MACHINE TOOL SPINDLE BEARINGS
Cylindrical Double Row - NN39 Series
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Notes:
- Ultra-clean steel delivers greater reliability and
increased life.
- Relieves edge loading in your application with shaft
misalignment.
- Tailors your bearing to your application
requirements.
- Proper clearance selection helps cylindrical roller
baring last longer and perform quieter.
- Increased capacity helps achieve additional bearing
life.
- Applications: gears and drives, pumps, traction
motors, blowers and fans, construction equipment,
crushers, calendar rolls, electric motors, plastics
machinery, and machine tools.
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CYLINDRICAL DOUBLE ROW - NN39 SERIES |
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Bore
"d"
(mm) |
OD
"D"
(mm) |
Width
"B"
(mm) |
Alpine Bearing
Part No. |
Load Ratings
kN |
Speed Ratings
RPM |
|
Cylindrical Bores |
Tapered Bores* |
Static |
Dynamic |
Oil |
Grease |
| 100 |
140 |
30 |
NN3920 |
NN3920K |
182 |
106 |
6700 |
6000 |
| 105 |
145 |
30 |
NN3921 |
NN3921K |
194 |
110 |
6300 |
5600 |
| 110 |
150 |
30 |
NN3922 |
NN3922K |
207 |
114 |
6300 |
5300 |
| 120 |
165 |
34 |
NN3924 |
NN3924K |
251 |
138 |
5600 |
5000 |
| 130 |
180 |
37 |
NN3926 |
NN3926K |
325 |
173 |
5300 |
4500 |
| 140 |
190 |
37 |
NN3928 |
NN3928K |
375 |
201 |
4800 |
4300 |
| 150 |
210 |
45 |
NN3930 |
NN3930K |
490 |
262 |
4500 |
3800 |
| 160 |
220 |
45 |
NN3932 |
NN3932K |
520 |
271 |
4300 |
3600 |
| 170 |
230 |
45 |
NN3934 |
NN3934K |
550 |
280 |
4000 |
3600 |
| 180 |
250 |
52 |
NN3936 |
NN3936K |
655 |
340 |
3800 |
3200 |
| 190 |
260 |
52 |
NN3938 |
NN3938K |
680 |
345 |
3600 |
3200 |
| 200 |
280 |
60 |
NN3940 |
NN3940K |
815 |
420 |
3400 |
3000 |
| 220 |
300 |
60 |
NN3944 |
NN3944K |
895 |
440 |
3000 |
2600 |
| 240 |
320 |
60 |
NN3948 |
NN3948K |
975 |
460 |
2800 |
2600 |
| 260 |
360 |
75 |
NN3952 |
NN3952K |
1,380 |
670 |
2600 |
2200 |
| 280 |
380 |
75 |
NN3956 |
NN3956K |
1,460 |
695 |
2400 |
2200 |
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CYLINDRICAL DOUBLE ROW - NN39 SERIES |
* Taper ratio - 1:12 |
