SKF BTW 90 CTN9/SP Angular contact thrust ball bearings, double direction, super-precision

SKF BTW 90 CTN9/SP Angular contact thrust ball bearings, double direction, super-precision
Angular contact thrust ball bearings, double direction, super-precision

Tolerances: P4C, SP, UP, Chamfer dimensionsRecommended shaft and housing fits: shafts, housingsValues for ISO tolerance classes: shafts, housingsSpeed dependent initial grease fill → Initial grease fill

d		90	mm
D		140	mm
H		60	mm
d1		118.9	mm
2C		30	mm
r1,2	min.	1.5	mm
r3,4	min.	0.6	mm

Abutment dimensions

da	min.	109	mm
Da	min.	130.9	mm
Da	max.	132	mm
ra	max.	1.5	mm
rb	max.	0.6	mm

Calculation data

Basic dynamic load rating	C		55.9	kN
Basic static load rating	C0		173	kN
Fatigue load limit	Pu		7.65	kN
Attainable speed for grease lubrication			5000	r/min
Attainable speed for oil-air lubrication			6000	r/min
Preload			625	N
Static axial stiffness			792	N/µm
Reference grease quantity	Gref		14.4	cm³

Mass

Mass bearing

2.7

kg

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