NTN - Large Bearings

4-Row Cylindrical Roller Bearings
C1
r1
r
B1
D
d
FW
d 300380mm
Boundary dimensions Basic load ratings Bearing 1 Drawing 2
dynamic static dynamic static numbers No.
mm kN kgf
d D B 1 C 1 r s min
3
r ls min
3
C r C or C r C or
300
310
320
330
340
356.76
360
370
420 300 300 3 3 2,720 7,600 278,000 775,000 4R6015 A
420 300 300 3 3 2,900 7,850 295,000 800,000 4R6020 F 1
420 320 300 3 3 2,900 7,850 295,000 800,000 4R6018 F 2
430 240 240 3 3 2,160 5,150 220,000 525,000 4R6021 A
460 270 270 3 3 2,510 5,350 256,000 545,000 4R6019 A
430 240 240 3 3 2,240 5,950 228,000 605,000 4R6202 A
440 240 230 3 3 2,290 6,050 234,000 615,000 4R6414 A
450 240 240 3 3 2,370 6,150 242,000 630,000 4R6411 A
460 340 340 3 3 3,400 9,450 345,000 960,000 4R6412 A
470 350 350 3 3 4,150 10,900 425,000 1,110,000 4R6406 F 4
440 200 200 3 3 1,820 4,850 186,000 495,000 4R6603 B
440 200 200 5 3 1,720 4,550 176,000 465,000 4R6608 B 1
460 340 340 4 4 3,250 8,850 330,000 905,000 4R6605 A
460 340 340 4 4 3,300 9,550 335,000 975,000 4R6602 A
480 350 350 4 4 3,950 10,900 400,000 1,110,000 4R6819 FM 1
480 370 350 5 5 3,450 9,650 350,000 985,000 4R6811 A
490 300 300 4 4 3,350 8,300 340,000 845,000 4R6804 A
490 300 300 5 5 3,100 7,950 315,000 810,000 4R6805 A
550 400 400 4 4 5,100 13,800 520,000 1,410,000 4R7105K E
480 290 290 3 3 2,990 8,150 305,000 830,000 4R7207 A
510 370 370 4 4 3,550 9,700 365,000 990,000 4R7212 C
510 400 380 4 2 4,350 11,900 445,000 1,210,000 4R7205 E 1
510 400 400 5 5 4,250 11,500 435,000 1,170,000 4R7203 B
480 230 230 5 5 2,100 6,250 214,000 635,000 4R7405 A
480 250 250 3 3 2,200 6,450 225,000 660,000 4R7408 A
520 380 380 5 5 3,900 10,800 400,000 1,100,000 4R7411 A
520 400 400 5 5 4,650 13,500 475,000 1,370,000 4R7404 A
380
520 280 280 4 4 3,400 9,150 350,000 935,000 4R7605 A
520 290 290 4 4 3,400 9,150 350,000 935,000 4R7617 A
520 300 300 4 4 3,550 9,600 360,000 980,000 4R7607 G 1
540 400 400 4 4 5,200 15,200 530,000 1,550,000 4R7604 G 2
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Drawing details are shown in Page B-38.
3 Minimal allowable dimension for chamfer dimension r or r1.
B-70