Example: change the tolerance of a simple through hole from 6mm nominal dia. By altering the value in the tolerance properties.Shaft tolerance range class. Dimensional tolerances for regularly used fitting shaft. : h4 and n5 are old JIS standards, however they are listed.(select the dimension/RMB/select 'Properties'/ Tolerance Table: Hole/Table name: H 7/OK)We have been asked to supply this info in the model prior to dimensioning in a drawing. H7 H6 G7 G6 F8 F7 F6 E9 E8 E7 D10 D9 D8 C10 C9 B10 mm Note: In each column, the upper figure is the upper dimensional tolerance, and the lower figure is the lower dimensional tolera Hole tolerance range class nce.

You may also use 'Start a topic' button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist. Three different shafts were considered using a H7 hole tolerance as follows: (1) H7/g6 (2) H7/k6 (3) H7/p6 Use the extract from BS 4500 Limits and Fits for a Unilateral Hole Based System.

For other applications, a second set screw is considered for just above the keyway. For many applications, just one set screw, positioned at 90 degrees to the keyway, is sufficient. Once the key is inserted into the keyway, it is not going to move.The final consideration with sizing is the thread size and location of the set screw. The advantage of the Js9 tolerance is that the key can be inserted and the gear manipulated without much difficulty, whereas the P9 tolerance is a press fit tolerance. This is an undersized clearance.

H7 Hole Tolerance Fit