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Mechanical Tolerances

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Shaft Tolerance Radial Ball and Roller Bearings

Shaft Tolerance Classifications for Metric Radial Ball and Roller Bearings of ABEC-1 and RBEC-1 Tolerance Classes ANSI/ABMA 7

Engineering Tolerances

A Study of tolerance limits and fits for engineering purposes, with full tables of all recognized and published tolerance systems.

Measuring Pitch Diameters using Three Wire Method

The pitch diameter of a screw thread may be measured very accurately by means of some form of dial caliper or micrometer and three wires of equal diameter.

Measuring and Designing Dovetail Slides

Dovetail slides that must be machined accurately to a given width are commonly gaged by using a gage pin of known diameter and measured as indicated by the dimensions x and y

Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3

Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3

Composite Position Tolerance Calculator GD&T for External FOS

GD&T Composite Position Tolerance Calculator for Dimensional Inspection: External Feature of Size - post, tab, pipe, etc...

Composite Position Tolerance GD&T Calculator for Internal FOS

GD&T Composite Position Tolerance Calculator for Dimensional Inspection

Rubber Molded Parts Mechanical Tolerances

There are four levels of dimensional tolerances that are used for molded rubber products. “A1” High Precision “A2” Precision “A3” Commercial “A4” Basic. The level selected should be based upon the need with the following guidelines.

Casting Tolerances per. NADCA and ISO

The North American Die Casting Association (NADCA) has standard specifications for setting high pressure die casting tolerances. There is also the international ISO standard series, which focuses on casting tolerances. This series replaces the former ISO 8062:1994. ISO 8062:1994 did not have specifications to high pressure die castings.

Gage Tolerance Calculator ASME B89.1.5 Pin and Ring Gauges

This calculator will determine the gage class and tolerance per ANSI ASME B89.1.5 for cylindrical I.D and O.D. gauges.

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