Material

Wholesale Bearing Material Supplier

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Professional Manufacturing

Lianyi Bearing is a manufacturer and exporter of a full range of tapered roller bearings, deep groove ball bearings and housed ball bearings. There are more than 300 employees, including engineering and technical personnel, and the factory building area is 30,000 square meters.

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R&D and Patents
Currently, there are 40 R&D engineers in the R&D department, including more than 20 with master's degree or above. We own more than 30 patents and software copyrights, and have developed one of the most comprehensive sliding bearing R&D systems in the world.

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Quality Control
We use advanced automated production lines and testing lines for tapered rollers, deep groove ball bearings, and seated ball bearings. We strictly adhere to the ISO 9001 quality management system to provide you with high-quality and reliable products.

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Solution Provider
We provide solutions based on your requirements, specified materials and product structures are available, and will provide a complete DFMEA for the product as soon as possible for subsequent production. And our proprietary materials are competitively priced.

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Uhmwpe Based Composite Material

●LIANYI independent research and development, design and production. ●Personalize various types of product types. ●High tensile&impact strength

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Filament Winding Material

●High strength and high modulus. ●Light weight. ●Excellent shock and edge load resistance

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Laminated Composites Material

●Abrasion resistance. ●Excellent vibration absorption. ●Excellent corrosion resistance

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Pps Based Composite Material

●LIANYI independent research and development, design and production. ●Personalize various types of product types. ●High wear resistance

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Peek Based Material

●Lianyi independent research and development, design and production. ●Personalize various types of product types. ●Excellent chemical resistance

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Ptfe Based Composite Material

As the most widely used fluoropolymer, PTFE is the most chemically corroded plastic, with the best dielectric properties and a wide operating temperature range.

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Fabric Composite Material

●Low friction coefficient. ●Good wear resistance. ●Excellent vibration absorption

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Nylon Based Composite Material

●Lianyi independent research and development, design and production. ●Personalize various types of product types. ●excellent for water-lubricating

Product Categories

Products Description

Specifications	Available Options
Bearing Types	Permanent Self-Lubricated Greaseless Oil Less Maintenance Free Self-aligning
Applications	Medium-to-Heavy Loads Slow-to-Medium Speeds
Environment	Wet Dry High Temperature Low Temperature Hostile Irradiated or Radiation Environment
Configurations	One-Piece Bushings Split Bushings Two-Piece Bushings Flanged Bushings Self-Aligning Spherical Bushing Thrust and Expansion Washers Liners Flat Plates Radialube® Spherilube® Plates Special Shapes
Peripheral Parts	Support Systems Structural Components Mating Pins Shafts Housings
Manufacturing Process	CNC Machining Welding Painting
Lubricant Form	Dry Solid Permanent Self-Lubricating

Common Materials Used in Bearings

1.Metallic Materials
a.Chrome Steel SAE 52100
Roller, ball and tapered roller bearings are usually made of chrome SAE 52100 bearing steel. This material has excellent wear resistant capacity and a Rockwell hardness of about 64 HRC. Bearings made of chrome steel can function at temperatures up to 120°C, and upon heat treatment, they can even go as high as 220°C. However, one disadvantage of chrome steel bearings is the low chromium content that makes them prone to corrosion.

b.Stainless Steel AISI 440C
Stainless steel bearings have a higher chromium content (up to 18%) that makes them superior to SAE 52100 in terms of corrosion resistance. They can function at temperatures as high as 250°C but are low in hardness and overall load-carrying capacity, in addition to having a higher production cost. AISI 440C is a high-carbon stainless steel used in rolling-contact bearings (ball or roller bearings).

c.Martensitic Stainless Steel SV30
Martensitic stainless steel can be modified during the processing of the raw steel by lowering the carbon content and introducing nitrogen as an alloying element. The nitrogen increases the saturation of the chromium, which transforms into chromium nitrides instead of chromium carbides. The result is a high strength, high hardness steel with a superior microstructure that extends fatigue life by as much as 100% (double) in certain applications.

2.Non-metallic Materials
a.Nylon
Nylon is a polyamide, a crystalline material widely used in bearing materials as a sintered layer inside a metal sleeve or an injection-moulded sleeve. It has excellent toughness, wear characteristics, and fatigue and chemical resistance. Nylon filled with MoS2 in particular is enhanced with lubricating properties and are well-suited for bearings.

b.Phenolic Materials
Phenolic materials are usually used for cages of high-speed ball bearings such as in machine tool equipment spindles. They are good resistors to water, acidic, and alkali solutions. However, they have a low thermal conductivity and they tend to expand, which render them less desirable in high load-speed applications.

c.Nitrile Rubber
Buna or nitrile rubber is one of the most common bearing seal materials. It is resistant to many chemicals and can be used in a wide temperature range. It also has good mechanical properties and is cheap to produce. Bearing seals can also be made of silicone and viton.

d.Teflon
Polytetrafluoroethylene (PTFE), commonly known as Teflon, is a thermoplastic polymer material whose high chemical inertness, self-lubricating property, and low friction coefficient makes it a suitable material for rolling-element bearing cages, journal, and sliding bearings, among others.

Lianyi Bearing independently developed self-lubricating and water-lubricated bearing materials, eliminating the need to frequently add lubricating oil to the bearings. This saves lubricating oil consumption, reduces machine downtime and maintenance costs, and is environmentally friendly. Let me recommend some high-quality bearing manufacturing materials to you!

What is Peek Based Material

PEEK (polyetheretherketone) is semicrystalline thermoplastic known for retaining its functionality at high temperatures and in challenging environments. This includes aspects such as strength, wear resistance, dimensional and structural stability, and chemical inertness. These factors alone have convinced many engineers to switch from traditional bearing materials to PEEK.

Characteristics of Peek As a Bearing Material

Efficiency

PEEK is lightweight and strong, giving it a high strength-to-weight ratio. This means that a metal bearing would weigh significantly more than its equivalent PEEK counterpart. This not only reduces overall weight, but also the inertia of the system, which in turn can increase efficiency.

Hydrostatic And Hydrodynamic Bearings - Peek Composite

Reinforcement

By reinforcing PEEK with carbon fibers, its load bearing capacity and dimensional stability are increased. The carbon fibers will increase PEEKs ability to dissipate heat, reducing the chances of thermal expansion. Such characteristics are vital for bearings in high performance applications, where a slight change in bearing geometry could result in a system failure.

Lubrication

Plain PEEK has a low coefficient of friction. By adding graphite and PTFE filler, friction can be further reduced. The ability to add such fillers to PEEK can result in self-lubricating bearings with increased wear resistance.

Deep Groove Ball Bearings with Solid Oil

Manufacture

PEEK is compatible with various manufacturing processes, with bearings typically produced using machining and injection molding. Both modern CNC machining and injection molding support the efficient manufacture of high precision, complex parts such as bearings.

PEEK Bearing Advantages

The application of engineered polymer on tilt pad thrust and journal bearings provides a number of application benefits.

Operation with thinner hydrodynamic films for:

High load capacity - up to 10 MPa (1500 psi)
Reduced power loss - up to 30% savings
Operation with low-viscosity lubricants
Higher temperature capabilities - up to 250°C (482°F)
Operation with challenging lubricants and process fluids
Higher start-up load capability without hydrostatic lift
Corrosion resistance
Electrical insulation to prevent damaging currents from passing through the bearing and housing to ground
Embedability similar to that of babbitt

Popular Application of Polyetheretherketone (PEEK)

Automotive

With the growing trend of miniatured engine compartments, PEEK offers a solution to replace metals and offer weight reduction, noise reduction and functional integration. The most important performance benefits of Polyetheretherketone are enhanced dry and lubricated surface interaction, outstanding mechanical performance over a wide temperature range, ease of processing and excellent fatigue properties.

Aerospace

PEEK polymers and its composites are replacing aluminum and other metals in several aircraft parts. Huge numbers of large volume components with fine tolerances can be cost-effectively formed and used without assembly or modification.

Medical and Healthcare

Polyetheretherketone provides cost-effective, innovative parts with excellent wear, heat, electrical and chemical resistance. Its applications in healthcare mainly consist of dental instruments, endoscopes and dialyzers.

Electrical/Electronic

Polyetheretherketone possesses excellent electrical properties, which makes it an ideal electrical insulator. Some interesting examples of current applications include coaxial connector jacks used in hands-free telephone kits, surface-mounted trimming potentiometers, which are electro-mechanical devices, known as SMDs, designed to correct voltage or resistance errors in printed circuit boards, and as insulators for connector pins on under-sea environment control equipment.

Filament Winding Material for Bearings

To meet the need for high load, self-lubricating bearings that provide low wear rates, we developed our line of Fiber Reinforced Composite bearings. Combining the excellent lubricating properties of filled PTFE (polytetrafluoroethylene) with the high strength and stability of epoxy-impregnated, wound glass fibers, this tough, high strength line of bearings provide the radial and axial strength required to support high bearing loads.

Benefits of a Filament Wound Bearing

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Element Of Elasticity
Filament wound bearings present a good level of elasticity that falls between rigid metals and soft plastics. This modulus gives the bearing surface the ability to support heavy loads, but enough flexibility to tolerate shaft misalignment without stressing the bearings ends.

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Shock Absorption
A composite filament wall acts like a spring to absorb shock and vibration in high-stress environments. Even our thin wall CJ’s have the ability to compress and recover during shock and impact conditions without failure.

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Resistance to Corrosion
The special winding technique and multilayer construction gives filament bearings good resistance to chemical, galvanic (electrochemical contact) and fretting corrosion. These are all primary causes of bearing failure. Explore more causes of bearing failure.

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Versatile Motions
Filament wound CJ’s and FCJ’s are best applied in oscillating motions at variable frequencies but can also be utilized in lubrication free rotary and lineal motions.

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Good Service Lifetime
A filament wound composite is best used against a hard shaft and 8-16 rms finish to resist abrasion and fretting and improve overall service. In fact, one test showed that improving the surface of 50-55 Rc hardness and an 8 rms finish could extend the wear life of a bearing from 500,000 cycles to over 1 million cycles. All without lubrication.

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Self-Lubricating Qualities
Composite bearings run dry and grease-free to help you save on all costs associated with manual grease application.

Applications of Filament Winding Material

Laboratory and field testing have proven that Fiber Reinforced Composite bearings provide outstanding performance in a wide variety of demanding dry or lubricated bearing applications such as:

Aerial lifts GGB
Aerospace and space applications
Agricultural equipment
Construction equipment
Material handling equipment
Processing equipment
Railroad applications
Snowmobile and ATV CVT clutches GGB
Waste and recycling equipment
Water turbines
Wind turbines

Filament Winding Process

Continuous fiber tows are fed through a fiber delivery system to the filament winding machine, where they are wound onto a mandrel in a predetermined, repeating geometric pattern. The tow location is guided by a fiber delivery head, which is attached to a movable carriage on the filament winding machine. The relative angle of the tow to the mandrel axis, called the winding angle, can be tailored to provide strength and stiffness in the desired directions. When sufficient layers of tow have been applied, the resulting laminate is cured on the mandrel. The overall size and shape of the finished part are determined by the mandrel shape and thickness of the laminate.

The winding angles will determine the mechanical properties of the composite part, such as strength, stiffness, and weight. The density of the laminate is the result of the tension of the tows during winding. The composite parts made through these methods generally have good strength-to-weight properties.

Innovation Patents

LIANYI Bearing owns more than 30 patents and software copyrights. Our independently developed self-lubricating and water-lubricating materials are unique and have the advantages of oil-free, maintenance-free and low-cost.

Frequently Asked Questions

Q: Which material is used in bearing?

A: The most common material used to produce the load carrying components in precision ball bearings, roller bearings, and tapered roller bearings is 52100 chrome steel. These components are the bearings inner and outer rings, balls and rollers.

Q: What is the best metal for bearings?

A: The most popular material is a chrome steel with about 1% carbon and 1.5% chrome. Martensitic chrome steel is very well-suited to ball bearing production. The properties of this material ensure stability, they are resistant and durable in continuous operation, all key elements required for these balls.

Q: What is bearing steel material?

A: AISI 52100 bearing steel is a high carbon, chromium containing low alloy through hardening steel. This steel has high hardness (up to HRC 67), high wear resistance (due to its high hardness), and rolling fatigue strength, which makes it specially adapted for roll bearings.

Q: What makes a good bearing material?

A: Bearing materials are chosen on the basis of dimensional stability, resistance to corrosion and resistance to damage or wear occurring when accidentally applied loads are sufficiently high to cause the bearing surfaces to contact.

Q: How do I choose bearing material?

A: How to choose the right bearing for your application:

Find the Bearing Load & Load Capacity. First, know the type and amount of bearing load that your application will place on the bearing.
Know the Rotational Speed of Your Application.
Factor in Bearing Runout & Rigidity.
Find the Right Lubrication for Your Bearings Needs.

Q: What is the best material for bearing housing?

A: Housing material. Roller bearing units, housings with bearings, and split bearing units typically use grey cast iron. There are several housings for rolling bearings that can be made of spheroidal graphite cast iron or cast steel.

Q: What is bearing quality steel?

A: BEARING QUALITY refers to manufacturing restrictions that are employed, when the mill makes the steel. It is commonly referred to as “Clean Steel Production”. The processing refines the steel, removing non-metallic inclusions and generally improving the quality and core integrity of the steel.

Q: What is the strongest type of bearing?

A: Cylindrical roller bearings. These use cylindrical rollers as their rolling elements. Cylindrical roller bearings can support an even greater radial load than deep groove ball bearings, and are used in machinery where they will experience strong impacts.

Q: Which is the most commonly used bearing material?

A: Bearings made of chrome steel - SAE 52100. The most common material used to produce the load-carrying components in precision ball bearings, roller bearings, and tapered roller bearings is 52100 chrome steel. These components are the bearings' inner and outer rings, balls, and rollers.

Q: Which alloy steel is widely used for bearings?

A: Carbon steel (or high carbon chrome steel) is the most commonly used material for bearings. It has slightly better low noise characteristics than stainless steel. In addition, its hardness means it has better load capacity than stainless steel bearings.

Q: What grade of steel are bearings made of?

A: Chrome steel (SAE 52100) is the most common material used to manufacture precision ball bearings, roller bearings, and tapered roller bearings. Specifically, it is used to make the load-carrying components of bearings such as inner and outer rings, balls and rollers.

Q: Are stainless steel bearings better than chrome steel?

A: Chrome steel is the standard steel used for most ball bearings as it is harder than stainless steel and gives greater life ratings. For applications that require low noise, it is favoured 440 grade stainless steel for its superior low noise qualities.

Q: What type of bearing lasts the longest?

A: Based on longevity, ceramic ball bearings may last up to ten times as much as steel bearings would in the same motor. Compared to steel bearings, ceramic balls are less prone to expansions and vibrations.

Q: Is stainless steel a good bearing material?

A: Since a bearing will spend most of its life in an oil bath or grease, the material must resist corrosion. This is why stainless steel is often used in these applications because it has a high resistance to corrosion and oxidation.

Q: What is better ceramic or steel bearings?

A: Stainless steel bearings and full ceramic bearings are both corrosion resistant but the ceramic bearings have greater corrosion resistance. They will both also cope with higher temperatures than chrome steel but ceramic bearings also win here. Stainless steel bearings win the prize for load and speed ratings.

Q: What is the composition of bearing material?

A: Most ball bearings are made of a type of steel known as high carbon chromium steel, often called chrome steel. This is used for reasons of cost and durability. Bearings are also made from other materials such as stainless steel, ceramics and plastic.

Q: What are the new materials for bearings?

A: Some of the most interesting advances in bearing technology have resulted in various alloys. These include, but are not limited to, aluminum (improving strength), manganese (improving strength and corrosion resistance), leaded and high-leaded tin (improving machinability/lubricity), and tin (adding strength).

Q: What alloys are bearings made out of?

A: Bearing alloys form a special group of materials which have found wide use in the manufacture of slide bearing bushings. The bearing alloys used in commercial practice include cast irons, bronzes, and alloys based on tin, lead, zinc and aluminium. The most common alloys are those of tin and lead.

Q: What stainless steel is used for bearings?

A: 440C Stainless Steel. One of the most widely used bearing grade stainless steel is 440C. This is a martensitic stainless steel with a very high carbon content. The material has additional chromium content along with the addition of nickel.

Q: Why is chrome steel used in bearings?

A: In brief, chrome steel is the most common material for ball bearings due to its high load capacity, good low noise properties and affordability. Stainless steel bearings are designed for wet and mildly corrosive environments, where the bearings are required to cope with medium to high loads or speeds.

Q: What material are big end bearings made of?

A: The copper alloys have higher fatigue strength than the aluminium alloys, and therefore used for crankpin (big-end) bearings which experience higher cyclic pressures than main bearings, and for main bearings in diesel engines.

Q: Is cast iron a good bearing material?

A: Cast irons are standard materials for some applications involving friction and wear, such as brake drums, piston rings, cylinder liners, and gears. Cast irons do well in such applications, and thus should be considered bearing materials.

s one of the leading material manufacturers and suppliers in China, we warmly welcome you to buy material made in China here from our factory. All customized products are with high quality and competitive price. Contact us for more details.