NOTES WHICH APPLY TO LIST OF COMMON MANDRELS, STONES, AND PARTS
USED WET AND DRY HOLING
1. For most honing it' s recommended wet honing with a good grade of honing oil.
2. Many other mandrels and stones are available. When ordering specify approximate diameter of bore, length and type of material to be honed for example:
Mandrel and Stone Set for 2 inch bore 7" long hardened steel
*
Special mandrels are available below 1/8" - Specify size. Sizes 1/8" - 3/4" are indicated by minimum hole size diameter number in thousandths as follows:
120, 1Z5, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220,
225, 230, 235, 240, 245, 250, 255, 260, 265, 270, 275, 280, 285, 290, 295, 300, 308, 316, 323, 331, 339,
347, 354, 362, 370, 385, 400, 416, 432, 447, 463, 479, 495, 526, 557, 588, 619, 650, 681, 713, 744
R groups in this range are measured in 64ths of an inch. It is common to simply specify the R type mandrel followed by the hole size.
EXAMPLE: R-.308 or RZ0-308
If a soft or hard mandrel is required add an S (soft) or H (hard) before the size needed. An ES (extra soft) may be used for honing plastics, plated holes, Etc.
Black mandrels are Hard - Brite plate mnandrel3 are soft and extra soft.
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