NTN - Large Bearings

Turn Table Bearings: 3–Row Cylindrical Roller Type
¡ These are compound type bearings which unite the double row thrust roller bearing and the radial roller bearing.
¡ These bearings are designed so that rollers in each row support axial and moment loads respectively, and high rigidity and
long life can be obtained since the rolling parts make line contact.
¡ They are suitable for tunnel excavating machines or cranes with frequent turns.
Da
La
Ui
mz
Di
K
b
Za - da
So
ho
H
C
Ua
Li
O
ti
Si
mi
Zi - di
to
R
mo
D i
1,1044,000mm
Drawing A
Boundary dimensions Gear spec Setting holes (inner ring) Setting holes (outer ring)
module
number of gear teeth
z i
z a
D i D a H mz m z b L i (n) d i S i m i t i L a (n) d a s o t o m o
1,104
1,400
1,620
2,172
2,784
4,000
1,510 175 1,128 12 94 140 1,230 36 26 30 M24X3 45 1,460 36 26 108 52 M24X3
1,850 220 1,428 14 102 120 1,520 48 26 30 M24X3 50 1,795 48 26
2,180 260 1,656 18 92 180 1,800 40 33 30 M30X3.5 60 2,115 40 1 33
2,660 230 2,196 12 183 170 2,300 48 33 35 M30X3.5 60 2,595 48 33
3,305 240 2,808 12 234 140 2,910 42 33 30 M30X3.5 55 3,240 42 33
4,700 348 4,032 16 252 210 4,175 88 42 50 M39X4 70 4,615 88 42 226 80 M39X4
1 Disparity positioned
C-16