For industries battling with heavy radial loads, cylindrical roller bearings are the go-to solutions. Their compact design, exceptional load capacity, and robust performance make them an ideal choice to overcome a multitude of operations in diverse industries. The bearings act as a bridge between machinery and various mechanical components, thus helping them to reduce friction.
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They are designed to withstand harsh mechanical conditions. They act as a roller element that supports heavy loads and is applicable to a range of heavy-duty equipment, making it easier for parts to travel through the cylinder. These bearings disperse loads across a larger surface area because of their linear contact surfaces with outer rings.
Let’s explore these promising bearing types and learn their role in the global market.
Cylindrical roller bearings are considered the prominent component made by industrial bearings manufacturers for running any industrial application smoothly. According to recent statistics, the global roller bearing market was valued at $21.5 billion, with cylindrical roller bearings having the highest market share. Experts also estimated that the global roller bearing market can boom to $26.71 billion by the end of at a 3.0% CAGR.
Cylindrical roller bearings feature anti-friction capabilities that reduce friction and deliver high resistance in heavy-duty industrial applications. Thus, they help industries increase the mobility, higher load capacity, and enhanced life span of heavy-duty machines.
Here’s how the cylindrical roller bearings left their impact on the global market share
Market share USD 21.5 in Expected growthUSD 26.71 in Market share by applicationsAutomobile, agriculture, aerospace, manufacturing Market share by regionAsia-pacific, Europe, Middle East, North America, South America Key playersNTN bearings, SKF, NSK Ltd., IKO International, LYC Pvt. Ltd. Product typeCylindrical, tapered, and sphericalNow that you know the booming roller bearing market share and its role in facilitating the operations of different industries, let’s understand different cylindrical roller bearing types.
Cylindrical roller bearings have remained popular across many industries because of their ability to handle heavy radial loads. Unlike ball bearings, which use point contact, CRBs have line contact between the rollers and races that allow them to carry much heavier loads. This makes them suitable for:
While all cylindrical roller bearings excel at handling radial loads, different designs are better suited for certain applications. Here are some common types explained so you can choose the best solution for your needs:
NU (Single Row, Unflanged) : This is considered as the most basic type of cylindrical roller bearing. It consists of a single row of cylindrical rollers separated by a cage, which is housed within an inner ring and its corresponding outer ring. The unflanged design allows axial movement in one direction only. These bearings work well where there aren’t much bi-directional loadings but need higher capacity than what other designs offer due to space limitations or other considerations.
NJ (Single Row, Flanged Inner Ring) : NJ bearings look similar to NU ones because they also have just one row of rollers; however, there’s an additional feature—a flange on the inner ring that gives axial location in one direction. This could be useful when precise positioning along this axis is necessary while preventing any lateral movement away from the desired position.
NUP (Single Row, Flanged Inner and Outer Rings) : NUP bearings have flanges on both the inner and outer rings for axial location in either direction. This provides more stability and is appropriate when moderate bi-directional axial loads are expected.
N (Single Row, Filling Slot) : These bearings are basically NU bearings but with a filling slot on the outer ring. The presence of this feature enables them to accommodate a larger number of rollers thereby increasing overall load capacity compared with standard NU bearing having the same dimensions otherwise. They work best where the highest possible radial load capacity is needed within the single-row design (i.e., no need for double or multi-row configurations).
These are the four types of cylindrical roller bearings available online. Here’s how to select the correct roller bearings for your industrial application.
There’s more to it than just selecting from among these basic types of cylindrical roller bearings. The cylindrical roller bearings are available in different configurations depending on your industrial requirements. Some factors that should be taken into account include:
Cylindrical roller bearings are versatile units capable of easily taking up large radial loads. Different designs cater to various needs; therefore, knowing them will enable you to make an informed choice while purchasing or specifying a suitable CRB type for your application.
It is important to mention here that consulting with experts in this field could save time and money since they have vast experience dealing with such issues which may not be obvious during the initial stages of the selection process.
Cylindrical roller bearings (CRBs) handle heavy radial loads and provide various other benefits that can greatly improve equipment performance and operational efficiency. They are known for their ability to accommodate high speeds, shock resistance, and space-saving design, among other things, making them suitable for use in different industries. Here is an overview of these advantages.
Find the best cylindrical roller bearings for you that match all your requirements.
After understanding the types and benefits, you need to find the best cylindrical roller bearing manufacturer that supports your industrial operations.
Finding the right producer for your cylindrical roller bearings (CRBs) is a must. This choice affects not only the performance of machines but also their efficiency and overall return on investment. You need to do more than just compare prices.
The following are key points to consider when choosing a perfect CRB manufacturer who can become your reliable business partner.
Expertise : Give priority to manufacturers who have worked in your industry before. Their experience means that they understand what you need in terms of application and can, therefore, suggest the most suitable CRB solution for you.
Production Capability : Look at how these producers carry out their processes during manufacturing. It would be best if they had advanced machining facilities, rigorous quality control measures, and high-quality bearing steel, which would lead to consistent production of dependable, high-performance CRBs.
Quality Control : Reliable firms follow strict quality standards such as ISO while conducting robust QC procedures aimed at ensuring uniform product quality, compliance with international specifications as well as mitigating against failures that may be caused by poor bearings.
Bearing Variants : Look for companies offering different types of CRBs in terms of sizes or tolerance classes so that you do not compromise on anything. This enables one to find exactly what they want depending on their unique applications.
Heavy-duty industrial applications demand uninterrupted friction for enhanced operational productivity. Installing highly durable cylindrical roller bearings is vital for your industrial units to achieve maximum industrial potential. All you need to do is select a cylindrical roller bearing designed for harsh mechanical conditions.
Select the best suitable cylindrical roller bearing that is compact and saves less space in your heavy machinery. Partner with the right cylindrical roller bearing manufacturer that follows high manufacturing standards to deliver quality products to its clients.
A roller bearing is a type of bearing that uses rolling elements to support loads and reduce friction. Roller bearings are similar to ball bearings and are designed to carry loads while minimizing friction. In contrast to ball bearings, roller bearings consist of barrel or tapered rolling elements instead of balls. Roller bearings use cylindrical rolling elements rather than balls to transfer load. Roller bearings can handle heavier loads than similarly sized ball bearings, but they cannot operate at the same high speeds as ball bearings. Advances in technology have produced precision roller bearings that offer an excellent balance between cost, size, load capacity, accuracy, life and weight. In this blog we will take a closer look at the different types of roller bearings.
Roller bearings consist of an inner ring, an outer ring and a set of rollers fixed between the two rings. Rollers are usually cylindrical but can also be tapered or needle-shaped. The inner and outer rings are usually made of steel, while the rollers are made of steel or a harder material such as ceramic or tungsten carbide. Roller bearings work on the same principle as ball bearings and have one main function: to carry loads with minimal friction. The difference between ball bearings and roller bearings is the shape and structure. The former uses balls and the latter uses cylindrical rolling elements. Roller bearings can contain single or multiple rows of rolling elements; multiple rows significantly increase radial load carrying capacity. Additionally, using differently shaped rollers can further reduce friction and support radial and axial loads. Although roller bearings can handle higher loads than traditional ball bearings, their applications are usually limited to low-speed operation. Many types of roller bearings are self-aligning and can easily overcome misalignment and installation issues – reducing maintenance, repairs and labor requirements. Roller bearings come in many shapes and sizes and can be customized for special situations. In addition, higher performance can be achieved using flanges, cages and multi-row bearings to meet specific application needs.
Contact us to discuss your requirements of Single Row Cylindrical Roller Bearings. Our experienced sales team can help you identify the options that best suit your needs.
Single row rollers have one row of rolling elements. They have a simple, non-detachable design and can only withstand loads in one direction. The main advantage of single row bearings is that they are an excellent choice for high speed applications. The rolling element load action line and the radial load action line are usually not on the same radial plane. Therefore, single row rollers must be installed in pairs when subjected to pure radial loads.
Cylindrical roller bearings have high radial load capacity and moderate thrust load. They contain cylindrical rollers but are not true cylinders. Instead, these rollers feature convex surfaces or end relief to reduce stress concentrations. This geometry achieves low friction and allows high-speed applications. The rollers are guided by the ribs of the inner or outer ring. The inner ring and outer ring can be separated for easy assembly, and the two can fit tightly. Cylindrical roller bearings are similar in design to needle roller bearings, but the diameter and roller length dimensions are closer. Cylindrical roller bearings have rollers that are longer than their diameter and can handle higher loads than ball bearings. Aubearing’s cylindrical roller bearings can withstand heavy radial loads and can be used in high-speed applications. Cylindrical roller bearings are divided into two categories. Next we introduce single row cylindrical roller bearings and double row roller bearings.
Single row roller bearings are removable, the ring with guide flange is together with the cage with rollers, and the second ring can be assembled separately. They are made in several series in the basic designs NU, N, NJ and NUP. Single row cylindrical roller bearings have the characteristics of high rigidity, low friction, the ability to transmit high radial loads and are suitable for high speeds. Single row cylindrical roller bearings are suitable for special equipment applications and are available with low or high radial clearance. For higher accuracy or higher rotational speeds, use bearings with higher operating accuracy.
Cylindrical roller bearings are designed for increased strength to withstand radial loads. Double row cylindrical roller bearings are interchangeable so that the dimensions and diameter below the rollers (type NNU) and the diameter above the rollers (type NN) comply with ISO/DIN standards. Interchangeability is designed for rings without rollers so that they can be interchanged with competitor inner rings. Double row cylindrical roller bearings are used in printing cylinders, rolling mill rollers, machine tool spindles and other places where thin-walled bearings are needed in printing machinery.
Spherical roller bearings consist of an inner ring with two raceways inclined at an angle to the bearing axis, an outer ring with a common spherical raceway, spherical rolling elements, a cage and, in some designs, an inner center ring. Their construction enables them to carry heavy axial and radial loads at high speeds in any direction, even in the presence of bearing misalignment or shaft deflection. Spherical roller bearings are versatile and available with cylindrical or tapered bores from 20 mm to 900 mm, allowing the user to install them with or without a sleeve adapter. Spherical roller bearings can carry heavy loads even when dealing with misalignment and shaft deflection. Spherical roller bearings are available with a variety of internal clearance and cage options to withstand axial loads in either direction as well as heavy shock loads. Spherical roller bearings have an inner spherical outer ring. The roller is thicker in the middle and thinner at both ends. Therefore, spherical roller bearings can accommodate both static and dynamic misalignment. However, spherical rollers are difficult to produce and therefore expensive, and because there is a certain amount of slippage between the rolling elements and rings, the bearings have higher friction than ideal cylindrical or tapered roller bearings.
Tapered roller bearings are designed on the principle that cones can roll against each other without slipping. They consist of inner and outer rings and rows of inseparable cone assemblies. Tapered roller bearings run on tapered raceways that correspond to the size of the bearing. Tapered design. Due to their large contact surface area, tapered rollers can withstand heavy radial, axial and thrust loads, typically in medium speed applications. They are very similar to cylindrical bearings, but if you decide which one to buy, the main difference is this: Cylindrical roller bearings can only handle a limited thrust load. At the same time, its tapered counterpart can withstand huge thrust loads. Tapered roller bearings generally come in imperial and metric sizes. Tapered roller bearings use tapered rollers running on a tapered race and can generally handle higher loads than ball bearings due to their larger contact area. For example, tapered roller bearings are used as wheel bearings in most wheeled land vehicles. The disadvantages of this type of bearing are that due to the complexity of manufacturing, tapered roller bearings are generally expensive than ball bearings; under heavy loads, the tapered roller acts like a wedge, and the bearing load will tend to try to eject the roller; compared to ball bearings , the force from the collar that holds the rollers in the bearing increases bearing friction.
Needle roller bearings are a variation of cylindrical bearings. The cup design of needle roller bearings enables them to withstand high radial load capabilities in applications requiring high-speed rotational accuracy. The main advantage of needle rollers is the ability to use the mating surface as an inner raceway or an outer raceway, or both. Needle roller bearings maintain a simple cross-sectional design. Needle roller bearings are thinner than traditional roller bearings and can be designed with or without an inner ring. Needle roller bearings are ideal for handling radial space constraints in heavy-load, high-speed applications. Needle roller bearings enable high load capacities while still offering a slim cross-section design. These bearings are available with imperial or metric seals. Needle roller bearings are used extensively in automotive components such as rocker arm pivots, pumps, compressors and transmissions. Driveshafts on rear-wheel drive vehicles usually have at least eight needle bearings (four per U-joint), often if they are particularly long or run on steep slopes.
Thrust bearings are special rotating bearings used to handle high loads in harsh environments. Thrust bearings are designed for pure thrust loads and can carry little or no radial loads. Roller thrust bearings use similar rollers to other types of roller bearings. Thrust roller bearings can be equipped with cylindrical rollers or spherical rollers. Thrust bearings only bear axial load, but have high axial rigidity and are suitable for heavy loads. They contain convex rollers, are self-aligning, and are not affected by shaft deflection or installation errors.
The frequency and extent of damage vary by industry and application. For example, roller bearings in the pulp and paper industry fail due to contamination and poor lubrication rather than fatigue. These events often leave damaging imprints within the bearing raceway, known as path pattern damage. Inspecting components enables users to determine the root cause of damage. Therefore, they can use a bearing puller to remove the bearing from the shaft, inspect it, and take corrective action to ensure the problem does not occur. Take, for example, contamination due to seal failure. Particles are lodged in the bearing recesses along the raceway. Continuous excessive rolling can cause sharp dents in the track. When normal function puts stress on the dented area, it can cause surface fatigue. The metal casing begins to pull away from the raceways, a process called spalling. If the user does not address the damage, the spalling will continue until the bearing becomes unusable.
Customers can use the formula for bearing dynamic capacity C to calculate roller bearing life. It refers to the standard static radial load that a rolling bearing can withstand for one million cycle life. Industrialists use bearing dynamic capacity to predict rating life at specific loads and rolling speeds. Manufacturers recommend that roller bearings be subjected to a maximum operating load of half the load carrying capacity. The International Organization for Standardization (ISO) and the American Bearing Manufacturers Association (ABMA) define calculation methods, usually considering raceways. Internal dimensions and rolling elements. “Rated Life” is the bearing durability calculated at 90% reliability. It is defined as the amount of time a set of identical rollers completes before fatigue spalling occurs. The basic calculation formula to determine the rated life of the bearing (L10) is as follows:
Bearing selection is the process of matching specific bearings to application requirements, including load, misalignment, speed and torque. Rolling element bearings support loads through the contact that exists between rolling elements and raceways. During rotation, one raceway moves relative to the other. Rolling bearings come in many different forms, each with a unique set of functions. The suitability of a rolling bearing for a specific application depends on the match between these characteristics and the application requirements. In this case, certain factors must be considered when choosing the most suitable bearing type. According to the SKF (leading rolling bearing manufacturer) catalog, the following are the key factors for optimal bearing selection:
Although roller bearings are standardized components, selection criteria for the correct bearing can only be established to a limited extent, usually based on application requirements. Still, buyers must consider one of the main dimensions of the bearing, usually the bore diameter, in light of the overall design and construction. Today, computerization of the design process allows manufacturers to create bearings with optimal dimensions. The technology can also help consumers pick the right parts for use in various machines. When looking for the right bearing for a specific application, project managers and designers should focus on the following factors:
Rolling bearings have properties that make them suitable for certain applications. For example, cylindrical roller bearings are popular in rolling mills, machine tool spindles, and medium- and heavy-duty electric motors. High radial load carrying capacity, precision, high support stiffness, high speed capabilities etc. make it suitable for such applications. Ball bearings are used in electric vehicle motors where the load is usually a combination load or radial load and is relatively low, while the speed range is wide and reaches a fairly high level. These bearings are also used in light-duty gearboxes, conveyor rollers and small vehicles. Important aspects of selection include light load, dual load capacity and low cost.
When looking for bearings to support combined axial and radial loads as well as high loads, tapered roller bearings are the better choice. Therefore, they are used in wheels for off-road vehicles, passenger cars, gearboxes for marine drives, landing gear for aircraft, printing presses, other transmission systems and machine tool spindles. Special factors such as heavy load capacity and adjustability for accuracy and stiffness should be considered during the selection process. Spherical roller bearings are used in windmills, rolling mills, paper mills, large industrial gearboxes, etc. They have efficient misalignment capabilities and heavy radial load carrying capacity. Finally, needle roller bearings are used in automotive transmissions due to their compactness and economy.
Roller bearings are subject to standards indicating their accuracy and efficiency. Bearing quality is rated by RBEC (Roller Bearing Engineering Council). These grades classify different accuracy and tolerance ranges of roller bearings. The higher the RBEC number, the tighter the bearing tolerances. Ultra-high-speed applications will benefit most from precise bearings. Manufacturers do not have to follow these industry guidelines. North American roller bearings adhere to RBEC grades, while other ball bearings adhere to ISO or its regional equivalent (DIN, KS, etc.). There are five acceptable levels of RBEC rating, and the levels are independent of bearing size. For ball bearings, these tolerance classes are ABEC 1, ABEC 3, ABEC 5, ABEC 7 and ABEC 9. Similarly, the accuracy classes of roller bearings (cylindrical and spherical) are RBEC 1, RBEC 3, RBEC 5, RBEC 7, and RBEC 9. The values of ABEC and RBEC classes are the same: for both, the higher the class number, the better the bearing The smaller the tolerance – and therefore the better the bearing’s accuracy, efficiency and speed capabilities.
The main difference between roller bearings and ball bearings is the type of rolling elements used. Roller bearings use cylindrical rollers, while ball bearings use balls. Therefore, roller bearings can handle heavier loads and are suitable for applications with heavy radial or thrust loads. Roller bearings have a larger contact area than ball bearings and are suitable for heavy-duty applications. The load is assumed to be evenly distributed over multiple axes. In this case, roller bearings are usually less expensive to manufacture and maintain over their lifetime because there is less friction between the rings.
Additionally, roller bearings typically have higher load carrying capacities and lower speed ratings than ball bearings. Ball bearings, on the other hand, are better suited for high speeds and low to moderate load applications. One of the most significant differences between roller bearings and ball bearings is that roller bearings are generally expensive than ball bearings. However, they offer several advantages, including higher load-bearing capacity and greater accuracy.
Bearing size is an important aspect of roller bearings, and there are several factors that determine roller bearing size. These factors include the diameter of the mounting shaft, the bore diameter of the bearing, the outer diameter and the width of the bearing. Bore diameter is the inside diameter of a roller bearing, usually measured in millimeters (mm). The width of a bearing is the distance between the outer rings of the bearing, also measured in millimeters. In order to determine the correct size of a roller bearing with a shaft as the rotating element and a transition fit in the outer ring, it is necessary to know the diameter of the shaft on which it will be installed. The diameter of the shaft must be larger than the bore diameter of the bearing because the bearing must fit snugly on the shaft. A tight fit is required to prevent the bearing from rotating on the shaft, which can cause damage to the bearing and shorten its service life. On the other hand, if the outer ring rotates, the diameter of the housing must be smaller than the outer ring, and the shaft will have a transition fit.
When selecting the appropriate size, in addition to the bore diameter and width, the load capacity of the bearing must also be considered. The load capacity of a roller bearing is determined by the bearing type, size and material. For example, larger bearings can generally handle higher loads than smaller bearings. It is also important to consider operating conditions such as speed and temperature, as these conditions can affect the size and load capacity of the bearing. For example, in high-speed applications, bearings with low coefficients of friction and high load capacities may be required. To ensure proper operation and service life of roller bearings, it is critical to select the appropriate size based on specific application requirements. It is also important to choose the correct lubrication for the specific situation.
2. The manufacturing process of tapered roller bearings: blank forming → deburring or ring belt → soft grinding of raceway surface → soft grinding of double end surfaces → heat treatment → rough grinding of rolling surface → fine grinding of rolling surface → ball base surface grinding → final grinding of rolling surface →Super finishing rolling surface→Cleaning and drying→Final inspection of appearance and size grouping→Oil coating and packaging. The above two kinds of rollers can be made into convex busbar rolling surfaces. If the convexity is less than 0.005mm, it can generally be carried out directly in the super-finishing rolling surface process; if the convexity is greater than 0.005mm, it can generally be rolled in the last final grinding process. The convexity is ground out in the surface process and then super-finished.
4. The manufacturing process of spherical roller bearings: blank forming → deburring or ring belt → soft grinding of raceway surface → soft grinding of double end faces → heat treatment → grinding of non-spherical end faces → grinding of ball end faces → coarse, fine and final grinding of rolling surfaces → Polishing → cleaning, drying → final appearance inspection, size grouping → oiling and packaging. The process of symmetrical spherical rollers is: blank forming → deburring or ring belt → soft grinding of raceway surface → soft grinding of double end faces → heat treatment → rough grinding of rolling surface → rough and final grinding of double end faces → fine and final grinding of rolling surfaces → polishing →Cleaning and drying→Final inspection of appearance and size grouping→Oil packaging. If the final grinding rolling surface process can meet the surface roughness requirements, polishing does not need to be performed.
(1), A, B, C, D, E—— Internal structure changes.
Example: Cylindrical roller, spherical roller and thrust spherical roller bearings N309E, E, E – enhanced design, improved bearing load capacity.
(2), VH – full-roller cylindrical roller bearing with self-locking rollers (the compound circle diameter of the rollers is different from that of standard bearings of the same model).
Example: NJVH.
(1), DA – separable double row angular contact ball bearing with double half inner ring. Example: DA.
(2), DZ——Roller bearing with cylindrical outer diameter. Example: ST017DZ.
(3), K—— tapered bore bearing, taper 1:12. Example: K.
(4), K30- tapered bore bearing, taper 1:30. Example: K30.
(5), 2LS – double row cylindrical roller bearing with double inner ring and dust cover on both sides. Example: NNFVC.2LS.V—— Internal structure change, double inner ring, dust cover on both sides, full roller double row cylindrical roller bearing.
(6), N—— Bearings with stop grooves on the outer ring. Example: N.
(7), NR—— Bearings with stop grooves and stop rings on the outer ring. Example: NR.
(8), N2-—— four-point contact ball bearing with two stop grooves on the outer ring. Example: QJ315N2.
(9), S—— Bearing with lubricating oil groove and three lubricating oil holes in the outer ring. Example: S. Spherical roller bearings with bearing outer diameter D ≥ 320mm are not marked with S.
(10), X—— Overall dimensions comply with international standards. Example: X
(11), Z.——Technical conditions for special structures. Starting from Z11 and working downwards. Example: Z15——Stainless steel bearing (W-N01.).
(12), ZZ——The roller bearing has two retaining rings that guide the outer ring.
(1), RSR—— The bearing has a sealing ring on one side. Example: RSR
(2), 2RSR—— The bearing has sealing rings on both sides. Example: .2RSR.
(3), ZR—— The bearing has a dust cover on one side. Example: ZR
(4), 2ZR bearings are equipped with dust covers on both sides. Example: .2ZR
(5), ZRN—— The bearing has a dust cover on one side and a stop groove on the outer ring on the other side. Example: ZRN.
6), 2ZRN—— The bearing has dust covers on both sides and a stop groove on the outer ring. Example: .2ZRN.
1), F—— Steel solid cage, rolling element guide.
2), FA – steel solid cage, outer ring guide.
3), FAS – steel solid cage, outer ring guide, with lubrication groove.
4), FB—— Steel solid cage, inner ring guide.
5), FBS – steel solid cage, inner ring guide, with lubrication groove.
6), FH—— Steel solid cage, carburized and quenched.
7), H, H1——carburizing and quenching cage.
8), FP——steel solid window cage.
9), FPA – steel solid window cage, outer ring guide.
10), FPB – steel solid window cage, inner ring guide.
11), FV, FV1——Steel solid window cage, aged, quenched and tempered.
12), L—— Light metal solid cage, rolling element guide.
13), LA – light metal solid cage, outer ring guide.
14), LAS – light metal solid cage, outer ring guide, with lubrication groove.
15), LB——Light metal solid cage, inner ring guide.
16), LBS——Light metal solid cage, inner ring guide, with lubrication groove.
17), LP – light metal solid window cage.
18), LPA – light metal solid window cage, outer ring guide.
19), LPB – light metal solid window cage, inner ring guide (thrust roller bearing is shaft guide).
20), M, M1——brass solid cage.
21), MA – brass solid cage, outer ring guide.
22), MAS——brass solid cage, outer ring guide, with lubrication groove.
23), MB——brass solid cage, inner ring guide (thrust spherical roller bearing is shaft ring guide).
24), MBS——brass solid cage, inner ring guide, with lubrication groove.
25), MP—— Brass solid straight pocket cage.
26), MPA – brass solid straight pocket and cage, outer ring guide.
27), MPB – brass solid straight pocket cage, inner ring guide.
28), T—— Phenolic laminated pipe solid cage, rolling element guide.
28), TA – phenolic laminated pipe solid cage, outer ring guide.
30), TB – phenolic laminated pipe solid cage, inner ring guide.
31), THB – phenolic laminated cloth tube pocket type cage, inner ring guide.
32), TP—— Phenolic layer cloth tube straight pocket cage.
33), TPA – phenolic laminated cloth tube with straight pocket cage and outer ring guide.
34), TPB – phenolic laminated cloth pipe with straight pocket cage and inner ring guide.
35), TN – engineering plastic molded cage, rolling element guide, with additional numbers indicating different materials.
36), TNH—— Engineering plastic self-locking pocket cage.
37), TV – glass fiber reinforced polyamide solid cage, steel ball guided.
38), TVH – glass fiber reinforced polyamide self-locking pocket-type solid cage, guided by steel balls.
39), TVP – glass fiber reinforced polyamide window type solid cage, steel ball guided.
40), TVP2 – glass fiber reinforced polyamide solid cage, roller guide.
41), TVPB – glass fiber reinforced polyamide solid cage, inner ring guide (thrust roller bearing is shaft guide).
42), TVPB1 – glass fiber reinforced polyamide solid window cage, shaft guide (thrust roller bearing).
(1), P0 – the tolerance level complies with the level 0 specified by the international standard ISO, and is omitted in the code and does not indicate it.
(2), P6 – the tolerance level complies with level 6 specified by the international standard ISO.
(3), P6X – Grade 6 tapered roller bearings whose tolerance level complies with the international standard ISO.
(4), P5 – the tolerance level complies with level 5 specified by the international standard ISO.
(5), P4 – the tolerance level complies with level 4 specified by the international standard ISO.
(6), P2 – the tolerance level complies with level 2 specified by the international standard ISO (excluding tapered roller bearings).
(7), SP – dimensional accuracy is equivalent to level 5, and rotation accuracy is equivalent to level 4 (double row cylindrical roller bearings).
(8), UP——The dimensional accuracy is equivalent to level 4, and the rotation accuracy is higher than level 4 (double row cylindrical roller bearing).
(9), HG——The dimensional accuracy is equivalent to level 4, and the rotation accuracy is higher than level 4 and lower than level 2 (spindle bearing).
(1), C1——The clearance complies with group 1 specified in the standard and is less than group 2.
(2), C2——The clearance complies with Group 2 specified in the standard and is less than Group 0.
(3), C0 – the clearance complies with group 0 specified in the standard, and is omitted in the code and not represented.
(4), C3——The clearance complies with the 3 groups specified in the standard and is greater than the 0 group.
(5), C4——The clearance complies with the 4 groups specified in the standard and is greater than the 3 groups.
(6), C5——The clearance complies with the 5 groups specified in the standard and is greater than the 4 groups.
(1), S0——The bearing ring has been tempered at high temperature, and the working temperature can reach 150 ℃.
(2), S1——The bearing ring has been tempered at high temperature, and the working temperature can reach 200 ℃.
(3), S2—— The bearing ring has been tempered at high temperature, and the working temperature can reach 250 ℃.
(4), S3——The bearing ring has been treated with high temperature tempering, and the working temperature can reach 300 ℃.
(5), S4——The bearing ring has been tempered at high temperature, and the working temperature can reach 350 ℃.
Thousands of different types of roller bearings are available to meet specific application requirements. Aubearing offers a wide selection of roller bearings. As an industry leader in the distribution of quality ball and roller bearings, Aubearing is proud to be a trusted partner to leading brands including SKF, FAG, INA, IKO, NACHI, NSK, NTN. Our experts are on hand to guide customers in selecting the best bearing type for their unique needs, and we’ll work closely with your team to ensure you choose the best option. To learn , contact us today.
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