SKF NJ 308 ECM bearings
Cylindrical roller bearings, single row, SKF Explorer, Popular item

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SKF Cylindrical roller bearings, NJ design
Measurement system
Metric
Bore diameter
40.000 mm
Outside diameter
90.000 mm
Width
23.000 mm
Cr
93000 N
C0r
78000 N
Limiting speed
9500 r/min
Net weight
0.79 kgs
Number of rows
1
Sealing
Without
Cage
Brass
Bore type
Cylindrical
Outer diameter type
Cylindrical
Bearing material
Steel
Rolling material
Steel
Tolerance class
P6 running accuracy, Normal dimensional
Internal clearance
CN
Lubricant in bearing
None
Relubrication feature
None

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Technical specification for SKF NJ 308 ECM

Part Number NJ 308 ECM
Brand SKF
Description Cylindrical roller bearings, single row, SKF Explorer, Popular item
M : Machined brass cage, rolling element centred
DIMENSIONS
d 40.0 mm Bore diameter
D 90.0 mm Outside diameter
B 23.0 mm Width
d1 57.5 mm Shoulder diameter of inner ring
D1 75.18 mm Shoulder diameter of outer ring
F 52.0 mm Chamfer dimension of loose flange ring
r1,2 min 1.5 mm Chamfer dimension
r3,4 min 1.5 mm Chamfer dimension
smax. 1.4 mm Permissible axial displacement
ABUTMENT DIMENSIONS
da min 48.0 mm Diameter of spacer sleeve
da max. 50.0 mm Diameter of spacer sleeve
db min 60.0 mm Diameter of shaft abutment
Da max 81.8 mm Diameter of housing abutment
ra max 1.5 mm Radius of fillet
CALCULATION DATA
C 93.0 kN Basic dynamic load rating
C0 78.0 kN Basic static load rating
Pu 10.2 kN Fatigue load limit
  8000.0 r/min Reference speed
  9500.0 r/min Limiting speed
kr 0.15 Minimum load factor
e 0.2 Limiting value
Y 0.6 Axial load factor
MASS
Mass 0.79 kgs Weight
SKF Cylindrical roller bearings, NJ design

SKF NJ 308 ECM, Cylindrical roller bearings, single row, SKF Explorer, Popular item, ID: 40.0mm, OD: 90.0mm, Width: 23.0mm, Basic dynamic load rating: 93.0kN, Static load rating: 78.0kN, Limiting speed: 9500.0r/min.

SKF NJ 308 ECM, M : Machined brass cage, rolling element centred.

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