170TAC20X+L

Double-Direction Angular Contact Thrust Ball Bearings (NSKTAC D Series )

170TAC20X+L

Double-Direction Angular Contact Thrust Ball Bearings (NSKTAC D Series )

Grouped product items
Parts Number
170TAC20XMYPN7+LC6
170TAC20XMYPN7+LC7
170TAC20XMYPN7+LC8

Designations

170TAC20X+L

Boundary Dimensions

d 170 mm Bore diameter
D 260 mm Outside diameter
T 108 mm Inner Ring Width
C 54 mm Outer Ring Width
r(min.) 2.1 mm Chamfer Dimension
r1(min.) 1.1 mm Chamfer Dimension

Basic Load Ratings

Ca 274 kN Basic Dynamic Load Rating
C0a 810 kN Basic Static Load Rating

Speeds

Grease 2100 min-1 Limiting Speed (C6-Preload)
Oil (Oil-air) 2400 min-1 Limiting Speed (C6-Preload)
Grease 1800 min-1 Limiting Speed (C7-Preload)
Oil (Oil-air) 2100 min-1 Limiting Speed (C7-Preload)
Grease 1500 min-1 Limiting Speed (C8-Preload)
Oil (Oil-air) 1700 min-1 Limiting Speed (C8-Preload)

Dimensions

60° 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 206 mm Diameter of Shaft Abutment
Da 245 mm Diameter of Housing Abutment

Performance

Pa 497 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
C6 2078N 1650N/μm -6μm
C7 6745N 2451N/μm -15μm
C8 13736N 3119N/μm -25μm

Additional information

79 g/brg Recommended Grease Quantities

Mass

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