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McGill has a broad variety of heavy-duty needle bearings with two series to choose from: CAGEROL & GUIDEROL Bearings.
CAGEROL Cage Type Needle Bearings are designed to accommodate higher speeds and some misalignment. Crowned rollers help increase the load rating of the bearings and steel cages provide accurate roller guidance.
GUIDEROL Heavy-Duty Needle Bearings with center guided rollers utilize a full complement of rollers extending virtually the complete width of the outer race for maximum support. They are designed to provide higher static load capacities and more radial rigidity in applications involving gears, rollers, sheaves, levers, etc.
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Needle roller bearings are roller bearings with cylindrical rollers which are thin and long in relation to their diameter. They are referred to as needle rollers. In spite of their low cross section the bearings have a high load carrying capacity and are thus extremely suitable for bearing arrangements where radial space is limited.
The SKF range of needle roller bearings is extensive and, in addition to customized designs, it comprises the following types:
- Needle roller and cage assemblies
- Drawn cup needle roller bearings with open ends and with closed end.
- Needle roller bearings with and without flanges with and without inner ring
- Sealed needle roller bearings with and without inner ring.
- Alignment needle roller bearings with and without inner ring
- Inner rings for needle roller bearings.
- Combined needle roller bearings (separate section). Needle roller/angular contact ball bearings.
Needle roller/thrust ball bearings.
Needle roller/cylindrical roller thrust bearings.
- Needle roller thrust bearings (separate section).
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These bearings will stand thrust and radial loads and because self-aligning, they absorb the bending deviation of the shaft.
Easy assembly because separable.
Suggested oil lubrication and minimum load dependent on speed has to be taken into consideration for satisfactory running.
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SNR has conducted joint research plans with its steel suppliers, focusing on steel quality evolution; now, the company uses special alloys featuring the utmost cleanliness level. This new steel quality, generalised on our spherical roller bearings, provides higher performance and endurance than the other steel grades used so far.
Furthermore, the heat treatment which is especially applied to the SNR spherical roller bearings guarantees dimensional stability up to 200 °C. The quality of this treatment results in higher endurance and higher ultimate strength and wear resistance of the bearings, allowing them to sustain the most aggressive operating conditions.
Therefore, the combined evolution of the materials and technologies gave rise to an 18 % increase in the dynamic load capacity of the SNR spherical roller bearings, as well as a 75 % service life extension, making our bearings the best performers on the market, while remaining within the same ISO standardisation envelope and in compliance with the ISO standard for basic dynamic load calculation.
Application examples: Rolling mill cages, large reduction gears, large industrial fans, printing press cylinders, quarry machines…
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Spherical roller bearings are principally provided with two rows of symmetrical spherical rollers and a common sphere raceway in out ring, the two inner ring raceways are included at an angle to the bearing axial. The bearings have good self-aligning ability and can operate when the shaft deflection under load or the shaft deflection under load or the shaft misaligning in mounting, and their permissible aligning angle is 1 to 2.5 degree. This type of bearings has heavy load carrying capacity and anti-impact ability, in addition to radial loads, they also can carry axial loads in two directions. In general, this type of bearings permit a low limiting speed.
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GWG make large diameter spherical roller bearings In addition to stardard bearings, GWG supply non-standard and customer bearings in shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
Series No. Bore diameter Range Cage Type
239XX 150~800mm CAM, MB, CC
230XX 150~800mm CAM, MB, CC
240XX 150~800mm CAM, MB, CC
231XX 150~800mm CAM, MB, CC
241XX 150~800mm CAM, MB, CC
222XX 150~800mm CAM, MB, CC
232XX 150~800mm CAM, MB, CC
213XX 150~800mm CAM, MB, CC
223XX 150~800mm CAM, MB, CC
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Excel-series Spherical Roller Bearings
The spherical raceway of outer rings are manufactured and assembled focusing to the center of bearings.
Barrel type rollers and cages are assembled with inner rings.
NACHI Spherical Roller Bearings are suitable for high axial , impulse and heavy load applications such as paper manufacturing, rolling and other large size machineries.
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Spherical roller bearings feature a large load rating and self-aligning capability. This type of bearing is suitable for low- or medium speed applications which involve heavy or impact loading.
Spherical roller bearings are self-aligning, double-row, combination radial and thrust bearings. They use a spherical or crowned roller as the rolling element. The outer ring contains a spherical race which allows for some misalignment of the shaft and housing. Spherical roller bearings are unequalled in their capacity for high loads and tolerance to shock loads, but have limited speed capabilities. They perform consistently, even under conditions of extreme speed, application-specific stress, and marginal lubrication. The cage of a spherical roller bearing provides high dimensional accuracy and functionality. According to some estimates, spherical roller bearings have twice the running life of conventional bearings.
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Spherical roller bearings are non-separable double-row radial bearings, with barrel shaped rollers.
- Excellent alignment compensation
- Suitable for large radial loads
- Low to medium speed ratings
- Standards: DIN 616, DIN 635 (Part 2)
- Series: 21300, 22200, 22300, 23000, 23100, 23200, 23900, 24000, 24100
- Application examples: heavy machinery (e.g. construction and mining machines), rolling mills, gear boxes, shaker screens, etc.
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Invented by McGill engineers over 30 years ago, SPHERE-ROL bearings utilize a single row of spherical rollers which provide a wide variety of advantages.High capacities, high limiting speeds, longer life under more misalignment and protection from contaminants - All these features allow more design flexibility than typically possible with ordinary two-row designs.
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Spherical roller bearings are inherently self-aligning and very robust. The two rows of rollers make the bearings able to carry heavy loads. Invented by SKF and refined over the years, the present SKF range of spherical roller bearings includes a wide range of sizes of several ISO Dimension Series and also includes special designs, for example, for vibrating screens and similar applications. More recently a range of sealed spherical roller bearings has been added to the assortment. Split spherical roller bearings are usually based on the standard bearings but can be customized as required.
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The rarceway of housing washer of this bearing type is spherical with the center of the radius lacated on the bearing axis. The design provides self- alignment capability to the bearing. The Contact angle is approximately 45° enabling the bearing to support axial load and a small to moderate amount of radial load. NACHI Spherical Roller Thrust bearings can sustain high loads at low-to-moderate speeds.
Because of the large load capacity and self-aligning characteristics, this bearing type is often used for injection molding machines, crane hooks and other large machines. Cages are made from machined, high-strength brass or pressed steel.
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Barrel roller bearings are single row, self-aligning roller bearings. They comprise solid outer rings with a concave raceway, solid inner rings with two ribs and a cylindrical or tapered bore and barrel rollers with cages. The bearings cannot be dismantled.
Barrel roller bearings are particularly suitable where high radial shock type loads occur and misalignments must be compensated, see Compensation of angular misalignments. Their axial load carrying capacity is small.
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Find on stock a complete range of rollers and needle cages that it is in:
- Needle Cages with and without joints/HK, RNA49, NA49,...
- Rollers: NATR, NATV, NUTR, NA22,...
- Ring interior: IR.
- Rollers of cams: KR, KRE, KRV, NUKR,...
Find on www.niko-roulements.fr the catalogs in version pdf.
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Spherical roller bearings are double row, self-retaining units comprising solid outer rings with a concave raceway, solid inner rings and barrel rollers with cages. The inner rings with cylindrical or tapered bores.
The symmetrical barrel rollers freely align themselves to the concave outer ring raceway. As a result, shaft deflections and mislignments of the bearing seats are compensated.
X-life
Many sizes of spherical roller bearings are supplied in X-life design. These bearings do not have a central rib on the inner ring so longer barrel rollers can be fitted; improved kinematics, optimised surfaces and even higher performance materials are possible. As a result, the bearings show a significant increase in the basic dynamic load rating and, under the same operating conditions, in the basic rating life. In certain applications, a smaller design of bearing arrangement can therefore be used if necessary.
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Spherical roller bearings are double row,self-reraining units comprising solid outer ring with a concave raceway,solid inner rings and barrel rollers with cages.The inner rings with cylindrial or tapered bores.The symmetrical barrel rollers freely align themselves to the concave outer ring raceway.As a result,shaft deflections and mislignments of the bearing seats are compensated.
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Brand Name:
EBI
Country of Origin:
China (mainland)
Key Specifications/Special Features:
The range of model number:
Inner Diameter : %u03C620mm-%u03C650mm,
Outer Diametor: %u03C640mm-%u03C6100mm
Primary Competitive Advantages:
Price
Quality Approvals
Good life performance
Main Export Markets:
Worldwide
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1.The bearing is Double-Row Angular Contact bearings,DAC type
2.The one box package include one bearing and nut/seal/snap rings/wire etc. accessories
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Needle roller bearings are roller bearings with slender cylindrical rollers, they have the highest load capacity for a given radial space of all rolling-element bearings. This makes these bearings ideal for applications where radial space is limited but high radial load carrying capacity is required. Needle roller bearings are also suitable for applications with high rotational speed but cannot accommodate axial loads.
All needle bearings are variations of two basic designs. The first needle bearing design; full complement, has a full complement of needles and contains no retainer. The second needle bearing design; caged needle contains a retainer or cage for roller guidance and spacing. Caged needle bearings have smaller roller complements and lower load capacities than full-complement bearings.
Needle bearings have the advantage of a higher speed capacity; retainers prevent high-velocity rubbing between adjacent needles and provide more effective roller guidance
(Needle bearings are usually lubricated with grease, but oil or oil-mist lubrication is preferred for heavy-duty or high-speed applications. Many light-duty needle bearings never require re-lubrication, but high loads or speeds demand it).
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There are two kinds of spherical roller bearing, one has a cylindrical bore, the others has a tapered bore (K). Spherical bearings offer an unequalled combination of high load capacity, high tolerance to shock loads, and self-aligning ability but they are limited by speed. Spherical rollers are put between the spherical raceway on the outer ring and the two grooves on the inner ring of the bearing.
The symmetrical barrel rollers freely align themselves to the concave outer ring raceway. As a result, shaft deflections and misalignments of the bearing seats are compensated. Double row spherical roller bearings can accommodate high radial and simultaneously also axial loads in both directions. These bearings are massively widespread, particularly in applications where high load accommodation is required and their self-alignment advantage can be best utilized.
It is particularly suitable for metallurgy, mining, petroleum, cement....etc
(Vibrators, shakers, conveyors, speed reducers, transmissions, and other heavy machinery)
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The wheel bearings of modern, high-performance race cars are normally paired, axially-preloaded hybrid angular contact ball bearings with integrated seals. The main requirements are maximum stiffness for a reduced and uniform brake and tyre wear, low weight to reduce the unsprung masses, minimum friction and maximum reliability.
CEROBEAR hybrid wheel bearings offer optimum performance through an individual bearing design and ideal combination of materials. The best results are achieved by using silicon nitride and high-nitrogen steels as rolling contact partners, whereas modern, high-performance plastics are ideal materials for the cages and seals.
Designs with a high contact angle and tight raceway curvatures are nowadays dominating, since they achieve a very precise and extremely stiff brake disc and tyre guidance for the most demanding load case, which is fast cornering. At the same time, an increase in the axial bearing load capacity and widening of the virtual bearing distance allows a smaller bearing size to be used for maximum weight saving.
Many teams from the Formula 1, World Rally Car, Formula 3, LeMans 24h, ALMS, DTM and NASCAR have recognised these advantages and thus use CEROBEAR hybrid wheel bearings with great success.
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Cylindrical roller thrust bearings are designed to operate under heavy axial loads at moderate speeds. They are relatively insensitive to shock loads, are very stiff and require little axial space. As standard they are available as single direction bearings and can only accommodate axial loads acting in one direction.
Cylindrical roller thrust bearings are of separable design, the individual components can be mounted separately. These bearings do not permit any angular misalignment between shaft and housing nor any errors of alignment between the support surfaces in the housing and on the shaft.
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Axial cylindrical roller bearings
Axial cylindrical roller bearings comprise axial cylindrical roller and cage assemblies and shaft and housing locating washers.
The bearings have particularly small axial section height, have high load carrying capacity and high rigidity and can support axial forces in one direction.
Axial cylindrical roller and cage assemblies
Axial cylindrical roller and cage assemblies comprise axial cages with one or two rows of cylindrical rollers. The cage assemblies have particularly small axial section height, high load carrying capacity and high rigidity. They can support axial force from one direction and act as non-locating bearings in a radial direction. Axial cage assemblies are combined with housing or shaft locating washers or are integrated directly in the adjacent construction. If they are used without
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UNITEC is a manufacturing company, certified according to ISO 9001 and belonging to the MONDIAL Group. In addition to the precision bearings for machine tools (crossed roller bearings, combined axial-radial bearings for ball screws and for indexing tables), UNITEC also manufactures bearings for the following applications:
SCREW EXTRUDERS:
- tandem bearings
TEXTILE INDUSTRY:
- special bearings, cam followers, track rollers
PAPER CONVERTING INDUSTRY:
- axial, radial and combined bearings, self-aligning bearings
PRINTING MACHINES
SENDZIMIR ROLLING MILLS
- Double- or 3-row roller bearings
STEEL AND METAL WORKING INDUSTRY
- multi-row roller bearings for cylinders
- chain wheels
- backup rollers for straightening machines
- combined needle roller bearings
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RBC Tapered Thrust Bearings
RBC Tapered Thrust Bearings are used in applications where heavy loads are present. RBC Tapered Thrust Bearings offer:
* Sealed versions where lubrication is problematic or space constraints do not offer the luxury of a shaft seal
* Unsealed versions available
* Case carburized bearing quality steel
* Size ranges from 1 inch to 3 inches bore diameters
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GWG produce large diameter cylindrical roller thrust bearing . In addition to standard items,GWG can make non-standard and custom bearing with shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
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Cylindrical roller thrust bearings are separable axial bearings:
- Available in single direction as standard, double direction upon request
- Suitable for high axial loads
- Insensitive to shock loads
- Low to medium speed ratings
- Standards: DIN 616, DIN 722
- Series: 81100, 81200
- Application examples: injection moulding machines, presses, etc.
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Catalog sizes and engineered to order bearing designs are readily available.
Cylindrical Roller Designs - Catalog and Engineered
Aligning, Banded, and Double Acting Designs Available
Tapered Roller Designs - TTHD & TTVF
Cantilever Designs for Minimal Shoulder Support
Tandem Thrust 2-8 Stage Designs
High Temperature Designs Available
High Speed Designs Available
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These bearings can take over heavy axial loads and simultaneously they can accommodate radial loads with values of up to 55% of the axial load magnitude.
Because of their self-aligning capability, they absorb the bending deviation of the shaft.
RKB spherical thrust bearings have a machined brass cage guided by a sleeve clamped in the shaft washer bore (suffix EM). The shaft washer and the cage with rollers form a non-separable unit.
The overall dimensions of the spherical roller thrust bearings are in accordance with ISO 104:1979, so that they are interchangeable with different designs, even the earlier ones (suffix B).
Suggested oil lubrication and minimum load dependent on speed has to be taken into account for satisfactory running.
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