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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 stand radial and thrust loads but axially in one direction only.
They are available with different contact angles as per specs ISO 355.
For heavy industries, multiple two or four rows bearings are available, metric and inch sized.
For easy assembly in blind configuration, with precise adjustment of the internal clearance, there can be available matched sets of two bearings with spacer.
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Spherical Roller Bearings
S-2000 Unit-housed double-row S-2000 spherical roller bearings have higher ratings and long L10 life. These bearings are in cast iron housings and available in pillow block, flange, and piloted flange versions.
Unisphere II High capacity double row spherical bearing in a compact, one-piece ductile iron housing. Interchangeable with ball bearing mounting dimensions.
IMPERIAL spherical roller bearings use a patented adapter mounting system for quick installation and removal. The IMPERIAL roller bearing is available in flange, pillow block, or insert configurations, with interchangeable dimensions and superior sealing options.
Imperial HD provides the added strength of steel housings. For large bore applications (8" and above), Dodge offers the Hydraulic ISAF which incorporates hydraulic nuts and pistons to assist with installation and removal.
USAF/USDAF Split cap spherical bearing using 22200, 22300, 23000, 23100 or 23200 spherical bearing insert. Available in adapter mount/tapered bore and direct mount/straight bore in 500, 600, 200 or 300 series housings.
SNF Plus / SSN Split cap spherical bearing using 22200K bearing insert. Available in adapter mount/tapered bore in 500 series housing. SNF Plus is cast iron, SSN is available in ductile iron or steel.
HFO Two piece split plummer block housing made of cast iron has oil conveying ring lubrication. Available in direct or adapter mount with 22200 or 22300 bearings.
Duplex Bearing Housings - BLO-A and PDNF Engineered product that virtually eliminates misalignment by using two bearings in a single housing.
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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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NSK manufactures a complete range of spherical roller bearings from 25mm to 1.5m bore diameter with the option of parallel or tapered bores (for use with NSK adapter or withdrawal sleeves). Other sizes may also be available on request.
Spherical roller bearings can support high radial loads and moderate axial loads in either direction. They are also suitable for applications involving moderate shock or impact loads.
The inner ring guides two rows of barrel-shaped rollers, with a single spherical outer ring raceway. As such, these bearing can accommodate a varying degree of misalignment depending on their size, but normally between 0.018 and 0.045 radian (1 to 2.5 degrees) with average loads.
Different cage materials are available for these bearings including steel, brass or polyamide depending on the requirements of the application. These bearings are also available with an oil groove and holes in the outer ring for re-lubrication purposes.
In addition, NSK can provide a range of specially designed spherical roller bearings for vibrating machinery applications.
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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 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 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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Timken® spherical roller bearings feature all of the characteristics that have made Timken renowned – superior design, reliable performance and comprehensive technical support. Our spherical bearings are designed to manage high radial loads and perform consistently, even when misalignment, marginal lubrication, contamination, extreme speeds and critical application stresses are present.
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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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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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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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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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Timken® spherical roller bearings feature all of the characteristics that have made Timken renowned – superior design, reliable performance and comprehensive technical support. Our spherical bearings are designed to manage high radial loads and perform consistently, even when misalignment, marginal lubrication, contamination, extreme speeds and critical application stresses are present.
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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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Axial spherical roller bearings are single row, self-aligning roller bearings. They comprise solid shaft and housing washers and asymmetrical barrel rollers with cages. The cage holds the roller and cage assembly together with the shaft locating washer. The bearings can be dismantled. The parts of the bearings can be fitted separately.
Axial spherical roller bearings can support very high axial loads and permit relatively high speeds. Since the raceways are at an angle to the bearing axis, the bearings can also support radial loads.
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GWG produce large diameter spherical roller thrust bearings. In addition to standard items,GWG can make non-standard and custom thrust roller beairngs with shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
Series Number:
292xx
293xx
294xx
Bore diameter range:
150mm-900mm
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Excel series-Spherical Roller Thrust Bearings
The raceway of housing washer of this bearing type is spherical with the center of the radius located 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.
This bearing type is often used for injection molding machines, crane hooks and other large machines.
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Spherical roller thrust bearings are separable single direction acting axial bearings
* Able to accommodate misalignment
* Suitable for high axial and some radial loads
* Relatively high speed ratings
* Standards: DIN 728
* Series: 29200, 29300, 29400
* Application examples: heavy vertical shafts, injection moulding machines, etc.
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Split Roller Bearings are used where access for assembly and maintenance is difficult, but reliability is paramount. The ease and simplicity of replacing components, coupled with the capability to withstand harsh and aggressive environments, the Split Roller Bearing is your ideal choice in a range of industries, such as converters, continuous casting machines, drive shafts…
Split designs are available for cylindrical and spherical roller bearings with outer diameters up to 1750mm.
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CAT can manufacture large size tapered roller bearings metric series and inch series. Delivery time is within 4-5 months for any bearing you may require.
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Key Specifications/Special Features:
-30300 series, 32000 series, 32300 series
-30200 series, 31300 series, 32200series
-All inch series available
-Technical capability:
Accuracy: tolerance from ISO P0-P4 (US ABEC-1---ABEC-7)
Low noise: z1--z3 at accelerated velocity value and zv1--zv3 at velocity value
Working life: according to ISO standard
Primary Competitive Advantages:
-Price
-Quality Approvals
-Customers' Drawings Accepted
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Single-row tapered Roller Bearings are the most widely used tapered roller bearings. They have a high radial capacity and a thrust capacity of about 60% of radial capacity.
The exact percentage depends on the contact angle of the tapered roller bearing. Variations within the type include tapered bores for frequent removal, pin cages and hollow rollers for higher capacity, and steep roller angles for higher thrust capacity.
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NSK manufactures a wide range of metric and inch size tapered roller bearings. These bearings comprise of a loose outer ring cup and an inner ring cone assembly with rollers and retaining cage.
These bearings are capable of taking high radial loads and axial loads in one direction. In addition, the HR series incorporates rollers of increased size and number giving higher load capacity.
Tapered roller bearings are generally mounted in pairs with the proper internal clearance being obtained by adjustment of the axial distance between the cups or cones of the two bearings. As well as single row tapered roller bearings, 2 and 4 row versions are available from NSK to support axial loads in either direction.
NSK tapered roller bearings are normally supplied in through hardened high carbon chromium steel. Alternatively, NSK can supply these bearings case hardened or, for more arduous conditions, in a range of advanced patented materials including High-TF and Super-TF. Please contact NSK for more details.
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Needle and roller bearings and thrust bearings
