120TAC20F

Angular Contact Thrust Ball Bearings (NSKTAC F Series)

120TAC20F

Angular Contact Thrust Ball Bearings (NSKTAC F Series)

Images shown are representations. Designs and specifications may differ from actual products.

Designations

120TAC20F

Boundary Dimensions

d 120 mm Bore diameter
D 180 mm Outside diameter
T 72 mm Inner Ring Width
C 36 mm Outer Ring Width
r(min.) 2 mm Chamfer Dimension
r1(min.) 1 mm Chamfer Dimension

Basic Load Ratings

Ca 98.5 kN Basic Dynamic Load Rating
C0a 325 kN Basic Static Load Rating

Speeds

Grease 3000 min-1 Limiting Speed (EL-Preload)
Oil (Oil-air) 3300 min-1 Limiting Speed (EL-Preload)
Grease 2600 min-1 Limiting Speed (L-Preload)
Oil (Oil-air) 2900 min-1 Limiting Speed (L-Preload)

Dimensions

50° Contact Angle

Abutment and Fillet Dimensions

ra(max.) 2 mm Radius of Shaft or Housing Fillet
rb(max.) 1 mm Radius of Shaft or Housing Fillet
da 144 mm Diameter of Shaft Abutment
Da 168 mm Diameter of Housing Abutment

Performance

Pa 49.0 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1005N 954N/μm -5μm
L 4189N 1551N/μm -15μm

Additional information

12 g/brg Recommended Grease Quantities

Holes Dimensions

W 14 mm Oil Groove Width
m 4 Number of Holes
L 6 mm Notch Width

Mass

2.63 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACTBB_TAC_F
NSK Product Type Super Precision Bearing
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