and withstand axial loads in one direction. Single-row tapered roller bearings generate additional axial force under radial load. Therefore, in general, the outer and inner rings of the bearing are installed with their corresponding end faces facing each other in two supports of the shaft. If used alone, the external axial force must be greater than the additional axial force. The 313 series tapered roller bearings have a relatively large contact angle (27°~30°) and can withstand large axial loads. Other series of tapered roller bearings have contact angles between 10° and 18°.
2. Matched Tapered Roller Bearings
Single row tapered roller bearings can be matched face-to-face, back-to-back or in tandem to deliver specific advantages depending on operating conditions.
3. Double-row tapered roller bearings
Double-row tapered roller bearings consist of a single outer ring with two raceways and two inner rings, separated by a spacer. By adjusting the thickness of the spacer, the bearing's internal clearance can be precisely controlled. Double row tapered roller bearings are capable of supporting both radial loads and axial loads in both directions simultaneously. Within the axial clearance range of the bearing, they can also limit the bidirectional axial displacement of the shaft or housing.
Double-row tapered roller bearings are commonly used in gearboxes, hoisting equipment, rolling mills, and machinery in the mining industry.
4. Four-row tapered roller bearings
Four-row tapered roller bearings consist of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings. Spacers are arranged between both the inner and outer rings to allow for the adjustment of bearing clearance. Four row tapered roller bearings share similar performance characteristics with double-row tapered roller bearings, offering the capability to support heavy radial loads. However, they operate at relatively lower limiting speeds. Four-row tapered roller bearings are primarily used in heavy-duty machinery, such as rolling mills.
R&D and Manufacturing capacity
⇢ One R&D centre and three industrial bases
⇢ Advanced bearing manufacturing equipment
⇢ With more than 380 engineering technicians in various disciplines related to bearings, we maintain advantages in bearing design, basic theory research, lubrication technology, metallic and non-metallic materials, testing and inspection, and industrial standards, etc., and provides bearings and related enterprises with comprehensive technological solutions, including bearing selection, design, materials, inspecting, testing, and process equipment.
Quality Control
Our products and services have been certified by ISO9001, AS9100, IATF16949 and other quality systems.
Our company also relies on the National Bearing Quality Supervision and Inspection Centre to carry out strict factory inspection on all products to guarantee product quality.
Features & Benefits of taper roller bearings
⇢ Modular and Interchangeable Components for Easy Installation and Maintenance
All parts of tapered roller bearings are designed to be separable and interchangeable, significantly simplifying installation, disassembly, and routine maintenance.
⇢ Enhanced Operational Reliability
Optimized design and material selection ensure stable and reliable performance under various operating conditions.
⇢ Extended Service Life
Manufactured with high-quality materials and advanced processes to deliver a longer lifespan and reduce replacement frequency and maintenance costs.
⇢ Low Friction, Noise, and Vibration
Precisely engineered components minimize friction, resulting in significantly reduced noise and vibration during operation, enhancing overall bearing performance and user comfort.
Applications of taper roller bearing:
Tapered roller bearings are widely used in heavy-duty and precision machinery, capable of supporting combined radial and axial loads in demanding working conditions.
1. Automotive Industry
Ideal for wheel hubs, transmissions, differentials, and chassis components, providing stable rotation and long service life under continuous load.
2. Rolling Mills & Metallurgy
Suitable for rolling mills, continuous casting equipment, and heavy metallurgical machinery, with excellent resistance to shock loads and extreme working conditions.
3. Mining Equipment
Widely applied in crushers, conveyors, drilling machines, and mining gearboxes, delivering high durability and reliability in harsh environments.
4. Gearboxes & Reducers
Used in various industrial gearboxes and speed reducers to ensure stable torque transmission and low noise operation.
5. Hoisting & Lifting Equipment
Perfect for cranes, winches, elevators, and hoisting mechanisms, supporting heavy vertical and radial loads safely and steadily.
6. Machine Tools
Applied in precision machine tools, spindles to maintain high rigidity, accuracy, and smooth operation.
7. Railway Industry
Used in railway axlebox, gearbox, and traction motor, meeting the requirements of heavy load, high reliability, and long service life.
They are also widely used in textiles, chemicals, electronics, and other general industrial equipment, providing consistent performance across multiple fields.
Technical articles
FAQ 1: What are the key installation and maintenance considerations for tapered roller bearings?
Answer:
Correct installation and maintenance are essential to achieving maximum service life and performance from tapered roller bearings.
Installation considerations:
Ensure correct fit tolerances between the shaft, housing, and bearing rings.
Apply appropriate preload or endplay adjustment, especially in paired configurations. Improper preload can lead to overheating or premature failure.
Use proper mounting tools to prevent damage to raceways or rollers.
Verify alignment to avoid uneven load distribution.
Maintenance best practices:
Select the appropriate lubrication method (grease or oil) based on speed, load, and operating temperature.
Maintain proper lubrication intervals to prevent metal-to-metal contact and surface fatigue.
Protect against contamination using effective sealing systems.
Monitor for abnormal noise, vibration, or temperature increases.
By following proper installation and maintenance procedures, tapered roller bearings can deliver long service life, reduced downtime, and stable performance in demanding industrial and automotive applications.
FAQ 2: How Do Single Row and Double Row Tapered Roller Bearings Differ?
Answer:
The primary difference between single row tapered roller bearings and double row tapered roller bearings lies in load direction capacity and mounting arrangement.
Single Row Tapered Roller Bearings
Support radial loads and axial loads in one direction only
Typically installed in matched pairs (back-to-back or face-to-face)
Allow adjustable internal clearance or preload
Common in automotive wheel hubs and industrial gearboxes
Double Row Tapered Roller Bearings
Support axial loads in both directions
Offer higher rigidity and load capacity
Simplify installation by reducing the need for matched pairs
Suitable for heavy-duty applications such as rolling mills and industrial transmissions
Selecting the correct configuration ensures optimal load distribution, longer bearing service life, and improved operational reliability.
FAQ 3: What Factors Should Be Considered When Selecting a Tapered Roller Bearing?
Answer:
Proper tapered roller bearing selection is critical for maximizing performance and reducing premature failure. Key factors include:
1. Load Requirements
Determine the magnitude of radial and axial (thrust) loads. Tapered roller bearings are ideal for applications with significant combined loading.
2. Speed Requirements
Higher speeds require optimized lubrication and proper preload control to prevent excessive heat generation.
3. Contact Angle
A larger contact angle increases axial load capacity but may influence speed capability.
4. Bearing Arrangement
Decide whether a single row, matched pair, or double row tapered roller bearing is most suitable for the application.
5. Lubrication Method
Choose between grease or oil lubrication depending on operating temperature, load, and speed conditions.
6. Operating Environment
Consider contamination, vibration, humidity, and temperature. Proper sealing solutions are essential in harsh environments.
Get Technical Support & Quotation
Looking for a reliable thin section bearing manufacturer for your project?
Send us your drawings, load conditions, or application details — our engineers will provide a suitable solution.
👉 Request a Quote | Get Technical Support
Email: info@zys.com.cn
Mob/Wechat/Whatsapp: +86-15837918900
Series Related Products
Angular contact ball bearings have a high limit speed and can bear radial loads and axial loads at the same time, as well as pure axial loads.
High Load Slewing Bearings for Wind Power, Cranes & Heavy Equipment
Zhengzhou Sinomach Precision Industry Development Co., Ltd. is a professional slewing bearing (turntable bearing) manufacturer, providing reliable bearing solutions for heavy-duty and low-speed rotation applications.
The Agri Hub Bearing is a fully integrated wheel hub bearing system that is lubricated and sealed for life.
300XDJ05G50 Milling Spindles/motorized spindle with discount
The XDJ series milling spindles have the functions of automatic broach release, precise control of speed and accurate stop. They can process high-speed milling and engraving, thus they are widely used in the processing of conventional parts, tools, molds and wood workpieces.
Thin section bearings, are a specially designed bearing, which is characterized by thin inner and outer ring wall thickness, small cross-sectional dimensions, light weight, and high rigidity and load-bearing capacity.
Our company has accumulated rich experience in the design, performance regulation and processing of cages of various materials.
Our company is a professional manufacturing company integrating the research and development, production and sales of bearing rings.
The company can provide a full range of silicon nitride ceramic balls and zirconium oxide ceramic balls for bearings with specifications ranging from Φ0.8mm to Φ31.5mm.
High speed spindles for rotation-rolling
High speed spindles for rotation-rolling have LD series and they are widely used for machining internal thread copper tubes for heat exchange of air conditioning equipment.
Rolling linear guides are composed of guide rails, sliders, steel balls, return devices, cages, sealing devices, etc.
The ball screw pair is a mechanical element composed of a screw, a nut, a ball and other parts. Its function is to convert rotational motion into linear motion or convert linear motion into rotational motion.
Mechanical spindles include XP, XPJ, CPJ and other series, with belt drive and direct connection modes.
The milling spindles have XD, XDS and XDJ series. They have the functions of automatic broach release, precise control of speed and accurate stop.
The grinding spindles have MD, MDF, MDT, MDS, MDK series. Grinding spindles have the characteristics of high precision, high speed, high power and high rigidity.
Bearing radial clearance measuring instrument X095JC/X092JC/X093JC
The radial clearance of rolling bearings is one of the important quality indicators of bearings and an important factor affecting the vibration, noise and life of bearings.
Testing machine (material field)
Major customers are lubricant oil and grease manufacturers and the steel industry.
Testing machine (automotive industry)
Covering automobile engine rocker arms, automobile wheel hub units, clutch brake unit bearings.
Testing machine (bearing industry)
Covering all types and sizes of bearings. The main customers are domestic and foreign bearing manufacturers.
Testing machine (railway field)
Covers rail transit traction motor bearings, full suspension bearings, axle box bearings, and gearbox bearings.
Testing machine (wind power field)
Covering wind turbine main engine yaw and pitch bearings, main shaft bearings, gearbox bearings, and generator bearings.
Our company can provide cold rolling processing line, bearing ring grinding line, cold rolling machine, roller superfinishing machine, groove superfinishing machine, grinding machine, non-standard grinders and other products.
High Load Slewing Bearings for Wind Power, Cranes & Heavy Equipment
Zhengzhou Sinomach Precision Industry Development Co., Ltd. is a professional slewing bearing (turntable bearing) manufacturer, providing reliable bearing solutions for heavy-duty and low-speed rotation applications. We support standard models and fully customized slewing bearings, manufactured according to drawings, load calculations, and application requirements. Large diameter slewing bearings up to 11mm External gear / internal gear / gearless options OEM & project-based supply ISO / DIN / EN compliant manufacturing Send us your drawings or application details to get a technical proposal.
The internal structure of the cross roller bearing adopts rollers arranged perpendicularly at 90 degrees to each other.
We can offer YRT series, YRTS series, ZKLDF series, YRTM series, YRTSM series rotary table bearings.
Share your needs with us and get an impressive collaboration and reassuring product.
Headquarter: East Wing Building, No. 121 Wutong Street, High-Tech Industrial Development Zone, Zhengzhou City, Henan Province, China
No. 1 Factory Address: No. 6 Fenghua Road, Luoyang City, Henan Province, China
No. 2 Factory Address: No. 1 Sanxi Road, Science and Technology Industrial Park, Jianxi District, Luoyang City, Henan Province, China
No. 3 Factory Address: Yibin Industrial Technology Park, Yibin District, Luoyang City, Henan Province, China
