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IKO Crossed Roller Bearings are compact bearings with their rollers alternately crossed at right angles to each other between inner and outer rings. They can take loads from any directions at the same time such as radial, thrust and moment loads. The rollers make line-contact with raceway surfaces, and , therefore, elastic deformation due to bearing loads is very small. These bearings are widely used in the rotating parts of industrial robots, machine tools, medical equipment, etc., which require compactness, high rigidity and high rotational accuracy. In addition, bearings made of stainless steel or those with inner and outer rings provided with mounting holes are also available on request. Please contactIKO.
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Apart from ISO series bearings, CEROBEAR also manufactures custom-made hybrid spindle roller bearings for your specific application case. These bearings are also available in low quantities.
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Single row with various types determined by the arrangement of the lips in the internal geometry, with possibility of the separable loose rib to carry thrust load.
Available the standard previous version and the update version "E" with higher load capacities.
The cage material can be polyamide, steel and brass.
Special multiroll type for the heavy industries and mills, also with full complement of rollers and/or on user specifications.
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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.
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Full Complement Cylindrical Roller Bearings are designed to carry heavy load. Comparing with traditional bearings with cage, full complement cylindrical bearings have much higher loading capacity. The radial cross section of the type of bearings is very small. So it can be very sp0ace-saving. However the limiting speed of the bearings is relatively lower. All the multi-row cylindrical roller bearings are with a lubrication groove and one nipple on the outer ring.
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Cylindrical roller bearings
Feature
Cylindrical rollers have linear contact with the raceway, and the bearings can carry heavier radial load. Applications are found in situations characterized by heavy load and shock load and also high rotation speed. The N type and NU type bearings can be movable along the shaft. They can adapt to the position changes between the shaft and housing caused by the thermal expansion or the mounting error and are most suitable for free end shafts. NJ and NF types can accept certain axial load in one direction, and NH and NUP types can accept certain axial load in two directions. Inner ring and outer ring can be separable, and be they are convenient to mount and dismount. FC, FCD and FCDP types can carry comparatively heavy radial load and are mainly applied for mill rolls.
Applications
These bearings are mostly found in middle-sized and large-sized motors, electricity generators, internal combustion engines, gas turbines, machine tool spindles, deceleration devices, unloading and lifting machines and other industrial machines.
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Cylindrical Roller Bearings
Large radial load capacity.
Suitable for high-speed applications.
Low friction between rollers and flanges.
Configuration N , NU
No redial load capacity due to no flange of outer or inner ring.
Used a non-locating side.
Configuration NF , Configuration NJ , Configuration NUH
Small radial load capacity in only one direction with on integral flange or by mountings a loose flange.
Configuration EG
Higher Load Capacities Provide Longer Life
Using larger rollers than those in conventional bearings drastically increases the load carrying capacity of this bearing design. This increase in load capacity provides for longer bearing life.
Low Temperature Rise and Quiet Operation
A polyamide retainer is highly effective in minimizing temperature increases and ensuring quiet operation at high operating speeds.
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Cylindrical roller bearings have high radial-load capacity and moderate thrust loads. They contain rollers which are cylindrically-shaped, but are not true cylinders. Instead, these rollers are crowned or end-relieved to reduce stress concentrations. This geometry results in low friction and allows for high-speed applications. Cylindrical roller bearings are commonly available in precision grades such as RBEC-5, a classification from the Roller Bearing Engineers Committee (RBEC). RBEC ratings describe the accuracy and tolerance range for different types of bearings. As a rule, the higher the RBEC number, the tighter the bearing tolerances. Typically, cylindrical roller bearings are lubricated with oil, which also serves as a coolant.
Most cylindrical roller bearings are made of alloy steels or low-carbon steels. Some applications require the use of case-hardened or thorough-hardened, high-carbon, bearing-quality steel. High-carbon grades of steel do not require carburizing and can be case-hardened by induction heating or thorough-hardened by conventional heating methods. When low-carbon, carburized grades of steel are used, carbon is introduced after the cylindrical roller bearings are machined to a depth sufficient to produce a hardened case that can sustain bearing loads. The addition of carbon and alloys ensures the proper combination of a hard, fatigue-resistant case and a tough, ductile core.
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Small bore MT bearings improve your design and lower manufacturing costs of manipulators, articulating arms, lift-assists, and balancers. If you develop and manufacture ergonomic lift-assist devices, work positioners, and articulating arms, there’s a Kaydon bearing that can increase your design flexibility. It’s a bolt-up bearing in popular compact sizes, and it eliminates the limitations imposed by traditional king post configurations so only one bearing is required in your assembly instead of two.
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Cylindrical roller bearings have the following key features:
- Single-row (design variants N, NJ, NU and NUP) and double-row (design variants NN and NNU) available
- Cage variants: brass (M6, MA6), polyamide (TVP3), and pressed steel (J - coming soon)
- Suitable for high radial loads
- High speed ratings
- Simple mounting due to the possibility to fit inner and outer rings separately
- Full complement versions available for even higher radial loads
- Standards: DIN 616, DIN 5412 (part 1)
- Application examples: industrial gearboxes, mechanical presses, electrical motors, pumps and compressors, traction motors and axle boxes for railway vehicles, steel mills, etc.
The new NKE series single row cylindrical roller bearings offers unlimited possibilities for your applications. Currently more than 3,000 types of this series are produced in Steyr using a new modular component assembly system. This ensures shortest lead-times for your orders.
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Catalog sizes and engineered to order bearing designs are readily available.
RBEC 5 Precision Class Capacity
Extra Capacity Designs
Multiple Retainer Designs Available
High Temperature Designs Available
Special Features: Notches; Slots; Aligning Features; Carburizing Grade Materials.
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Cylindrical roller bearings (single row)
cage designs: sheet steel cage, TB cage, brass cage or cage of glass-fibre reinforced polyamide 66
special lubrications are possible apart from standard lubrication
bearings are available on request with annular groove with or without retainer ring
various radial clearance groups are available
tapered bores are possible too
designs in tolerance classes P6, P5, P4 are possible
Cylindrical roller bearings (double row)
cage design: brass cage
standard clearance is C1
therefore bearings are not exchangeable
bearings have a special tolerance class HP (high precision)
bearings have a standard tapered bore
On request every outer ring can be supplied with a lubricating nut and lubricating holes.
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Construction of this roller bearing type is the simplest of all radial roller bearings. This bearing type is often used in high-speed applications. Because the inner ring, outer ring, and rollers are in line contact, this bearing type has a large radial load capacity. Various Cylindrical roller bearing configurations are:
N,NJ,NF,NU,RNU : integral ribs (flanges)
NH,NP;NUP;NUH : integral and loose ribs
NN,NNU : double-row bearings
Configurations having integral flanges or loose ribs on both the inner and outer rings can sustain a asmall amount of axial load. Since this bearing type supports axial loads as sliding action between the end of the rollers and flange faces, axial loading is Limited. Double-row Cylindrical roller bearings are used for high-speed, high-accuracy applications such as; main spindle support for lathes, milling machines, machining centers.
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RKB double row taper roller bearings can take up heavy loads.
The basic styles are two row converging TDI configuration and two row diverging TDO configuration.
RKB bearings in TDI configuration have a double cone assembly and two single cups and they are generally supplied with a cup spacer.
The cup spacer is face ground after accurate measurement of the distance to obtain a predetermined internal play. Spacers or components may not be interchanged.
RKB also produces the taper roller steep contact angle TDIS version with higher thrust capacity than the TDI type.
These TDIS bearings have combination of face slots (e.g. N, N1, N2) and bore key-way for locking the cone on the shaft.
Also helical groove in the bore and lubrication grooves in side faces of double cone and/or retention sleeve with annular groove and lubrication holes can be provided.
RKB bearings in TDO configuration have a double cup, two single cone assemblies and can be supplied with a shaft supported cone spacer.
The TDO style bearings are mainly used in a floating cup mounting. Additional features of a lubrication groove and oil holes in the double cup for simplified lubrication through the outer ring are included (suffix CD).
In the TDO type the contact angle diverges, so the rigidity of the shaft mounting is increased.
Bearing sets with steep contact angle and intermediate ring, pierced rollers and steel pin-type cage (TDOS design), bearing sets with extended inner rings which abut each other (TDONA and TDONASW designs), bearing sets with heavy wall cup (TNASWH design) and bearing sets with shields of pressed steel (TDO 4422 design) are also in RKB manufacturing program.
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Double-row Tapered Roller Bearings
Two single-row cups end one double cone; one double cup and two single-row cones.
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Link-Belt® Cylindrical Roller Bearings
Standard narrow, wide and intermediate width series
Shaft sizes up to 280mm
High capacity designs
Full complement and retainer designs including formed steel, segmented steel and polymeric
Manufactured to Industry Standards
Link-Belt® Adapter Mounted Spherical Roller Bearings
LER seal is standard
D5 Pentac auxiliary seal
D8 taconite duty auxiliary seal
Adapter mounting and press fit
H7 bearing/housing fit
Industry standard SAF interchangeable
Caps have grade 5 bolts
Precision dowel holes to position unit for consistent mounting
Center support bar in base provides extra support for shock loads
Pry slots in cap for easy removal
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SL Series
SL1818 200mm~800mm
SL1829 200mm~800mm
SL1830 200mm~800mm
SL1822 200mm~800mm
SL1923 200mm~800mm
ZSL1923 200mm~800mm
SL1850 200mm~800mm
SL0148 200mm~800mm
SL0149 200mm~800mm
SL0249 200mm~800mm
SL0450...PP 200mm~800mm
SL04...PP 200mm~800mm
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CEROBEAR hybrid spindle roller bearings open up a significant improvement in the design of spindle systems. They present the optimal solution for the floating bearing side of a spindle shaft. Therefore they are an ideal supplement to spindle ball bearings which require a large amount of engineering efforts if used on the floating side.
Their numerous advantages over conventional spindle bearings make CEROBEAR hybrid spindle roller bearings an economic and high-quality solution in a number of fields of use.
The bearings are produced according to highest precisions. They consist of rings manufactured from high-grade rolling bearing steel and rolling elements made from silicon nitride. Various high-performance plastics such as PEEK or PI are used for the cages.
CEROBEAR hybrid spindle roller bearings are characterised by the following properties:
■ high speeds
■ high reliability
■ high precision
■ high stiffness
■ low friction
■ simple design
■ long service life
■ low operating costs
CEROBEAR hybrid spindle roller bearings are manufactured in ISO dimensions or in customized designs for your specific application.
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SPHERE-ROL® Bearings are available in two standard series:
22200 series, 20mm to 150mm bore sizes
22300 series, 40mm to 100mm bore sizes
SPHERE-ROL® Bearings are the industry's only "off the shelf" sealed spherical roller bearing series that are dimensionally interchangeable with conventional double row spherical roller bearings.
Single-row of large rollers result in increased dynamic load capacity and up to 100% greater misalignment of conventional double row spherical roller bearings.
Potential extended bearing life as a result of three different sealing options available:
NYLAPLATE ® seal
Combination labyrinth / contact seal with low running friction.
NYLAPLATE high temp seal
High temperature material combination labyrinth / contact seal for high temperature applications or where chemicals may be present.
LAMBDA® seal
Sealing features of NYLAPLATE are combined with the lip-wiping sealing function of an added contact seal, for applications where contamination conditions are particularly severe or where substantial amounts of moisture are present.
Available with cylindrical bore or tapered bore.
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Cylindrical roller bearings
CARB® toroidal roller bearings
Spherical roller thrust bearings
Backing bearings for cluster mills
Combined cylindrical roller/taper roller bearings
Spherical roller bearings
Cylindrical roller thrust bearings
Indexing roller units
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Spherical roller bearings are bearings for highest loads and contain two rows of symmetric barrel-shaped rollers which adjust automatically without force in the hollow-ball outer raceway.
Based on this design, shaft deflections and alignment errors can be compensated.
Spherical roller bearings are provided with the maximum number of rollers with highest diameter and high length.
Uniform stress distribution and high load-carrying capacities are archieved by the close osculation between rollers and raceways.
The standard designs of SLF spherical roller bearings are E designs, thus E will not be written separately.
Spherical roller bearings are provided with cylindrical and conical bores. In addition, they are provided with an lubrication ring groove and lubrication bores at the outer race without any additional identification being made.
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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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Tapered roller bearings are generally of separable design and have tapered cone and cup raceway between which tapered roller are arranged, their design makes tapered roller bearings particularly suitable for carrying combined (radial and axial ) load.
Our tapered roller bearings have single, double and four-rows. we manufacture both metric and inch size tapered roller bearings.
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GWG produce large diameter thrust ball bearing. In addition to standard items,GWG can make non-standard and custom beairngs with shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
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GWG produce large diameter taper roller bearings. In addition to standard items,GWG can make non-standard and custom taper roller beairngs with shorter lead time than expected.Both metric and inch sizes are availibale.For more information,please view our homepage www.gwgbearings.com
Single-row
Series No. Bore Dimension Range
329XX 120~900mm
320XX 120~900mm
330XX 120~900mm
331XX 120~900mm
302XX 120~900mm
322XX 120~900mm
303XX 120~900mm
313XX 120~900mm
323XX 120~900m
Double-row
150-800mm
Four-row
150-900mm
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Tapered roller bearings are designed such that cup, cone and rollers have tapered surfaces whose apexes converge at a common point on the bearing axis. Along with metric series bearings, inch series bearings are also available. This type of bearing is suitable for applications that involve heavy or impact loading.
Tapered roller bearings consist of an inner ring (cone), an outer ring (cup), a cage and rollers which are profiled to distribute the load evenly. They have high radial and axial (thrust) load capacities at low to intermediate speeds. Tapered roller bearings are available in single-row, two-row and four-row designs. With single-row bearings, the thrust load capacity is about 60% of the radial capacity. Double-row bearings have a greater radial load capacity and can handle thrust loads from both directions. The rollers can be configured so that the contact lines to the races converge or diverge towards the axis of rotation. Diverging double-row bearings increase the rigidity of the shaft mounting, but converging bearings do not. Other configurations for double-row bearings feature a single outer ring and two inner rings, or two outer rings and a single inner ring. Four-row tapered roller bearings consist of four rows of alternating converging and diverging rollers.
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Single row tapered roller bearings are separable radial bearings:
- Suitable for high radial loads and thrust loads (in one direction)
- Take up tilting moments
- When paired, can take up thrust loads in both directions
- Standards: DIN 616, DIN 720
- Series: 30200, 30300, 31300, 32000, 32200, 32300, 33000, 33100, 33200
- Application examples: gear boxes, pumps, compressors, etc.
Tapered roller bearings, IKOS design are sealed, ready-for-use, non-separable bearing units.
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The inner and outer ring raceways and rollers of this type of bearing are made with a taper so that the planes of the surfaces of the raceways and roller axis meet at a point. The rollers are guided by the cone (inner ring) back-face rib. A single-row Tapered roller bearing can support a combined radial and axial load. If either a radial load or bi-directional axial load is to be carried, a pair of bearings must be used in a "face-to-face" or "back-to-back" mounting.
Tapered roller bearings are separable into the components: outer ring, inner ring and roller assembly. The non-separable inner ring and roller assembly is called the "cone", and the outer ring is called the "cup". Internal clearance is established during mounting by the axial positioning of the cone relative to the cup. This bearing type can be used in a preload situation to obtain higher rigidity and better running accuaracy of the shaft.
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Since the rolling elements in cylindrical roller bearings make line contact with raceways,these bearings can accommodate heavy radial loads . The rollers are guided by ribs on either the inner or outer ring ,therefore these bearings aer also suitablefor high speed applications.Furthermore, cylindrical roller bearings are separable ,and relatively easy to install and disassemble even when interference fits are required.
Double and multiple row bearing arrangments are also available.
Single row cylindrical roller bearings can accommodate heavy radial loads and high speeds. They are manufactured in several different designs,the main difference being in the configuration of the flanges .The most popular are the NU,N,NJ and NUP designs.
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Tapered roller bearings comprise solid inner and outer rings with tapered raceways and tapered rollers with cages. The bearings are not self-retaining. As a result, the inner ring together with the rollers and cage can be fitted separately from the outer ring. Tapered roller bearings can support axial loads from one direction as well as high radial loads. They must normally be axially adjusted against a second bearing fitted in a mirror image arrangement.
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