Advanced Product Solutions

RUB Cylindrical
Roller Bearings

Engineered to withstand the heavy loads and low speeds in continuous casting machines, NSK’s RUB series are designed to offer a particularly effective solution for the float end of single and split segment guide rolls. RUB bearings accommodate roll extension with smooth axial displacement, and their self-aligning design tolerates misalignment and shaft deflection without impacting performance. They run with reduced sliding friction and wear compared to conventional bearing solutions for a longer, more reliable operating life.

Proven Advantages

Extended operating life – preventing wear problems related to differential sliding
Smoothly absorbs axial thermal expansion of the roll, eliminating wear to the chock bore surface
Self-aligning capability accommodates misalignment and shaft deflection, minimizing the effects of edge loading
Full-complement design option for extremely high loads

Design Features

Single-row cylindrical roller bearing with aligning ring
With pin-type brass cage or full complement design options
High-capacity internal design parameters, with optimal size and number of rollers
Optimized roller crowning reduces internal sliding friction and wear while absorbing roll bending
Available with / without lubrication holes in the aligning ring, lubrication groove and holes in the outer ring
Corrosion-resistant phosphate coating option
Available with radial internal clearance C-normal, C3 and C4

Designation System

Bearing Dimensions and Operating Values

100RUB40APV 100 150 50 2 230 530 2
100RUB31APV 165 52 2 272 550 2
100RUB31 165 52 2 221 385 1
100RUB22APV 180 46 2.1 277 545 2
100RUB32APV 180 60.3 2.1 360 650 2
100RUB22 180 46 2.1 251 375 1
100RUB23 215 73 3 435 595 1
110RUB30APV 110 170 45 2 246 565 2
110RUB40APV 170 60 2 300 735 2
110RUB31APV 180 56 2.5 345 670 2
110RUB41APV 180 69 2 385 835 2
110RUB41 180 69 2 271 490 1
110RUB22APV 200 53 2.5 380 625 2
120RUB30APV 120 180 46 2 275 625 2
120RUB40APV 180 60 2 330 790 2
120RUB30 180 46 2.5 215 415 1
120RUB40 180 60 2 247 495 1
120RUB41APV 200 80 2.5 470 1040 2
120RUB41 200 80 2 370 680 1
120RUB32APV 215 76 2.1 510 990 2
120RUB32 215 76 2.1 435 735 1
130RUB40APV 130 200 69 2 410 955 2
130RUB31APV 210 64 2 415 865 2
130RUB41APV 210 80 2 480 1050 2
130RUB41 210 80 2 380 715 1
130RUB22APV 230 64 3 495 840 2
130RUB32APV 230 80 3 585 1090 2
130RUB32 230 80 3 490 825 1
140RUB30APV 140 210 53 2 365 885 2
140RUB40APV 210 69 2 420 990 2
140RUB40 210 69 2 330 670 1
140RUB31APV 225 68 2.1 485 100 2
140RUB41APV 225 85 2.1 575 1310 2
140RUB41 225 85 2.1 435 830 1
140RUB22APV 250 68 3 510 1110 2
140RUB32APV 250 88 3 670 1500 2
140RUB22 250 68 3 480 740 1
150RUB30APV 150 225 56 2.5 390 840 2
150RUB40APV 225 75 2.1 485 1210 2
150RUB40 225 75 2.1 375 755 1
150RUB31APV 250 80 2.1 595 1290 2
150RUB41APV 250 100 2.1 710 1620 2
150RUB41 250 100 2.1 540 1040 1
150RUB32APV 270 96 3 815 1640 2
150RUB32 270 96 3 690 1210 1
160RUB40APV 160 240 80 2.1 530 1330 2
160RUB41APV 270 109 2.1 855 1830 2
160RUB41 270 109 2.1 690 1260 1
160RUB32APV 290 104 3 960 1890 2
160RUB32 290 104 3 795 1370 1
170RUB30APV 170 260 67 2.1 555 1130 2
170RUB40APV 260 90 2.1 655 1580 2
170RUB41APV 280 109 2.1 875 1900 2
170RUB41 280 109 2.1 710 1330 1
170RUB32APV 310 110 4 1060 2090 2
170RUB32 310 110 4 915 1590 1
180RUB40APV 180 280 100 2.5 785 1870 2
180RUB40 280 100 2.1 635 1300 1
180RUB41APV 300 118 3 940 2120 2
180RUB41 300 118 3 755 1460 1
180RUB32APV 320 112 4 1090 2190 2
190RUB40APV 190 290 100 2.1 850 2100 2
190RUB41 290 100 2.1 650 1360 1
190RUB31APV 320 104 3 1050 2240 2
190RUB41APV 320 128 3 1120 2480 2
190RUB32APV 340 120 4 1210 2430 2
190RUB32 340 120 4 1050 1870 1
200RUB40APV 200 310 109 2.1 1030 2550 2
200RUB30 310 82 2.5 635 1210 1
200RUB40 310 109 2.1 770 1540 1
200RUB31APV 340 112 3 1160 2470 2
200RUB41APV 340 140 3 1340 3100 2
200RUB41 340 140 3 1080 2200 1

Additional bearing sizes are available. Please contact NSK for additional information.