Product details from catalogue Inquiry

Drawings:

B7228-C-T-P4S-UL FAG

Spindle bearings B72..-C, adjusted, in pairs or sets, contact angle ? = 15°, restricted tolerances

Replacements: B7228C.T.P4S.UL, B7228C.TPA.P4.UL


d Bore diameter 140 mm
D Outside diameter 250 mm
B Width 42 mm
Cr Basic dynamic load rating, radial 224.000 N
C0r Basic static load rating, radial 164.000 N
Cur Fatigue load limit, radial 12.500 N
nG Grease Limiting speed for grease lubrication 5.000 1/min
nG Oil Limiting speed for oil lubrication 7.500 1/min
≈m Weight 7,736 kg
da Diameter shaft shoulder 163 mm
da Diameter shaft shoulder clearance h12
Da Shoulder diameter outer ring 226,5 mm
Da Shoulder diameter outer ring clearance H12
ra max Maximum recess radius 2,5 mm
ra1 max Maximum recess radius 2,5 mm
Etk min Minimum diameter injection pitch 175,9 mm
Etk max Maximum diameter injection pitch 187 mm
Etk1 min Minimum diameter injection pitch 175,9 mm
Etk1 max Maximum diameter injection pitch 187 mm
a Distance between the apexes of the pressure cones 47,1 mm
rmin Minimum chamfer dimension 3 mm
r1 min Minimum chamfer dimension 3 mm
α Contact angle 15 °
Tmin Operating temperature min. -30 °C
Tmax Operating temperature max. 100 °C
FV L Preload force light 1.353 N
FV M Preload force medium 4.185 N
FV H Preload force heavy 8.302 N
KaE L Lift-off force light 4.158 N
KaE M Lift-off force medium 13.825 N
KaE H Lift-off force heavy 29.200 N
ca L Axial rigidity light 155 N/µm
ca M Axial rigidity medium 257 N/µm
ca H Axial rigidity heavy 362 N/µm
Contact angle Contact angle 15° C
Lubricant Without
Sealing Without
Outer shape Standard
Cage Laminated fabric cage T
Tolerance class tolerance class P4S, FAG standard better than P4 to DIN 620 P4S
Arrangement bearing set Single bearing U
Preload preload light L