Width:31 mm
Bore diameter:60 mm
Outside diameter:130 mm
Limiting speed:7000 r/min
Reference speed:11000 r/min
Mass bearing 1.72kg
Mass bearing 0.62 kg
Width:23 mm
Bore diameter:40 mm
Outside diameter:90 mm
Limiting speed:10000 r/min
Reference speed:9500 r/min
Mass bearing 1.83kg
Width:42.25 mm
Bore diameter:50 mm
Outside diameter:110 mm
Limiting speed:6300 r/min
Reference speed:4800 r/min
Mass bearing 1.83kg
Width:42.25 mm
Bore diameter:50 mm
Outside diameter:110 mm
Limiting speed:6300 r/min
Reference speed:4800 r/min
�Features
a�Lower speed than the ball bearing with the same dimension
b�High precision
c�Low noise and small vibration
d�Mainly withstand radial load
e�Can withstand a litter axial load if outer ring and inner ring have ribs
�Designs
Cylindrical roller bearings are available in many designs, series and sizes. The majority are single row bearings with a cage. High-capacity bearings, single and double row full complement bearings (without a cage) complete the standard assortment listed in this catalogue.
Double row cylindrical roller bearings mainly in the NNU design and the NN design(fig 2). The bearings are separable, i.e. the ring with integral flanges together with the roller and cage assemblies can be mounted separately from the other bearing ring or all bearing components can be mounted separately. This facilitates the mounting, inspection and maintenance of these bearings.
[Features]
Angular contact ball bearings have raceways in the inner and outer rings that are displaced with respect to each other in the direction of the bearing axis. This means that they are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.The axial load carrying capacity of angular contact ball bearings increases with increasing contact angle.
[Single row angular contact ball bearings]
Single row angular contact ball bearings can accommodate axial loads acting in one direction only. A single row bearing is typically adjusted against a second bearing.
The standard assortment of single row angular contact ball bearings comprises bearings in the 72 B(E) and 73 B(E) series. Some sizes in the 70 B series are also available.
[Double row angular contact ball bearings]
Double row angular contact ball bearings correspond in design to two single row angular contact ball bearings arranged back-to-back, but take up less axial space. They can accommodate radial loads as well as axial loads acting in both directions. They provide stiff bearing arrangements and are able to accommodate tilting moments.
The standard assortment of double row angular contact ball bearings comprises bearings in the 32 A, 33 A and 33 D series.
[Four point contact ball bearings]
Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads acting in both directions. For a given axial load, a limited radial load can be supported. These bearings take up considerably less axial space than double row bearings.
Width:21 mm
Bore diameter:35 mm
Outside diameter:80 mm
Limiting speed:12000 r/min
Reference speed:19000 r/min
Mass:0.46kg
Introduction About Deep-groove ball bearings
Deep groove ball bearings have deep, uninterrupted raceway grooves. These raceway grooves have a close osculation with the balls, enabling the bearings to accommodate radial and axial loads in both directions. These bearings are particularly versatile and are:
simple in design
non separable
suitable for high and even very high speeds
robust in operation, requiring little maintenance
Deep groove ball bearings are the most widely used bearing type. Consequently, they are available from SKF in many designs, variants, series and sizes.
Deep groove ball bearings are available for shaft diameters ranging from 3 to 1500 mm.Â
They are available in three performance classes:
a.standard bearings for high qualityÂ
b.Explorer bearings for high-load carrying capacity
c.Energy Efficient (E2) bearings for energy efficiency
For specific applications, It also including:Â
bearings for extreme temperatures
DryLube bearings
bearings with Solid Oil
insulated bearings
polymer bearings
NoWear coated bearings
sensor bearing units
6316
Dimensions
d 80 mm
D 170 mm
B 39 mm
d 1 â?? 108 mm
D 2 â?? 146.9 mm
r 1,2 min. 2.1 mm
Abutment dimensions
d a min. 92 mm
D a max. 158 mm
r a max. 2 mm
Calculation data
Basic dynamic load rating C 130 kN
Basic static load rating C 0 86.5 kN
Fatigue load limit P u 3.25 kN
Reference speed 8500 r/min
Limiting speed 5300 r/min
Calculation factor k r 0.03
Calculation factor f 0 13.3
Mass
Mass bearing 3.63 kg
7200 ACD/P4A
Dimensions
d 10 mm
D 30 mm
B 9 mm
d 1 17.3 mm
d 2 17.3 mm
D 1 23.1 mm
r 1,2 min. 0.6 mm
r 3,4 min. 0.3 mm
a 9.3 mm
Abutment dimensions
d a min. 14.2 mm
d b min. 14.2 mm
D a max. 25.8 mm
D b max. 27.6 mm
r a max. 0.6 mm
r b max. 0.3 mm
d n 18.3 mm
Calculation data
Basic dynamic load rating C 4.36 kN
Basic static load rating C 0 1.86 kN
Fatigue load limit P u 0.078 kN
Attainable speed for grease lubrication 53000 r/min
Attainable speed for oil-air lubrication 80000 r/min
Ball diameter D w 4.762 mm
Number of balls z 10
Reference grease quantity G ref 0.357 cm�³
Preload and stiffness (back-to-back, face-to-face)
Preload class A G A 27 N
Static axial stiffness, preload class A 35 N/�µm
Preload class B G B 54 N
Static axial stiffness, preload class B 45 N/�µm
Preload class C G C 108 N
Static axial stiffness, preload class C 59 N/�µm
Preload class D G D 216 N
Static axial stiffness, preload class D 78 N/�µm
Calculation factors
Calculation factor f 1.02
Calculation factor f 1 0.99
Calculation factor f 2A 1
Calculation factor f 2B 1.01
Calculation factor f 2C 1.02
Calculation factor f 2D 1.05
Calculation factor f HC 1
Calculation factor e 0.68
Calculation factor (single, tandem) Y 2 0.87
Calculation factor (single, tandem) Y 0 0.38
Calculation factor (single, tandem) X 2 0.41
Calculation factor (back-to-back, face-to-face) Y 1 0.92
Calculation factor (back-to-back, face-to-face) Y 2 1.41
Calculation factor (back-to-back, face-to-face) Y 0 0.76
Calculation factor (back-to-back, face-to-face) X 2 0.67
Mass
Mass bearing 0.032 kg
[Features]
Spherical roller bearings have two rows of rollers, a common spherical outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis. The centre point of the sphere in the outer ring raceway is at the bearing axis. Therefore, the bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. Spherical roller bearings are designed to accommodate heavy radial loads, as well as heavy axial loads in both directions.
[Factors that influence spherical roller bearing performance]
Bearing performance is not only determined by load or speed ratings. There are a number of other factors that contribute to bearing performance. To a large extent, performance is influenced by the geometry of the rollers, raceways and cages, the heat treatment, as well as the surface finish of all contact surfaces.
Main factors which influence spherical roller bearing perf ormance include, but are not limited to:
Symmetrical rollers
Roller tolerances
Special roller profile
[Applications]
Paper machinery, reducer, axle of railway vehicle, bearing seat of rolling mill gearbox, roller of rolling machine, crusher, vibrating screen, printing machine, woodworking machine, all kinds of industrial reducer
Width:40 mm
Bore diameter:90 mm
Outside diameter:160 mm
Limiting speed:5300 r/min
Reference speed:3800 r/min
Mass bearing 3.35kg
Width:12 mm
Bore diameter:12 mm
Outside diameter:19 mm
Limiting speed:30000 r/min
Reference speed:26000 r/min
Deep groove ball bearings are particularly versatile. They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available in many designs, variants and sizes.
Width:14 mm
Bore diameter:20 mm
Outside diameter:47 mm
Limiting speed:20000 r/min
Reference speed:32000 r/min
Mass:0.1kg
Deep groove ball bearings are particularly versatile. They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available in many designs, variants and sizes.
Width:23 mm
Bore diameter:40 mm
Outside diameter:90 mm
Limiting speed:11000 r/min
Reference speed:17000 r/min
Mass bearing 0.63kg
Thrust ball bearings are produced as single direction or double direction thrust ball bearings. They are designed to accommodate axial loads only and must not be subjected to any radial load.Â
Thrust ball bearings are separable, i.e. the shaft washer, housing washer(s), ball and cage assembly(s) can be mounted separately. Shaft washers have a ground bore to enable an interference fit. The bore of the housing washer is turned and always larger than the shaft washer bore.
Single direction thrust ball bearings consist of a shaft washer, a housing washer and a ball and cage assembly. As their name implies, single direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in one direction only.
Double direction thrust ball bearings consist of one shaft washer, two housing washers and two ball and cage assemblies.Â
The housing washers and ball and cage assemblies are identical to those found in single direction bearings. Double direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in both directions.
Width:53 mm
Bore diameter:110 mm
Outside diameter:200 mm
Limiting speed:4000 r/min
Reference speed:3000 r/min
Mass bearing 7kg
Features
To bear predominate radial load and subsidiary axial load from both directions, lower cost and price, low running resistance, high limiting speed, possible to reach higher rotating precision and pretty low vibration level, in addition, possible to make into sealing structure.
Applications
Electric motors, machine tools, automobiles, precise devices, home appliances, chemical machinery, general machinery, agricultural machinery, etc.
Features
a.high speed, high precision
b.high rigidity, stand impact and vibration
c.can withstand big axial load
This bearing is suitable to bear composite load of axial load and radial load. Normally radial load is predominant but for great taper angle bearing the axial load could be predominant.Â
Taper roller bearing is a separable bearing. Its outer ring can be mounted individually from the unit of inner ring, cage and rollers. Its radial and axial internal clearance can be adjusted during installation; even can be a interference installation. For taper roller bearing stamped steel cage is common selection. For large size bearing, welded steel cage or pin-assembled cage is used.
Applications
Hob bearing of truck, shaft of large machine tool, wheel shaft box, large reducer, bearing of rollers of steel mill, etc.
Classification
Single-row tapered roller bearings accommodate radial and axial loads (in one direction). For technical reasons, they are always positioned against a second tapered roller bearing in a mirror arrangement.
Double-row tapered roller b earings accommodate radial and axial loads (in both directions) and are available in metric or inch sizes. The axial play of the bearing pair is determined during bearing production. There are numerous applications in industry and in the automotive sector.
Four-row tapered roller bearings are used in rolling mills for the steel and non-ferrous industry sectors. These bearings are designed for extremely high radial and axial loads as well as for high speeds and impact loads and are used in extremely unfavorable ambient conditions such as high temperatures, water and contamination. With the new Performance series for rolling mills, costs can be significantly reduced from a TCO perspective.
Spherical roller bearings have two rows of rollers, a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis. The centre point of the sphere in the outer ring raceway is at the bearing axis. Therefore, the bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. Spherical roller bearings are designed to accommodate heavy radial loads, as well as heavy axial loads in both directions.
Factors that influence spherical roller bearing performance
Bearing performance is not only determined by load or speed ratings. There are a number of other factors that contribute to bearing performance. To a large extent, performance is influenced by the geometry of the rollers, raceways and cages, the heat treatment, as well as the surface finish of all contact surfaces.
Main factors which influence spherical roller bearing performance include, but are not limited to:
Symmetrical rollers
Roller tolerances
Special roller profile
Features
Self-aligning ball bearing was has two rows of balls and a common sphered raceway in the outer ring. The bearings are consequently self-aligning and insensitive to shaft deflections and angular misalignment of the shaft relative to the housing. Additionally, self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds.
Design
Self-aligning ball bearings are available in several designs, including:
a. Open, basic design, bearings
b. Sealed, with contact seals on both sides
c. Open bearings with an extended inner ring
Application
heavy load and impact load machines, Precision instruments, low noise motors, automobiles, motorcycles, metallurgy, rolling mills, mines, petroleum, paper-making, cement, sugar-refining,etc.
51100 thrust ball bearing
[Features]
Thrust ball bearings are produced as single direction or double direction thrust ball bearings. They are designed to accommodate axial loads only and must not be subjected to any radial load.Â
Thrust ball bearings are separable, i.e. the shaft washer, housing washer(s), ball and cage assembly(s) can be mounted separately. Shaft washers have a ground bore to enable an interference fit. The bore of the housing washer is turned and always larger than the shaft washer bore.
[Classifications]
a.Single direction thrust ball bearings consist of a shaft washer, a housing washer and a ball and cage assembly. As their name implies, single direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in one direction only.
b.Double direction thrust ball bearings consist of one shaft washer, two housing washers and two ball and cage assemblies.Â
The housing washers and ball and cage assemblies are identical to those found in single direction bearings. Double direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in both directions.
d=10 mm, D=24mm, B=9mm
Mass: 0.02kg
2210 ETN9
ã�Featuresã
Self-aligning ball bearing has two rows of balls and a common spherical raceway in the outer ring. The bearings are consequently self-aligning and insensitive to shaft deflections and angular misalignment of the shaft relative to the housing. Additionally, self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds.
Self-aligning ball bearings are available with either a cylindrical or tapered bore. Bearings with a tapered bore can be mounted directly on a shaft or on an adapter or withdrawal sleeve.
Self-aligning ball bearings are available in several designs, including:
a. Open, basic design, bearings
b. Sealed, with contact seals on both sides
c. Open bearings with an extended inner ring
ã�Applicationã
heavy load and impact load machines, Precision instruments, low noise motors, automobiles, motorcycles, metallurgy, rolling mills, mines, petroleum, paper-making, cement, sugar-refining,etc.
Dimensions
d 50 mm
D 90 mm
B 23 mm
d1 61.47 mm
D1 80.2 mm
â?º
7204 BEP
Dimensions
d 20 mm
D 47 mm
B 14 mm
d 1 â?? 30.8 mm
d 2 â?? 25.87 mm
D 1 â?? 37 mm
a 21 mm
r 1,2 min. 1 mm
r 3,4 min. 0.6 mm
Abutment dimensions
d a min. 25.6 mm
D a max. 41.4 mm
D b max. 42.8 mm
r a max. 1 mm
r b max. 0.6 mm
Calculation data
Basic dynamic load rating C 13.3 kN
Basic static load rating C 0 7.65 kN
Fatigue load limit P u 0.325 kN
Reference speed 19000 r/min
Limiting speed 18000 r/min
Calculation factor A 0.00113
Calculation factor k r 0.095
Calculation factor e 1.14
Single bearing or bearing pair arranged in tandem
Calculation factor X 0.35
Calculation factor Y 0 0.26
Calculation factor Y 2 0.57
Bearing pair arranged back-to-back or face-to-face
Calculation factor X 0.57
Calculation factor Y 0 0.52
Calculation factor Y 1 0.55
Calculation factor Y 2 0.93
Mass
Mass bearing 0.11 kg
Width:21 mm
Bore diameter:35 mm
Outside diameter:80 mm
Limiting speed:10000 r/min
Reference speed:11000 r/min
Mass bearing 0.45kg
Width:51 mm
Bore diameter:70 mm
Outside diameter:150 mm
Limiting speed:4500 r/min
Reference speed:3400 r/min
Mass bearing 4.45 kg
H 3128
Dimensions
d 1 125 mm
d 140 mm
d 3 180 mm
B 1 97 mm
B 22 mm
B 4 24 mm
G M 140x2
Mass
Mass adapter sleeve assembly 4.1 kg
Included products
Lock nut KM 28
Locking device MB 28
Associated products
Hydraulic nut HMV 28 E
Width:23 mm
Bore diameter:40 mm
Outside diameter:90 mm
Limiting speed:9500 r/min
Reference speed:8000 r/min
Mass bearing 0.67kg
30206
Dimensions
d 30 mm
D 62 mm
T 17.25 mm
d 1 â?? 45.3 mm
B 16 mm
C 14 mm
r 1,2 min. 1 mm
r 3,4 min. 1 mm
a 13.643 mm
ã?�Featuresã??Â
aã?�high speed, high precision
bã?�high rigidity, stand impact and vibration
cã?�can withstand big axial load
This bearing is suitable to bear composite load of axial load and radial load. Normally radial load is predominant but for great taper angle bearing the axial load could be predominant.Â
Taper roller bearing is a separable bearing. Its outer ring can be mounted individually from the unit of inner ring, cage and rollers. Its radial and axial internal clearance can be adjusted during installation; even can be a interference installation. For taper roller bearing stamped steel cage is common selection. For large size bearing, welded steel cage or pin-assembled cage is used.
ã?�Applicationsã??
Hob bearing of truck, shaft of large machine tool, wheel shaft box, large reducer, bearing of rollers of steel mill, etc.
