Bearingizing Tools

REQUEST A QUOTE
bearingizing tool

Rapid fire

The Bearingizing Tool combines roller burnishing with peening action. As the tool is rotated at a high speed the rolls spin, rise, and fall over a cammed arbor, delivering up to 200,000 rapid fire blows per minute to the work surface. The peaks and valleys of the machined surface are compacted into a smooth, hardened, and ultra fine surface finish.

The Bearingizer may be the tool of choice when the following conditions exist:

  • Parts with thin walls — Bearingizing eliminates barrel-shaping of the part.
  • Parts with irregular wall thicknesses — the Bearingizing tool will produce a very round hole, whereas the Roll-a-Finish® tool might generate a slightly egg-shaped hole, due to variations in wall thickness.
  • Applications where porosity is an issue (e.g., oil-impregnated bearings) — the smaller “footprint” of the Bearingizing roll leaves pores in the surface intact.
  • Applications where very tight tolerances must be held — the Bearingizer reduces springback in the work surface material. The Bearingizing tool can, in some materials and with proper part preparation, hold size as close as ±.0001 inch (.002mm), while the Roll-a-Finish tool can achieve tolerances of ±.00025 inch (.006mm).

Where the above conditions do not exist, the Roll-a-Finish® tool would generally be the tool of choice, for two reasons:

  1. The relatively wide adjustment range of the Roll-a-Finish tool, which is typically .040 inch (1.01mm), and
  2. The ease of adjustment, with the castellated adjusting collar on the Roll-a-Finish tool.

The Bearingizing tool features a greater number of rolls, and rolls of a smaller diameter, as compared to the Roll-a-Finish tool, and can only be adjusted by change of rolls. The Bearingizer also requires a closer presize than the Roll-a-Finish tool.

Where the above conditions do exist, the Bearingizing tool should be considered. While the Roll-a-Finish Tool increases surface hardness by about 5 to 10%, Bearingizing increases hardness by 10 to 30%, but with less surface penetration.

Multiple Positions

Bearingizing tools provide three roll positions over the cammed arbor (see right). When the forward (#1 position) of cam becomes worn, the roll cage can be re-positioned to the # 2 and # 3 positions by exchanging positions with the movable collars. This presents NEW cam surfaces and original BUILD-UP. After all positions on the cam are worn beyond producing acceptable parts, oversize rolls can be used to further extend tool life. Roll sizes are available in increments of .0001 inch (.0025 mm) and the tool will accommodate a range of roll sizes up to .002 inch (.0508 mm).

Can be used in three positions:

  • Through-hole applications.
  • Semi-bottoming applications.
  • Bottoming applications.
Straight, Helix, Bottoming

Standard Tool Specifications

bearingizing tool specs
NOMINAL BUILD-UP RANGE CAM SHANK OVERALL LENGTH WORK LENGTH NO.
TOOL SIZE DIAMETER DIAMETER MAXIMUM MINIMUM OF
INCHES MM INCHES MM INCHES MM INCHES MM INCHES MM INCHES MM INCHES MM ROLLS
.188 4.76 .1861 4.727 .1281 3.254 .500 12 5.5 139.7 2.938 74.61 2.188 55.56 6
.1901 4.829
.219 5.56 .2174 5.522 .1594 4.049 .500 12 5.5 139.7 2.938 74.61 2.188 55.56 6
.2214 5.624
.236 6 .2343 5.951 .1670 4.242 .500 12 6 152.4 3.438 87.31 2.375 60.32 6
.2383 6.053
.250 6.35 .2486 6.314 .1806 4.587 .500 12 6 152.4 3.438 87.31 2.375 60.32 6
.2526 6.416
.276 7 .2743 6.967 .2064 5.243 .500 12 6 152.4 3.438 87.31 2.313 58.74 6
.2783 7.069
.281 7.14 .2799 7.109 .2119 5.382 .500 12 6 152.4 3.438 87.31 2.313 58.74 6
.2839 7.211
.313 7.94 .3112 7.904 .2212 5.618 .500 12 6 152.4 3.438 87.31 2.313 58.74 6
.3152 8.006
.315 8 .3137 7.968 .2238 5.667 .500 12 6 152.4 3.438 87.31 2.313 58.74 6
.3177 8.069
.343 8.73 .3425 8.700 .2525 6.414 .500 12 7 177.8 4.438 112.71 3.063 77.79 6
.3465 8.801
.354 9 .3530 8.966 .2631 6.683 .500 12 7 177.8 4.438 112.71 3.063 77.79 6
.3570 9.068
.375 9.53 .3738 9.495 .2518 6.396 .500 12 7 177.8 4.438 112.71 3.125 79.38 6
.3778 9.596
.394 10 .3965 9.970 .2705 6.871 .500 12 7 177.8 4.438 112.71 3.125 79.38 6
.3925 10.071
.406 10.32 .4051 10.290 .2831 7.191 .500 12 8 203.2 5.438 138.11 3.563 90.49 6
.4091 10.391
.433 11 .4320 10.973 .2779 7.059 .500 12 8 203.2 5.438 138.11 3.688 93.66 6
.4360 11.074
.438 11.11 .4365 11.087 .2825 7.176 .500 12 8 203.2 5.438 138.11 3.688 93.66 6
.4405 11.189
.469 11.91 .4678 11.882 .3138 7.971 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.4718 11.984
.472 12 .4710 11.963 .3174 8.062 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.4750 12.065
.500 12.70 .4990 12.675 .3450 8.763 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.5030 12.776
.512 13 .5110 12.979 .3568 9.063 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.5150 13.081
.531 13.49 .5303 13.470 .3763 9.558 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.5343 13.571
.551 14 .5500 13.970 .3962 10.063 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.5540 14.072
.563 14.29 .5615 14.262 .4075 10.351 .500 12 8 203.2 5.438 138.11 3.688 93.66 8
.5655 14.364
.591 15 .5896 14.976 .4356 11.064 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.5936 15.077
.594 15.09 .5928 15.057 .4388 11.146 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.5968 15.159
.625 15.87 .6240 15.850 .4390 15.151 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.6280 15.951
.630 16 .6290 15.977 .4439 11.275 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.6330 16.078
.656 16.67 .6553 16.645 .4703 11.946 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.6593 16.746
.669 17 .6680 16.967 .4833 12.276 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.6720 17.069
.688 17.46 .6865 17.437 .5015 12.738 .750 20 8 203.2 4.875 123.83 3.125 79.38 8
.6905 17.539
.709 18 .7080 17.983 .5227 13.277 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7120 18.085
.719 18.26 .7178 18.232 .5328 13.533 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7218 18.334
.748 19 .7470 18.974 .5620 14.275 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7510 19.075
.750 19.05 .7490 19.025 .5640 14.326 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7530 19.126
.781 19.84 .7803 19.820 .5953 15.121 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7843 19.921
.787 20 .7860 19.964 .6014 15.276 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.7900 20.066
.813 20.64 .8115 20.612 .6265 15.913 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.8155 20.714
.827 21 .8260 20.980 .6408 16.276 .750 20 8 203.2 4.875 123.83 3.125 79.38 10
.8300 21.082
.844 21.43 .8428 21.407 .5958 15.133 .750 20 9 228.60 5.875 149.23 3.75 95.25 10
.8468 21.509
.866 22 .8650 21.971 .6181 15.700 .750 20 9 228.60 5.875 149.23 3.75 95.25 10
.8690 22.076
.875 22.22 .8740 22.200 .6270 15.926 .750 20 9 228.60 5.875 149.23 3.75 95.25 10
.8780 22.301
.905 23 .9050 22.987 .6583 16.721 1.000 25 10 254.00 6.125 155.58 4.00 101.60 10
.9090 23.087
.906 23.02 .9053 22.995 .6583 16.721 1.000 25 10 254.00 6.125 155.58 4.00 101.60 10
.9093 23.096
.938 23.81 .9365 23.787 .6895 17.513 1.000 25 10 254.00 6.125 155.58 4.00 101.60 10
.9405 23.889
.945 24 .9440 23.978 .6969 17.701 1.000 25 10 254.00 6.125 155.58 4.00 101.60 10
.9480 24.078
.969 24.61 .9678 24.582 .7208 18.308 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
.9718 24.684
.984 25 .9830 24.968 .7363 18.702 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
.9870 25.070
1.000 25.40 .9990 25.375 .7520 19.101 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
1.0030 25.476
1.063 26.99 1.0615 26.962 .8145 20.688 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
1.0655 27.064
1.125 28.57 1.1240 28.550 .8770 22.276 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
1.1280 28.651
1.188 30.16 1.1865 30.137 .9395 23.863 1.000 25 10 254.00 6.125 155.58 4.00 101.60 12
1.1905 30.239
1.250 31.75 1.2490 31.725 .9390 23.851 1.000 25 10 254.00 6.125 155.58 4.00 101.60 14
1.2530 31.826

We’ll design tools specifically for your needs

LET US HELP

Burnishing Tools

Rollierwerkzeuge Produktpalette von Cogsdill

Deburring Tools

Entgratwerkzeuge Produktpalette von Cogsdill

Shefcut Reaming

Shefcut Reaming Product Range

Recessing Tools

Recessing Product Range

ZX Systems

ZX CNC- Plandrehköpfe & Auskammerwerkzeuge Produktpalette von Cogsdill