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Cylindrical And Thrust Ball Bearings

Cylindrical And Thrust Ball Bearings

Product catalog summary

Overview of Cylindrical Roller Bearings
Cylindrical roller bearings are designed for high radial load capacity due to linear contact between raceways and rollers. They are suitable for applications with heavy radial and impact loading and can be used in high-speed applications due to precise machining. The separable nature of the inner and outer rings facilitates easy assembly and disassembly.

Design Variations
Different designs are available based on ring flange arrangements:

NU-type: Two-flanged outer rings, flat inner ring, separable components.
N-type: Two-flanged inner rings, flat outer ring, separable components.
NUP-type: Two-flanged outer ring, one-flanged inner ring, separable flanged washer.
NJ-type: Two-flanged outer ring, one-flanged inner ring, supports axial load in one direction.

Bearing Features

Tolerances: Manufactured in NORMAL precision class as per ISO 492 and ISO 199 standards.
Misalignment: Limited to 2-4 angular minutes depending on type and specification.
Internal Clearance: Available with normal, C3, and C4 radial internal clearance as per ISO 5753.
Speed: Limiting speeds depend on cage resistance and form stability.
Cages: Available in pressed steel, machined brass, and machined brass without rivets.

Load Ratings

Dynamic Load: For non-locating bearings (N, NU), P = Fr. For bearings with flanges, P = X Fr + Y Fa when Fa/Fr > e.
Static Load: Po = Fr for statically loaded bearings.

Prefix/Suffix and Bearing Tables
Bearings are identified by specific prefixes and suffixes indicating features like radial clearance, snap ring presence, and cage material. Detailed tables provide dimensions, load capacities, and speed ratings for various bearing types.

Overview
This document provides detailed specifications and descriptions of various types of cylindrical and thrust ball bearings. It includes dimensions, weight, load capacities, speed ratings, and specific features of each bearing type.

1. Special Cylindrical Bearings
The document lists special cylindrical bearings with their dimensions in both metric and imperial units. Key specifications include dynamic and static load capacities, speed limits for oil and grease lubrication, and specific design features such as full complement, snap rings, and special inner rings.

2. Standard Cylindrical Bearings
Similar to the special bearings, standard cylindrical bearings are detailed with their dimensions, load capacities, and speed ratings. The document highlights features like outer ring flanges and snap rings.

3. Thrust Ball Bearings
Product Overview: Thrust ball bearings are designed to support high axial loads in one direction and cannot handle radial loads. They are separable, allowing for easy assembly.
Design: These bearings consist of a shaft washer, housing washer, balls, and a cage thrust assembly.
Tolerances: Manufactured in NORMAL precision class according to ISO 492 and ISO 199 standards.

4. Bearing Features
The document provides tables of normal tolerances for thrust bearings, including bore diameter, outer diameter, and bearing width. It specifies the permissible deviations in micrometers for different size ranges.

5. Misalignment
Thrust ball bearings with flat housing washers do not allow for angular misalignment between the support surfaces in the housing and on the shaft.

Thrust Ball Bearings

Misalignment: No misalignment between the shaft and housing is allowed.
Speed: Suitable for low and medium speeds; ISO15312 does not specify speed references.
Cages: Typically fitted with pressed steel cages.
Loads: Can only support pure axial loads, with equivalent dynamic and static bearing loads defined as P = Fa and P0 = Fa, respectively.

Clutch Release Bearings

Description: Self-aligning bearings designed to manage clutch conditions related to component misalignment. Operate against the clutch spring to connect/disconnect the engine from the transmission, controlled by the clutch pedal.
Design: Allows maximum speeds at maximum loads with a long lifespan. Features anti-rotation to prevent damage in constant running applications.
Features: Includes two thrust-race rings, ball assembly, sheet-steel retainer, axial inner ring, and multipurpose grease for life lubrication.

Dimensions and Specifications

Tables provide detailed dimensions, references, and weights for both thrust ball bearings and clutch release bearings.

Catalog excerpts

A&S HÎJ Bearings 06/ Cylindrical roller bearings Rodamientos cilindricos v.

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Cylindrical roller bearings Rodamientos cilindricos 6.1/ Standard cylindrical bearings Rodamientos cilindricos estndar 249 6.2/ Special cylindrical bearings Rodamientos cilindricos especiales 261 PI

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6.1 Standard cylindrical bearings Rodamientos cilfndricos estndar Product Overview Introduccin Description / Descripciⴴn Design / Diseno 250 250 250 Bearing Features Caracterfsticas del Rodamiento Tolerances / Tolerancias Misalignement / Desalineacin Internai clearance / Juego Interno Speed / Velocidad Cages / Jaulas Load rating / Cargas Preffix/Suffix / Prefijos/Sufijos 252 252 254 254 254 254 255 255 Bearing Tables Tablas de Rodamientos 256 AsS Fersa Bearings

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6.1 Standard cylindrical bearings / Rodamientos cilndricos estndar Introduccin Product overview / Description Cylindrical roller bearings feature high radial load capacity due to the fact that raceways and rollers are in linear contact. These bearings are well-suited for applications requiring heavy radial and impact loading. They are also appropriate for high-speed apͭplications, in that they can be machined very precisely due to their structure. Both inner or outer rings could be separated, which makes the assembly or disassem-bly easier. An interference assembly is also possible. Design The...

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A&sFersa8 Bearings K^Sll N-type bearings have the following features: Caractersticas de los rodamientos tipo N: Two-flanged inner rings. Flat outer ring. Separable components. Adjustment with interference is possible. Dos pestanas de aro interior. Sin pestana en el aro exterior. Componentes desmontables. Ajuste con interferencia es posible. Both NU and N executions exhibit their best performance when used as free side bearings since they adjust to the shaft's axial move-ment relative to the housing position. NUP-type bearings have the following features: - Two-flanged outer ring. - One-flanged...

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6.1 SUnlant cjlrWtto»! bnttigi / RcdamNntoa elfndrfco» Mllna» The NUP bearings can carry a certain degree of axial loads in both directions. NJ-type bearings hve the following features: - Two-flanged outer ring. - One-flanged inner ring. Los rodamientos NUP pueden soportar un cier-to grado de carga axial en ambos sentidos. de los rode/nient - Dos pestaras en el aro exterior. - Une pestana en el aro interior. The NJ bearings can withstand axial load in just one direction. Fersa also manufactures special⯯y designed cylindrical roller bearings: The A type, and NR type characteristics are: - Similar...

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6.1 Standard cylindrical bearings / Rodamientos cilfndricos standard Misalignment Fersa produces cylindrical roller bearings with modified geometry to minimize contact stresses between rollers and ring raceways. The ability of single row cylindrical roller bear-ings to accommodate angular misalignment of the inner ring with regards to the outer ring is limited between 2 and 4 angular minutes, depending also on bearing type and specification. Internai clearance Fersa single row cylindrical roller bearings are manufactured with normal radial clearance as standard, but most of the references are...

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A&sFersa8 Bearings K^Sll Equivalent dynamic bearing load When cylindrical roller bearings are used as non-locating bearings, type N, NU, they are unable to support any thrust loads, therefore the applicable formula is: Carga dinmica equivalente del rodamiento Cuando los rodamientos de rodillos cilndricos se usan como rodamientos libres, tipo N, NU, ya que no pueden soportar cargas axiales, la formula aplicable es: P = Fr En el caso de los rodamientos con pestanas en aros interiores o exteriores, la carga din⮢mica equivalente del rodamiento debe calcularse como se detalla a continuaciʹn: P = Fr cuando...

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6.2 Spcial cylindrical bearings Rodamientos cilndricos especiales Fersa is capable of designing, developing and Fersa es capaz de disenar, desarrollar y fabricar manufacturing cylindrical bearings according rodamientos de rodillos cilindricos de acuerdo to any client specifications (dimensions, toler- a cualquier especificaci鮴n del cliente (dimen- ances, radii...). These are called special bear- siones, tolerancias, radios...). Son los llamados ing series. rodamientos de series especiales Tablas de Rodamientos 262 A&S Fersa PI Bearings

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A&sFersa8 Bearings K^Sll Type / Tipo B B B B --- 1 D E F G H FLANGE 0 LOAD / CARGA (kN) SPEED / VELOCIDAD (rpm) TYPE REFERENCES REMARK / NOTA 0 VALONA DYNAMIC / DINMICA STAJIC / OIL / ACEITE GREASE / TIPO REFERENCIAS C Co na ng --- 33,3 25,9 16000 13000 D F 19055 Sp©cial type NJ / Tipo especial NJ --- 38,3 40,4 10000 8000 F F 19032 Full complement without outer ring / Relleno de rodillos sin anillo exterior 50,6 48,0 13000 10000 D F 19004 Special type NUP / Tipo especial NUP - 44,0 48,0 13000 10000 A F 19023 Snap ring in 0 D / Ranura en el aro exterior ח 47,4 42,0 13000 10000 D F 19029 Special...

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A&sFersa8 Bearings K^Sll Type / Tipo B - S S b ?77zk "D B B 3 a -ol Q Si S d e f g h FLANGE 0 LOAD / CARGA (kN) SPEED / VELOCIDAD (rpm) TYPE REFERENCES REMARK / NOTA 0 VALONA DYNAMIC / DINMICA STAJIC / OIL / ACEITE GREASE/ TIPO REFERENCIAS C Co na ... 124,2 104,0 5000 4000 A F 19006 Full compl©ment + Snap ring in 0 D Relleno de rodillos + Anillo elstico en 0 D ... 143,8 136,5 5000 4000 D F 19013 Full Complement + Special Inner Ring/ Relleno de rodillos + Anillo interior especial ... 124,3 110,2 8000 6000 E F 19033 Internal snap ring / Anillo elstico interior ... 106,0 97,3 8000 6000 E F 19034...

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::A&sFersa8 Bearings K^Sll Type / Tipo B 77777/ ?777f/ "D _ 1 B 3 a -ol Q Si S D E F G H FLANGE 0 LOAD / CARGA (kN) SPEED / VELOCIDAD (rpm) TYPE REFERENCES REMARK / NOTA 0 VALONA DYNAMIC / STATIC / OIL / ACEITE GREASE / TIPO REFERENCIAS DINMICA ESTTICA GRASA C Co na ng 116,000 114,4 108,0 6000 5000 B F 19011 Outer Ring Flanged / Anillo exterior con pestana --- 150,9 154,0 6000 5000 A F 19042 Snap ring in 0 D / Ranura en el aro exterior --- 143,8 144,4 6000 5000 D F 19047 Special Outer Ring in Type NUP 127,5 137,2 6000 5000 C F 19016 Special without outer ring / Especial sin anillo exterior 127,5...

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Cylindrical And Thrust Ball Bearings

Cylindrical And Thrust Ball Bearings

Catalog excerpts

All A&S Fersa catalogs and technical brochures