 Tolerance is provided for holes, which ordinary standard reamers can produce, in two grades. Classes A and B, the selection of which is a question for the user's decision and dependent upon the quality of the work required ; some prefer to use Class A...  The Starrett Book for Machinists' Apprentices - Σελίδα 31των Howard Parker Fairfield, Carl Stephen Dow - 1917 - 184 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | 1915 - 1436 σελίδες
...for Different Classes of Fits — I (Newall Engineering Co.) Formulas for Determining Allowances * Tolerance is provided for holes, which ordinary standard...quality of the work required; some prefer to use Class A u working limits and Class В as inspection limits. t Runnings fits, which are the most commonly required,... | |
 | Douglas Thomas Hamilton - 1918 - 326 σελίδες
...is followed, and there is no danger Table I. Tolerances for Standard Holes (Newall Engineering Co.) Tolerance is provided for holes, which ordinary standard...as working limits and Class B as inspection limits. of having the minimum hole the same size as the maximum shaft, which is sometimes the case when the... | |
 | Ernest Pull - 1922 - 730 σελίδες
...engineering firms. The " tolerances " for standard holes are in two grades, the selection of which is for the user's decision, and dependent upon the quality of the work required. TABLES OF LIMITS TOLERANCE IN STANDARD HOLES The shafts made to the following table of force fits will... | |
 | Albert Atkins Dowd, Frank W. Curtis - 1925 - 306 σελίδες
...TOLERANCES FOR VARIOUS KINDS OF FITS TABLE I. TOLERANCES FOR STANDARD HOLES (Newall Engineering Co.) Tolerance is provided for holes which ordinary standard...as working limits and Class B as inspection limits. Nominal Diameters, Inches Class 0— J A— 1 1A— 2 2rV-3 3,'.— 1 Max. Limit Min. Limit Tolerance... | |
| |
