Product Name |
1209 EKTN9 Self-aligning ball bearings |
Brand |
/TFN / OEM |
Model Number |
1209EKTN9
|
Ring Material |
Steel |
Cage Material |
Brass,Nylon,Steel |
Precision |
P0, P6, P5, or as requested |
Vibration |
ZV1, ZV2, ZV3, or as requested |
Clearance |
C0,C2,C3, or as requested |
Type |
SL series ,N series,NU series,NJ series,Nup series,NF series |
Features |
High load carrying capacity ,High stiffness,Accommodate axial displacement ,Low friction ,Long service life,Enhanced operational reliability ,Separable and interchangeable . |
Quality standard |
ISO9001:2000/ SGS |
Quality Control Process |
1.Assembly |
2.Windage test |
3.Cleaning |
4.Rotary test |
5.Greasing and gland |
6.Noise inspection |
7.Appearance inspection |
8.Rust prevention |
9.Product packaging |
Application |
cylindrical roller bearing is usually only subject to radial force. Compared with ball bearing of the same size, its radial bearing capacity is increased by 1.5-3 times. It is rigid and shock resistant. It is mainly used for large motor, machine tool spindle, engine front and rear support shaft, train bus axle, diesel engine crankshaft, automobile tractor gearbox, etc. |
DIMENSIONS
d |
45 mm
|
Bore diameter |
D |
85 mm
|
Outside diameter |
B |
19 mm
|
Width |
d1 |
≈ 57.51 mm
|
Shoulder diameter inner ring |
D1 |
≈ 72.5 mm
|
Shoulder diameter outer ring |
r1,2 |
min. 1.1 mm
|
Chamfer dimension |
Tapered bore, taper 1:12
|
ABUTMENT DIMENSIONS
Da |
max. 78 mm
|
Abutment diameter housing |
ra |
max. 1.1 mm
|
Fillet radius |
CALCULATION DATA
Basic dynamic load rating |
C |
22.9 kN
|
Basic static load rating |
C0 |
7.8 kN
|
Fatigue load limit |
Pu |
0.4 kN
|
Reference speed |
|
17 000 r/min
|
Limiting speed |
|
11 000 r/min
|
Permissible angular misalignment |
α |
2.5 °
|
Calculation factor |
kr |
0.04
|
Calculation factor |
e |
0.21
|
Calculation factor |
Y0 |
3.2
|
Calculation factor |
Y1 |
3
|
Calculation factor |
Y2 |
4.6
|
|