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Tapered bore
NSK Rolling Bearing
Super Precision Bearings
Cylindrical Roller Bearings
Double-Row Cylindrical Roller Bearings / Stiffness series
39 type
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CAD模型選擇
{nsk_rb/super_precision_bearings/cylindrical_roller_bearings/double_row_c_r_bearings_st_series/39_type/39_type_tr_asmtab.prj},{NB=NSK_NN3938MBKR},{IDNR=},{ORDER=NN3938MBKR},{SD=190},{D=260},{B=52},{R=2.0},{CR=345},{COR=680},{CCD=243.5},{MASS=7.570},{LG=3400},{LO=4000},{DH=4},{DHX=4.0},{W=8},{WX=8.0},{M=4},{MX=4},{SDE3=243.500},{X=4},{PPATH=../39_type_asmtpl.prj},{MDA=199},{D1A=203},{DAMAX=251},{DAMIN=246},{RA=2}
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LINA
明細表
ORDER
Bearing No.
ⁿ/ₐ
SD
[mm]
D
[mm]
B
[mm]
R
min.
[mm]
CR
Basic Dynamic Load Ratings
[kN]
COR
Basic Static Load Ratings
[kN]
CCD
Circumscribed Circle Diameter of Roller
[mm]
MASS
Mass
[kg]
LG
Limiting Speeds Grease
[min]
LO
Limiting Speeds Oil
[min]
DH
Diameter of oil hole
[mm]
W
Width of oil groove
[mm]
M
Number of oil hole
ⁿ/ₐ
MDA
min.
[mm]
D1A
min.
[mm]
DAMAX
DA
[mm]
DAMIN
DA
[mm]
RA
max.
[mm]
NN3920MBKR
NN3920MBKR
100
140
30
1.1
106
182
130.0
1.320
6300
7500
2
3.5
4
106.5
108
133.5
132
1
NN3921MBKR
NN3921MBKR
105
145
30
1.1
110
194
135.0
1.500
6000
7200
2.0
3.5
4
111.5
113
138.5
137
1
NN3922MBKR
NN3922MBKR
110
150
30
1.1
114
207
140.0
1.440
5800
7000
2
3.5
4
116.5
118
143.5
142
1
NN3924MBKR
NN3924MBKR
120
165
34
1.1
138
251
153.5
2.020
5300
6400
2.5
5
4
126.5
128
158.5
156
1
NN3926MBKR
NN3926MBKR
130
180
37
1.5
173
325
167.0
2.640
4900
5900
2.5
5
4
138
140
172
169
1.5
NN3928MBKR
NN3928MBKR
140
190
37
1.5
201
375
178.0
2.790
4600
5500
2.5
5
4
148
150
182
180
1.5
NN3930MBKR
NN3930MBKR
150
210
45
2.0
262
490
195.0
4.470
4200
5000
3
6
4
159
162
201
197
2
NN3932MBKR
NN3932MBKR
160
220
45
2.0
271
520
205.0
4.720
4000
4800
3
6
4
169
172
211
207
2
NN3934MBKR
NN3934MBKR
170
230
45
2.0
280
550
215.0
5.010
3800
4500
3
6
4
179
182
221
217
2
NN3936MBKR
NN3936MBKR
180
250
52
2.0
340
655
232.0
7.200
3500
4200
4
8
4
189
193
241
234
2
NN3938MBKR
NN3938MBKR
190
260
52
2.0
345
680
243.5
7.570
3400
4000
4
8
4
199
203
251
246
2
NN3940MBKR
NN3940MBKR
200
280
60
2.1
420
815
259.0
10.6
3200
3800
4
8
4
211
214
269
261
2
NN3944MBKR
NN3944MBKR
220
300
60
2.1
440
895
279.0
11.5
2500
3100
4
8
4
231
234
289
281
2
NN3948MBKR
NN3948MBKR
240
320
60
2.1
460
975
300.0
12.3
2400
2900
4
8
4
251
254
309
302
2
NN3952MBKR
NN3952MBKR
260
360
75
2.1
670
1380
335.0
21.4
2100
2600
5
9
4
271
275
349
338
2
NN3956MBKR
NN3956MBKR
280
380
75
2.1
695
1460
355.0
22.8
2000
2500
5
9
4
291
295
369
358
2
NN3960KR
NN3960KR
300
420
90
3.0
855
1800
388.0
36.2
1800
2300
6
12
4
313
318
407
391
2.5
NN3964KR
NN3964KR
320
440
90
3.0
880
1910
408.0
38.2
1800
2100
6
12
4
333
338
427
411
2.5
NN3972KR
NN3972KR
360
480
90
3.0
930
2130
448.0
42.1
1600
1900
6
12
4
373
381
467
451
2.5
NN3976KR
NN3976KR
380
520
106
4.0
1250
2730
484.0
63.5
1500
1800
6
12
4
396
405
504
487
3
NN3992K
NN3992K
460
620
118
4.0
1610
3700
578.0
94.5
1100
1300
6
12
4
476
486
604
581
3
NN39/530K
NN39/530K
530
710
136
5.0
2040
4900
663.0
139
900
1200
8
15
4
550
561
690
668
4
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