SKF NRT 150 B Axial-radial cylindrical roller bearings, super-precision

SKF NRT 150 B Axial-radial cylindrical roller bearings, super-precision
Axial-radial cylindrical roller bearings, super-precision

Tolerances: tablePermissible moment load: diagramAccuracy of seats and abutments: shaft seats, housing seats

d		150	mm
D		240	mm
H		40	mm
d1		214	mm
C		12	mm
H1		26	mm
J		165	mm
J1		225	mm
N		7	mm
N1		11	mm
N2		7	mm
a		6.2	mm
r1	min.	0.6	mm
r2	min.	0.3	mm

Calculation data

Basic dynamic load rating - radial direction	C		67.1	kN
Basic static load rating - radial direction	C0		160	kN
Basic dynamic load rating - axial direction	C		75	kN
Basic static load rating - axial direction	C0		490	kN
Attainable speed for grease lubrication			210	r/min
Attainable speed for oil-air lubrication			420	r/min
Axial preload			2.3	kN
Axial unloading force			4.9	kN
Frictional moment	CRL		12	N·m
Axial stiffness			9.2	kN/µm
Radial stiffness			5.5	kN/µm
Moment stiffness			36	kN·m/mrad

Mass

Mass bearing

5.6

kg

Rotary table

Guideline diameter

350

mm

Mounting information

Retaining bolts
Size			M6
Number of bolts			2
Angle between bolts			180	°
Removal threads
Size	G		M8
Number of threads			3
Angle between threads			120	°
Required attachment bolts, shaft
Bolt size			M6
Pitch	α		10	°
Number of bolts			34
Number of bolts omitted at retaining bolts position			2, 180° apart
Tightening torque (Bolt grade 10.9)			14	N·m
Required attachment bolts, housing
Bolt size			M6
Pitch	α		10	°
Number of bolts			33
Number of bolts omitted at removal thread position			3, 120° apart

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