Angular contact ball bearings, super-precision S71902 ACD/P4A
Bearing number : S71902 ACD/P4A
Size (mm) : 15x28x7
Brand : SKF
Bore Diameter (mm) : 15
Outer Diameter (mm) : 28
Width (mm) : 7
Bearing dimensions and specification in SKF catalogue:
d - 15 mm
D - 28 mm
B - 7 mm
d1 - 18.9 mm
d2 - 18.9 mm
D2 - 25.8 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.2 mm
a - 8.5 mm
da - min. - 17 mm
da - max. - 18.5 mm
db - min. - 17 mm
db - max. - 18.5 mm
Da - max. - 26 mm
Db - max. - 26.6 mm
ra - max. - 0.3 mm
rb - max. - 0.2 mm
Basic dynamic load rating - C - 3.8 kN
Basic static load rating - C0 - 1.8 kN
Fatigue load limit - Pu - 0.078 kN
Limiting speed for grease lubrication - 50000 r/min
Ball - Dw - 3.969 mm
Ball - z - 13
Calculation factor - e - 0.68
Calculation factor - Y2 - 0.87
Calculation factor - Y0 - 0.38
Calculation factor - X2 - 0.41
Calculation factor - Y1 - 0.92
Calculation factor - Y2 - 1.41
Calculation factor - Y0 - 0.76
Calculation factor - X2 - 0.67
Preload class A - GA - 25 N
Preload class B - GB - 50 N
Preload class C - GC - 100 N
Preload class D - GD - 200 N
Calculation factor - f - 1.05
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.08
Calculation factor - f2D - 1.14
Calculation factor - fHC - 1
Preload class A - 40 N/micron
Preload class B - 51 N/micron
Preload class C - 67 N/micron
Preload class D - 88 N/micron
Mass bearing - 0.016 kg
What are the best brands of ball bearings? - Quo
Certain brand is good in particular type of bearings, for example: SKF is good in spherical roller ( their invention), Timken is good in tapered roller (also their invention), Schaeffler group is good in needle rollers and NSK is good in precision ball bearings. it's difficult to single out best ball bearings brand nowadays.
SKF/FAG bearings | Adventure Rid
Order what l thought was a set of SKF bearings for my R100GS gearbox (was advertised as SKF) from a german company but have been sent a set of FAG bearings all look the same apart from the the bearing that sits behind the circlip groove on the output shaft (need to have one machined on mine) the old NTN bearing has 5 roller balls and the new FAG 6 smaller ones .
Skf S71902acd/p4a High Super Precision Angular Contact .
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SKF Bearings - Bearing Parts & Supplies - Grainger .
Ball bearings are used with applications that have high axial loads and low-to-moderate radial loads. Mounted bearings (bearing units) have a bearing inside a housing unit to ensure a secure fit and mount. Sleeve and clip bearings support high loads, have no moving parts, and require lubricant to allow the shaft to turn smoothly.
SKF front wheel bearing hub assemblies - any good? - Bob .
1. They are wrong. They market OEM and aftermarket, each has different performance criteria. They may have dropped what they called "value grade", but they are still marketing aftermarket hub bearings, and are working with China to source parts and hopefully source complete bearings.
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The SKF brand still stands for the very best in rolling bearings, but it now stands for much more. SKF – the knowledge engineering company 4. ... to Y-bearings and Y-bearing units. All the data required to select a Y-bearing or Y-bearing unit respectively are listed in the product tables.
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wheel bearings: Timken/Koyo vs SKF/BCA/Beck etc? | IH8MUD .
Clean it best you can, rinse it out, toss it in the dishwasher? I have a partswasher available. Packing is best done inside a ziplock sandwich bag. Grease and bearing go in, shove grease in one edge 'till it comes out the other all the way around. That's the best bearing packer I know of.
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SKF BR930473 Wheel Bearing and Hub Assembly ... For more than 100 years, the world's engineers, technicians and mechanics have turned to SKF for the best possible solutions. Available for a wide range of applications and needs, SKF bearings and seals are designed and manufactured to the highest quality standards, ensuring long life and safety. ...