Catalog: Thin Section Ball Bearings
Company/Brand: RBC Bearings
4 11 4 bearing in Thin Section Ball Bearings by RBC Bearings
radial conrad contact angular contact 4-point contact sealed radial conrad contact ... sealed 4-point contact engineering data tolerance ... features typical applications custom bearings engineering application data c-type a- ... type x-type c-type x-type 4 5 selection guide part designation 6 ... 11 12 17 18 23 24 25 26 27 radial c- ... type angular a-type 4-point x-type sealed c-type 28 33 34 36 37 ... 39 40 42 43 sealed x-type engineering data ... cross sections of rbc thin section ball bearings 3/16 1/4 5/16 3/8 3/8 1/2 3/4 1 ... separator guide applications custom bearings series kaa ka kb bore size 1.0 1.5 ... 2.0 12.0 2.0 20.0 kc 4.0 30.0 ju 4.0 12.0 kd 4.0 30.0 kf 4.0 40.0 kg 4 ... .0 40.0 data fax rbc bearings are made in the u.s.a 3 ...
w to clear f1 max 4 places d lo li b radial c-type ball ... quantity 21 29 27 23 33 28 39 33 45 38 51 43 35 27 19 15 54 45 37 28 20 15 ... 57 48 39 30 21 16 60 50 41 31 22 17 63 53 43 33 23 18 69 58 47 36 ... 13 0.20 0.15 0.24 0.18 0.27 0.19 0.30 0.45 0.78 1.90 3.60 0.20 0.31 0.47 0.83 2.00 ... 3.80 0.22 0.33 0.48 0.88 2.10 4.00 0.23 0.34 0.50 0.94 2.20 4.10 0.24 0.38 ... 0.58 1.00 2.30 4.30 0.25 0.41 0.59 1.06 2.50 4.70 load ratings radial ... 720 990 1,020 1,310 1,290 1,550 2,250 2,470 3,940 3,990 6,700 6,480 730 1,040 1,030 ... 1,370 1,320 1,640 2,270 2,560 4,070 4,200 6,700 6,480 750 1,100 1,060 1,460 1,350 ... 1,720 2,350 2,730 4,210 4,410 7,000 6,910 760 1,160 1,070 1,520 1,370 ...
radial contact c-type thin section ball bearings series cross section size part number ... kf100cp0rbc kg100cp0rbc kaa 3/16 ka 1/4 kb 5/16 kc 3/8 kd 1/2 kf 3/4 kg 1 ... .281 10.375 10.563 10.750 6.313 6.391 6.469 6.625 6.938 7.250 6.813 6.891 6.969 7. ... 125 7.438 7.750 7.313 7.391 7.469 7.625 7.938 8.250 7.813 7.891 7.969 8. ... 125 8.438 8.750 8.313 8.391 8.469 8.625 8.938 9.250 9.313 9.391 9.469 9. ... 625 9.938 10.250 10.313 10.391 10.469 10.625 10.938 11.250 li -inner ring lo ... 0.080 f1 ball diameter 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5 ... /32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5 ... /32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 6.5000 6.6250 6.7500 7.0000 7. ... 9.5000 9.6250 9.7500 10.0000 10.5000 11.0000 10.5000 10.6250 10.7500 11.0000 11.5000 ...
w to clear f1 max 4 places d lo li b radial c-type ball ... quantity 75 63 51 39 27 21 81 68 55 42 29 22 87 73 59 45 31 24 93 78 63 48 33 ... 25 99 83 67 51 35 27 111 93 75 57 39 30 123 103 83 63 43 33 ... approx weight lbs 0.28 0.44 0.63 1.16 2.70 5.10 0.30 0.47 0.68 1.22 ... 2.90 5.40 0.31 0.50 0.73 1.31 3.20 5.80 0.34 0.53 ... 0.78 1.41 3.40 6.10 0.38 0.57 0.84 1.53 3.50 6.50 0.44 ... 0.94 1.72 3.90 7.20 0.50 0.73 1.06 1.88 4.30 7.90 load ratings radial lbf static ... dynamic 830 1,440 1,170 1,900 1,490 2,220 2,580 3,500 4,660 5,570 8,390 9, ... 550 1,200 2,040 1,530 2,390 2,650 3,750 4,790 5,950 8,520 9,450 870 1,660 1,240 2,190 ... 1,570 2,560 2,730 4,010 4,920 6,340 8,880 10,260 890 1,770 1,280 2, ...
radial contact c-type thin section ball bearings series cross section size kaa 3/16 ka ... 1/4 kb 5/16 kc 3/8 kd 1/2 kf 3/4 kg 1 part number ka110cp0rbc ... nominal dimensions in inches b bore 11.0000 11.0000 11.0000 11.0000 11.0000 11.0000 ... 30.0000 30.0000 30.0000 35.0000 35.0000 40.0000 40.0000 d outside diameter w width 0. ... 0.7500 1.000 0.750 1.000 land diameter 11.188 11.234 11.281 11.375 11.563 11.750 12. ... .281 30.375 30.563 30.750 35.563 35.750 40.563 40.750 11.313 11.391 11.469 11.625 11. ... 938 12.250 12.313 12.391 12.469 12.625 12.938 13.250 14.391 14.469 14. ... 625 14.938 15.250 16.391 16.469 16.625 16.938 17.250 18.391 18.469 18. ... 625 18.938 19.250 20.391 20.469 20.625 20.938 21.250 25.469 25.625 25. ...
w to clear f1 max 4 places d lo li b radial c-type ball ... quantity 135 113 91 69 47 36 147 123 99 75 51 39 143 115 87 59 45 ... 163 131 99 67 51 183 147 111 75 57 203 163 123 83 63 203 153 103 78 ... approx weight lbs 0.52 0.75 1.16 2.06 4.80 8.60 0.56 0.83 1.25 2.25 5.20 9.30 1.05 ... 1.20 1.73 3.10 7.10 12.30 1.35 1.94 3.48 7.90 13.70 1.50 2.16 3.85 8.90 15.80 2. ... 69 4.79 10.90 19.50 3.21 5.73 13.00 23.30 15.10 ... radial lbf static dynamic 1,030 2,560 1,420 3,350 1,820 3,900 3,180 6,050 5,730 9, ... 400 10,360 14,990 1,060 2,780 1,470 3,640 1,890 4,240 3,320 6,570 5,930 10, ... 170 10,690 16,170 1,560 4,220 2,000 4,910 3,460 7,590 6,240 11,700 11,280 18,540 ... 1,660 4,810 2,090 5,580 3,620 8,610 6,550 13,240 11 ...
w to clear f1 max 4 places d lo li b ls ball quantity 28 40 ... 36 31 44 38 52 44 60 51 68 58 49 36 26 20 72 61 52 38 27 21 76 64 55 40 ... 29 22 80 68 58 42 30 23 84 71 61 44 31 24 92 78 66 48 34 26 approx weight ... 13 0.20 0.15 0.24 0.18 0.27 0.19 0.30 0.45 0.78 1.90 3.60 0.20 0.31 0.47 0.83 2.00 ... 3.80 0.22 0.33 0.48 0.88 2.10 4.00 0.23 0.34 0.50 0.94 2.20 4.10 0.24 0.38 ... 0.58 1.00 2.30 4.30 0.25 0.41 0.59 1.06 2.50 4.70 load ratings radial ... 350 1,020 1,140 750 1,530 1,080 1,870 1,410 2,830 2,070 4,720 4,350 7,680 7,340 1, ... 200 770 1,600 1,090 1,980 1,440 2,980 2,410 4,880 4,390 8,070 7,580 1,260 780 1,680 ... 1,120 2,090 1,470 3,130 2,460 5,220 4,550 8,450 7,820 1,330 800 1,780 1,140 2,200 ...
contact a-type thin section ball bearings series kaa cross section size 3/16 ... 10.0000 10.0000 10.0000 10.0000 ka 1/4 kb 5/16 w width 0.2500 0.3125 0.3750 ... 0000 kc 3/8 kd 1/2 land diameter kf 3/4 kg 1 nominal dimensions in inches d ... .281 10.375 10.563 10.750 6.313 6.391 6.469 6.625 6.938 7.250 6.813 6.891 6.969 7. ... 125 7.438 7.750 7.313 7.391 7.469 7.625 7.938 8.250 7.813 7.891 7.969 8. ... 125 8.438 8.750 8.313 8.391 8.469 8.625 8.938 9.250 9.313 9.391 9.469 9. ... 625 9.938 10.250 10.313 10.391 10.469 10.625 10.938 11.250 6.375 6.469 6.563 ... 6.969 7.063 7.250 7.625 8.000 7.375 7.469 7.563 7.750 8.125 8.500 7.875 7.969 8. ... 063 8.250 8.625 9.000 8.375 8.469 8.563 8.750 9.125 9.500 9.375 9.469 9. ... 563 9.750 10.125 10.500 10.375 10.469 10.563 10.750 11.125 11.500 0.025 0.040 ...
w to clear f1 max 4 places d lo li b ls ball quantity 100 ... 85 72 52 37 28 108 91 78 56 40 30 116 98 83 60 43 32 124 105 89 64 45 34 132 ... 112 95 68 48 36 148 125 106 76 54 40 164 139 118 84 59 44 approx weight lbs ... 0.28 0.44 0.63 1.16 2.70 5.10 0.30 0.47 0.68 1.22 2.90 5.40 0.31 0.50 0.73 1.31 ... 3.20 5.80 0.34 0.53 0.78 1.41 3.40 6.10 0.38 0.57 0.84 1.53 3.50 6.50 0.44 ... 0.94 1.72 3.90 7.20 0.50 0.73 1.06 1.88 4.30 7.90 load ratings radial lbf static ... 860 1,650 1,240 2,210 1,620 2,710 2,720 4,010 5,010 6,550 8,860 10,640 890 1,780 1, ... 260 2,360 1,670 2,920 2,780 4,300 5,140 7,040 9,110 11,340 900 1,910 1, ... 300 2,530 1,720 3,110 2,850 4,600 5,290 7,540 9,370 12,050 920 2,040 1, ...
contact a-type thin section ball bearings series kaa cross section size 3/16 ... kf400ar0rbc kg400ar0rbc b bore 11.0000 11.0000 11.0000 11.0000 11.0000 11.0000 12.0000 ... 30.0000 30.0000 30.0000 35.0000 35.0000 40.0000 40.0000 ka 1/4 kb 5/16 w width 0.2500 ... 0000 kc 3/8 kd 1/2 land diameter kf 3/4 kg 1 nominal dimensions in inches d ... -counter bore housing fillet diameter 11.188 11.234 11.281 11.375 11.563 11.750 12. ... .281 30.375 30.563 30.750 35.563 35.750 40.563 40.750 11.313 11.391 11.469 11.625 11. ... 938 12.250 12.313 12.391 12.469 12.625 12.938 13.250 14.391 14.469 14. ... 625 14.938 15.250 16.391 16.469 16.625 16.938 17.250 18.391 18.469 18. ...
w to clear f1 max 4 places d lo li b ls ball quantity 180 ... 152 129 92 65 48 196 166 140 100 70 52 192 163 116 81 60 ... 92 68 246 209 148 104 76 273 231 164 115 84 288 204 142 104 345 244 170 124 198 ... approx weight lbs 0.52 0.75 1.16 2.06 4.80 8.60 0.56 0.83 1.25 2.25 5.20 9.30 1.05 ... 1.20 1.73 3.10 7.10 12.30 1.35 1.94 3.48 7.90 13.70 1.50 2.16 3.85 8.90 15.80 2. ... 69 4.79 10.90 19.50 3.21 5.73 13.00 23.30 15.10 ... dynamic 1,070 2,940 1,500 3,890 1,990 4,780 3,310 6,960 6,160 11,200 10,920 17,660 ... 1,100 3,200 1,560 4,250 2,060 5,180 3,430 7,550 6,320 12,020 11,230 19,060 1,670 ... 4,900 2,180 6,010 3,560 8,730 6,720 13,860 11 ... 24,660 1,860 6,270 2,390 7,680 3,930 11,090 7,310 17,680 12,840 27,450 1,940 6,950 ...
w to clear f1 max 4 places d lo li b radial lbf thrust lbf ... 630 680 .03 29 280 310 840 770 .04 27 460 490 1,390 1,230 .10 23 630 700 1,880 1, ... 750 2,260 1,880 .20 39 660 560 1,970 1,410 .15 33 880 800 2,630 1,990 .24 45 750 ... 590 2,260 1,480 .18 38 1,000 840 3,010 2,100 .27 51 850 ... 620 2,560 1,550 .19 43 1,130 880 3,390 2,210 .30 35 1,340 1, ... 120 4,010 2,810 .45 27 2,120 1,960 6,370 4,890 .78 19 3,450 ... 15,150 3.60 54 900 640 2,700 1,590 .20 45 1,180 890 3,540 2,230 .31 37 1,410 1, ... 150 4,230 2,870 .47 28 2,190 1,970 6,580 4,920 .83 20 3,610 ... 15,150 3.80 57 950 640 2,840 1,610 .22 48 1,260 920 3,770 2,300 .33 39 1,480 1, ... 170 4,440 2,920 .48 30 2,340 2,030 7,030 5,080 .88 21 3,780 ...
4-point contact x-type thin section ball ... bearings series cross section size part number ... kg100xp0rbc b bore kaa 3/16 ka 1/4 kb 5/16 w width 0.2500 0.3125 0.3750 ... .281 10.375 10.563 10.750 6.313 6.391 6.469 6.625 6.938 7.250 6.813 6.891 6.969 7. ... 125 7.438 7.750 7.313 7.391 7.469 7.625 7.938 8.250 7.813 7.891 7.969 8. ... 125 8.438 8.750 8.313 8.391 8.469 8.625 8.938 9.250 9.313 9.391 9.469 9. ... 625 9.938 10.250 10.313 10.391 10.469 10.625 10.938 11.250 kf 3/4 kg 1 ... 0.080 f1 ball diameter 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5 ... /32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5 ... /32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 6.0000 6.0000 6.0000 6.0000 6. ... 9.5000 9.6250 9.7500 10.0000 10.5000 11.0000 10.5000 10.6250 10.7500 11.0000 11.5000 ...
w to clear f1 max 4 places d lo li b radial lbf static ... 710 1,240 75 .28 1,020 1,640 63 .44 1,290 1,920 51 .63 2,240 3,010 39 1.16 ... 4,060 4,780 27 2.70 7,320 7,770 21 5.10 730 1,340 ... 81 .30 1,040 1,760 68 .47 1,320 2,060 55 .68 2,300 3,230 42 1.22 ... 4,150 5,110 29 2.90 7,410 8,100 22 5.40 740 1,430 87 .31 1,070 1,890 73 .50 1, ... 370 2,210 59 .73 2,350 3,450 45 1.31 4,260 5,440 31 3.20 7,730 8,800 24 5.80 760 1 ... 1,090 2,010 78 .53 1,390 2,350 63 .78 2,430 3,670 48 1.41 4,370 5,770 33 3.40 7,790 ... 790 1,630 99 .38 1,120 2,140 83 .57 1,420 2,500 67 .84 2,470 3,890 51 1.53 4,470 ... 6,110 35 3.50 8,090 9,820 27 6.50 810 1,820 ... 111 .44 1,150 2,390 93 .66 1,480 2,790 75 .94 2,560 4,330 57 1.72 4,650 ...
4-point contact x-type thin section ball ... bearings series cross section size part number ... kf400xp0rbc kg400xp0rbc kaa 3/16 ka 1/4 kb 5/16 kc 3/8 kd 1/2 kf 3/4 kg 1 ... nominal dimensions in inches b bore 11.0000 11.0000 11.0000 11.0000 11.0000 11.0000 ... 30.0000 30.0000 30.0000 35.0000 35.0000 40.0000 40.0000 d outside diameter 11.5000 11. ... 6250 11.7500 12.0000 12.5000 13.0000 12.5000 12.6250 ... 31.0000 31.5000 32.0000 36.5000 37.0000 41.5000 42.0000 w width 0.2500 0.3125 0.3750 0. ... 7500 1.0000 0.7500 1.0000 land diameter 11.188 11.234 11.281 11.375 11.563 11.750 12. ... .281 30.375 30.563 30.750 35.563 35.750 40.563 40.750 11.313 11.391 11.469 11.625 11. ...
w to clear f1 max 4 places d lo li b ball quantity 135 113 ... 91 69 47 36 147 123 99 75 51 39 143 115 87 59 45 163 131 99 67 51 183 147 111 ... 123 approx weight lbs .52 .75 1.16 2.06 4.80 8.60 .56 .83 1.25 2.25 5.20 9.30 1.05 1 ... 1.20 1.73 3.10 7.10 12.30 1.35 1.94 3.48 7.90 13.70 1.50 2.16 3.85 8.90 15.80 2. ... 69 4.79 10.90 19.50 3.21 5.73 13.00 23.30 15.10 ... 890 1,230 3,370 1,580 5,220 2,730 8,100 4,960 12,900 9,010 2,400 910 3,150 1,270 3, ... 8,760 5,120 13,920 9,270 3,650 1,370 4,240 1,730 6,550 2,940 10,100 5,440 15,950 9 ... ,720 4,160 1,460 4,820 1,800 7,440 3,140 11,420 5,670 18,010 10,200 4,660 ... 1,530 5,400 1,890 8,320 3,240 12,750 5,880 20,050 ... 1,970 9,210 3,390 14,070 6,040 22,100 11,050 7,440 2,210 11,420 3,720 17,390 6,540 ...
radial contact c-type thin section ball bearings w to clear .015 max 4 places d mo mi b ... ju110cp0rbc ju120cp0rbc b bore 4.0000 4.2500 4.5000 4.7500 5.0000 5.5000 6.0000 6. ... 7.0000 7.5000 8.0000 9.0000 10.0000 11.0000 12.0000 d outside diameter 4.7500 5. ... 7.7500 8.2500 8.7500 9.7500 10.7500 11.7500 12.7500 w width 0.500 0.500 0.500 0.500 ... 0.500 0.500 0.500 0.500 0.500 0.500 mi 4.155 4.405 4.655 4.905 5.155 5.655 6.155 6. ... 655 7.155 7.655 8.155 9.155 10.155 11.155 12.155 mo 4.550 4.800 5.050 5.300 5.550 ... 7.050 7.550 8.050 8.550 9.550 10.550 11.550 12.550 ball diameter 3/16 3/16 3/16 3/ ... 3/16 3/16 3/16 ball quantity 35 37 39 41 43 47 51 55 59 63 67 75 83 91 99 the ... contact rbc for more information 24 rbc bearings are made in the u.s.a ...
radial contact x-type thin section ball bearings w to clear .015 max 4 places d mo mi b ... part number b bore 4.0000 4.2500 4.5000 4.7500 5.0000 5.5000 6.0000 6.5000 7.0000 7. ... 5000 8.0000 9.0000 10.0000 11.0000 12.0000 nominal dimensions in inches d ... ju100xp0rbc ju110xp0rbc ju120xp0rbc 4.7500 5.0000 5.2500 5.5000 5.7500 6.2500 6. ... 7.7500 8.2500 8.7500 9.7500 10.7500 11.7500 12.7500 w width 0.500 0.500 0.500 0.500 ... 0.500 0.500 0.500 0.500 0.500 0.500 mi 4.155 4.405 4.655 4.905 5.155 5.655 6.155 6. ... 655 7.155 7.655 8.155 9.155 10.155 11.155 12.155 mo 4.550 4.800 5.050 5.300 5.550 ... 7.050 7.550 8.050 8.550 9.550 10.550 11.550 12.550 ball diameter 3/16 3/16 3/16 3/ ... 3/16 3/16 3/16 ball quantity 35 37 39 41 43 47 51 55 59 63 67 75 83 91 99 the ...
68 .74 .81 .87 .93 .99 1.06 1.18 1.31 1.43 1.56 load ratings radial lbf dynamic ... static 1,340 1,120 1,410 1,150 1,480 1,170 1,550 1,190 1,630 1,220 1,770 1, ... 1,320 2,210 1,370 2,350 1,390 2,500 1,420 2,790 1,480 3,080 1,520 3,370 1,580 3, ... 660 1,640 thrust lbf dynamic static 4,010 2,810 4,230 2,870 4,440 2,920 4,660 2, ... 970 4,880 3,040 5,310 3,120 5,750 3,220 6,180 3, ... 300 6,630 3,420 7,060 3,480 7,490 3,560 8,370 3,690 9,230 3,790 10,110 3, ... 950 10,980 4,090 moment lbf in dynamic static 3,510 2, ... 460 3,910 2,650 4,330 2,850 4,780 3,040 5,250 3,270 6,240 3,660 7,330 4, ... 100 8,500 4,540 9,770 5,040 11,110 5,490 12,550 5,970 15,690 6,920 19,160 7,870 ... 2,160 2,050 1,950 1,860 1,700 1,570 1,460 1,360 1,270 1,190 1,070 970 880 810 ...
rbc thin section ball bearings tolerance tables recommended fits ... tolerances the rbc thin section bearings shown in this catalog are manufactured ... where required rbc thin section bearings can be manufactured to abec 3f abec 5f ... rbc precision class 0 abec 1f bearing bore size inches 1.00 1.50 2.00 2.50 3. ... 00 3.50 4.00 4.25 4.50 4.75 5.00 5.50 6.00 6.50 7.00 7.50 8.00 9.00 ... 10.00 11.00 12.00 14.00 16.00 18.00 20.00 25.00 30. ... 00 35.00 40.00 values in 0.0001 inches c-type rotating ... shaft diameters bore nominal -4 -5 -6 -6 -6 -8 -8 -8 -8 -10 -10 -10 -10 ... 12 -14 -14 -14 -16 -18 -18 -20 -30 -30 -40 -40 o.d nominal -5 -5 -5 -5 -6 -6 -6 -8 ... 12 -14 -14 -14 -16 -18 -18 -20 -30 -30 -40 -40 race runout radial axial inner ...
rbc thin section ball bearings tolerance tables recommended fits rbc ... precision class 0 abec 1f bearing bore size inches 1.00 1.50 2.00 2.50 3. ... 00 3.50 4.00 4.25 4.50 4.75 5.00 5.50 6.00 6.50 7.00 7.50 8.00 9.00 ... 10.00 11.00 12.00 14.00 16.00 18.00 20.00 25.00 30. ... 00 35.00 40.00 values in 0.0001 inches a-type x-type ... stationary shaft rotating shaft bearing radial play before installation x-type ... 20 24 24 24 28 28 28 28 32 32 36 36 36 40 40 15 17 22 22 22 26 26 26 26 30 30 30 ... 30 30 30 34 34 34 38 38 38 38 42 42 46 46 46 50 50 +4 +5 +6 +6 +6 +8 +8 +8 +8 +10 ... 14 +14 +14 +16 +16 +18 +18 +18 +20 +20 -4 -5 -6 -6 -6 -8 -8 -8 -8 -10 -10 -10 -10 ... 24 -28 -28 -28 -28 -32 -32 -36 -36 -36 -40 -40 -5 -5 -5 -5 -6 -6 -6 -8 -8 -8 -8 - ...
rbc thin section ball bearings tolerance tables recommended fits rbc ... precision class 4 abec 5f diameters bearing bore size bore o.d inches nominal ... nominal 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.25 4.50 4.75 5.00 5.50 6.00 6.50 7.00 ... 7.50 8.00 9.00 10.00 11.00 12.00 14.00 16.00 18.00 20.00 -2 -2 -3 ... -3 -3 -3 -3 -3 -3 -4 -4 -4 -4 -4 -4 -5 -5 -5 -5 -5 -5 -6 -6 -6 -7 -2 -2 -3 ... -3 -3 -3 -3 -4 -4 -4 -4 -5 -5 -5 -5 -5 -5 -5 -5 -5 -6 -6 -7 -7 ... .0001 inches all types stationary shaft bearing radial play rotating shaft before ... 18 20 20 22 +2 +2 +3 +3 +3 +3 +3 +3 +3 +4 +4 +4 +4 +4 +4 +5 +5 +5 +5 +5 +5 +6 +6 ... +6 +7 +2 +2 +3 +3 +3 +3 +3 +4 +4 +4 +4 +5 +5 +5 +5 +5 +5 +5 +5 +5 +6 +6 +7 +7 ...
