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Deep Groove ball bearings are the most popular of all the ball bearing types because they are available in a wide variety of seal, shield and snap-ring arrangements.The bearing ring grooves are circular arcs made slightly larger than the radius of the ball.
The balls make point contact with the raceways
(elliptical contact when loaded).
The inner ring shoulders are of equal height (as the outer ring shoulders). Deep Groove ball bearings can sustain radial, axial, or composite loads and because of simple design, this bearing type can be produced to provide both high-running accuracy and high-speed operation. Standard ball retainers (cages) are made from pressed steel. Machined cages are used in bearing operation at very high speed or for large diameter bearings.
Deep Groove ball bearings with seals or shields are standardized. They contain proper amount of grease in advance.
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Angular contact ball bearings with single row, double row, matched sets.
To stand axial and radial loads the range will include different contact angles (12 to 60 degrees), high accuracy for machine tool spindle applications, large size for heavy industries and wheel special bearings also.
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The construction of this ball bearing is similar to mounting two single row angular ball bearings back to back(DB).
Capacities of double row ball bearing is less than single row since few balls can be inserted per row.
This bearing type can sustain radial, moment and bi-directional axial loads.
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- sizes per Type Series 70, 72,73,
- low-friction, low noise, rolling contact ball guide,
- self-adjusting preload, increased number of balls,
- running during extended lifetime with high precision.
- 16º contact angle, face-to-face orientation,
- standardised per DIN 628 part 5
- Precision ABEC 5...7...9...HQ
two rows within the space of a single row bearing:
- Type K (factory standard)
- Type UK (dimensional series 20)
- Type UL, UM (Type series 72, 73)
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Cylindrical roller bearings with snap ring grooves
. Basic Design: Full complement. Double row. Sealed on both sides
. Highest dynamic & static load ratings:
- Maximum utilization of bearing section provides maximum load ratings.
. Superior sealing capability:
- Unique design rubber contact seal prevents dust & water invasion.
. Location: Easy to locate axially due to snap rings on both sides.
. Lubrication: - Lubricate with a lithium soap-based grease containing an EP additive.
. Relubrication: - Lubricate through lubrication hole & grooves only in inner ring.
. Operating temperature: Suitable for -30 to +120°C
. Application: Highly suitable in rope sheave
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features:
Acetal races as standard
Polypropylene,PEEK, nylon and other materials for bearing races also available
Stainless steel 316 balls as standard
Glass, plastic and other stainless steel ball types available
advantages:
Corrosion resistant
Lubrication free
Lightweight
Low friction
Quiet
Hygienic
Maintenance free
Non-metallic with glass balls
Non-magnetic with glass balls
In excess of 25 years proven performance
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Angular contact bearings are designed such that a contact angle between the races and the balls is formed when the bearing is in use. The major design characteristic of this type of bearing is that one, or both of the ring races have one shoulder relieved, or higher than the other. In order for these bearings to function properly, they must be assembled with a thrust load. This loading (or preload) creates a line of contact (or contact angle) between the inner race, the ball and the outer race. The preload can be built into the bearing or created when the bearing is inserted into an assembly. The contact angle varies from 15° to 40° and is measured relative to a line running perpendicular to the bearing axis. Angular contact bearings are unidirectional thrust bearings that can withstand heavy thrust loads and moderate radial loads.
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Flush ground set combination
(Universal matching)
Flush ground set combination bearings are also available with suffix U. This permits the use of random combinations where two or more bearings are mounted.
This type is used for for supporting the ball screws that are used as actuators of high precision and high machines, precision measurement equipment, robots, etc. This is a precision and high ability bearing.
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Timken produces precision bearings and assemblies in miniature, instrument and thin-section series. All are manufactured with quality steel, tolerances and features that meet demanding application challenges. These precision bearings and assemblies are applied in surgical and medical imaging devices, precision pumps, measurement and material handling equipment as well as guidance, weapons and space applications.
Super precision ball bearings are available in inch sizes.
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SNFA Series VEB (ISO 19) and VEX (ISO 10) have been developed to offer outstanding performance even in very demanding and advanced applications.
The different issues affecting high speed applications have been analysed when designing and producing these series. Particular attention has been paid to dynamic and heat effects and lubrication problems without neglecting other features such as the load capacity and rigidity. VEB and VEX bearings offer a wide range of application possibilities both with grease and oil lubrication.
The values given for rigidly preloaded bearings are valid as long as operating conditions do not involve marked heat-induced preload increase. In some applications, such as electrospindles for instance, the electric motor generated heat thermally increases bearing preload and reduces the
speed obtainable. H1/NS version VEB and VEX bearings (with ceramic balls and air-oil lubrication feed holes in the outer ring) are the ideal solution for reaching maximum speed.
Minimum air-oil lubrication, controlled constant preload, accurate bearing mounting and good spindle balance are necessary for obtaining satisfactory results with VEB and VEX bearings.
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Koyo's line of EXSEV (Extreme Special Environment) bearings were specifically engineered for the tough applications..like those involving high temperatures, corrosive solutions and atmospheres, dry lubrication, low particle emissions, non-magnetic environments and high vacuum conditions.
Koyo meets the challenge with specialty steels, silicon nitride bearing components and advanced dry film coatings for protection and low particle emissions.
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High temperature bearings
Fitted with a steel sheet cage, the F600 range bearings receive a specific surface treatment making them more resistant to oxidation and thermal shocks, and allowing operations between 200°C and 350°C.
Suitable for slow handling at high temperatures, they require a rotating speed of less than 50 RPM and moderate loads. Radial clearance was increased to compensate for thermal expansion deviations between the 2 rings and for neighbouring component distortions.
The special treatments of the F600 series can be applied on request to other bearing symbols and types (e.g. spherical roller bearings). Please contact SNR's technical departments.
Applications examples: oven carriages, transport rolls, conveyors, porcelain works, glass making, foundries, cement plants, brick plants…
Series: F600 (standard), F604 (greased and protected), F605 (limestone process)
6000, 6200, 6300
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Development of low-torque ball bearing that improves automotive fuel efficiency.
JTEKT Corporation has developed a low-torque ball bearing for use in oil lubrication that improves automotive fuel efficiency.
Many oil-lubrication ball bearings are used in the motor-support areas of hybrid vehicle transmissions and the gear-support areas of automotive automatic transmissions, manual transmissions, and continuously variable transmissions.
Further improvement in automotive fuel efficiency is currently sought, and further reduction of rotational resistance (rotational torque) in the ball bearings used in the above mechanisms is seen as essential. By optimizing the design dimensions of the bearing internal parts, JTEKT has succeeded in reducing rotational torque 40% in comparison with the conventional product.
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SNFA's prime objective has always been to reach the highest levels of specialisation in the design, development and manufacture of precision bearings.
The various series manufactured by SNFA present a wide variety of configuration and sizes. They consist of bearings ranging from a minimum of 6 mm diameter bore to a maximum of 380 mm outer diameter.
Development has always been in line with international standards, as there is a need to offer interchangeability, bearing specifications are therefore classed in accordance with such standards. Specifically, SNFA bearing are designed and manufactured in accordance with the following standards:
- Overall dimension, radii ABMA Std 20 (Equivalent to ISO 15)
- Dimensional tolerance ABMA Std 20 (Equivalent to ISO 492)
- Running accurary tolerance ABMA Std 20 (Equivalent to ISO 492)
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Angular Ball Bearings with Ceramic Balls for Super High Speed Operation
These bearings present the super high speed dn value, 2,100,000 (as dmn value; 2,600,000) using air-oil lubrication. Boundary dimensions are equal to the ISO standard series, but super high speed revolution using air-oil lubrication can be obtained. Bearings also operate under high acceleration conditions.
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Deep groove ball bearings are available in a variety of sizes, and are the most popular of all rolling bearings. This type of bearing supports radial load and a certain degree of axial load in both directions simultaneously.
Extra-small ball bearings and miniature ball bearings:
The open type is widely used. Also available are the shielded / sealed type and the flanged type; the latter is easily positioned in the axial direction.
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Miniature Precision Ball Bearings
Ball bearings are machined components that include an outer ring, inner ring, balls, retainers, shields and snap rings. NMB's miniature ball bearings are available in inch and metric sizes, open or shielded and flanged or unflanged. For extreme noise sensitive applications, superior hardness and corrosion resistance our ball bearings are manufactured with DD400™ stainless steel material. Chrome steel is availablle for applications in uses and environments where corrosion resistance is not a critical factor.
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features:
Acetal races as standard
Polypropylene,PEEK, nylon and other materials for bearing races also available
Stainless steel 316 balls as standard
Glass, plastic and other stainless steel ball types available
advantages:
Corrosion resistant
Lubrication free
Lightweight
Low friction
Quiet
Hygienic
Maintenance free
Non-metallic with glass balls
Non-magnetic with glass balls
In excess of 25 years proven performance
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These bearings employ plastic for the bearing box and ceramics for the ball, and can be used in corrosive environments with developing fluid and steam.
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features:
Acetal races as standard
Polypropylene,PEEK, nylon and other materials for bearing races also available
Stainless steel 316 balls as standard
Glass, plastic and other stainless steel ball types available
advantages:
Corrosion resistant
Lubrication free
Lightweight
Low friction
Quiet
Hygienic
Maintenance free
Non-metallic with glass balls
Non-magnetic with glass balls
In excess of 25 years proven performance
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Self-aligning ball bearings
With double ball rows and a spherical raceway in the outer ring, self-aligning ball bearings can compensate for installation errors or shaft misalignment.
The SNR double-row self-aligning ball bearings are useful for applications requiring high rotating speeds while exercising moderate radial, and moderate or low axial loading.
SNR proposes an extensive range of self-aligning ball bearings, available with or without seals. Certain Series are fitted with an increased width inner ring (11200, 11300 Series) for easier fitting on shaft.
Technical data:
• Common dimension bearings are fitted with a metallic or synthetic cage (maximum continuous operating temperature = 120°C). Large size bearings are equipped with steel sheet or machined brass cages.
• 2200 and 2300 Series bearings can receive seals.
• Clearance : normal, increased (C3).
Application examples : Long-shaped and flexible shafts, standard industrial applications, chemistry, agriculture…
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Self aligning ball bearings are non separable double-row radial bearings:
- Excellent alignment compensation due to the spherical outer ring raceway
- Suitable for low to medium radial loads and low thrust loads
- Available in open and sealed versions, as well as in tapered bore (suffix K)
- Standards: DIN 616, DIN 630
- Series: 1200, 1300, 2200, 2300, 11200, 11300
- Application examples: agricultural machinery, chemistry, pumps, etc.
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in dimension series:
1204.. up to 1220..
2204.. up to 2220..
1304.. up to 1319..
2304.. up to 2319..
11205.. up to 11212..
11306.. up to 11310..
cage design: cage of glass-fibre reinforced polyamide 66 resp. brass cages for larger measurements, sheet steel cages on request
series 22.. and 23.. also in sealed version
self-aligning ball bearings are available with cylindrical and tapered bore
larger dimensions on request
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This type is constructed with the inner ring and ball assembly contained within an outer ring which has a spherical raceway. Due to the construction, this bearing type will tolerate a small angular misalignment from deflection or mounting error. Self-aligning ball bearings are suitable for long shafts where accurate positioning of housing bores is difficult. This type is often used in conjunction with pillow blocks. Cages are made from pressed steel or polyamide resin. This bearing should only be used in light axial load applications due to the small axial support of the rolling elements by the outer ring raceway.
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Angular contact ball bearings with single row, double row, matched sets.
To stand axial and radial loads, the range will include different contact angles (12 to 60 degrees), high accuracy for machine tool spindle applications, large size for heavy industries and wheel special bearings also.
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The SNR single-row radial contact ball bearing range is suitable for the most diversified applications. Designed essentially to sustain moderate radial loads, these bearings, which are the most commonly used, also sustain moderate axial loads in all directions. They are particularly suitable for applications with high rotating speeds and when energy loss limitation is sought.
Technical data:
• Standard steel sheet, or solid cages, or polyamide cages (with 25% glass fibre fill)
• Nitrile Seal or baffle
• Normal or increased clearance (C3). Other clearance categories are available on request.
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The raceways of both the inner and outer rings of this bearing type are made with a set contact angle.
Single-row Angular Contact ball bearings can sustain radial, axial or composite loads, however, any axial load must be in one direction.
Larger contact angle type has better axial load capability.
Small contact angle type has higher permissible speed capability.
This bearing type is generally used in adjacent positions.
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Spindle bearings are single row angular contact ball bearings comprising solid inner and outer rings and ball and cage assemblies with solid window cages. They cannot be dismantled. The bearings are available in open and sealed versions.
Spindle bearings have restricted tolerances. They are particularly suitable for bearing arrangements with very high requirements for guidance accuracy and speed capacity. They have proved highly suitable for the bearing arrangements of spindles in machine tools.
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- sizes per Type Series 719, 70 (718 per agreem.)
- installlation-ready, preloaded universal bearings with fibre cage, and 21º contact angle, optimised for high speed and axial stiffness;
- Precision ABEC 7... 9... HQ
- single row 719/70 USS...
- double row 719/70 USO... (in face-to-face/"DB"-configuration)
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Here's a low profile, large bore bearing that's destined to change your thinking about robotics, inspection equipment, satellites, cameras and similar applications where precise positioning and lightweight designs are critical.
At just 2.5mm wide, ULTRA-SLIM® bearings are available in bore sizes ranging from 35mm to 170mm for an array of applications requiring compact motion control design components.
Precision-engineered ULTRA-SLIM® bearings are made of stainless steel for corrosion resistance. Hybrid versions with ceramic balls are available upon request. ULTRA-SLIM® bearings are available in angular contact (Type A) radial contact (Type C), and four-point contact (Type X) styles.
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