Mechanical Tolerance Chart Data. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 Shaft tolerance data. Enter your desired preferred tolerance grade and the nomial size. Also see Table of Hole Tolerances per. ISO 286. NOTE: Nominal Diameter 250 mm max. Related Resources: Link to this Webpage.

The Inch values shown in the table are conversion from the mertic values per ISO 286. you should expect about 0.1-0.5 thous errors wehn comparing with ANSI B4.1/4.2! The posision of H relative to the other Shaft deviations.

H8/h9, H8/h8, H8/h7, H7/h6 Sliding fits with very small clearances for precise guiding and centering of parts. Mounting by sliding on without use of any great force, after lubrication the parts can be turned and slid by hand.

h7 +12 0 +15 0 +18 0 +21 0 +25 0 +30 0 +35 0 +40 0 +46 0 +52 0 +57 0. h8 +18 0 +22 0 +27 0 +33 0 +39 0 +46 0 +54 0 +63 0 +72 0 +81 0 +89 0. h9 +30 0 +36 ... j6 +5-3 +5 -4 +6-5 +8-5 +10 -6 +13 -6 +16 -6 +18-7 +22 -7 +25 -7 +29-7. j7 +6-6 +8 -7 +10-8 +12-9 +14 -11 +18 -12 +22 -13 ...

H8/j7, H7/js6,H7/j6, J7/h6 Tight fits with small clearances or negligible interference. The parts can be assembled or disassembled manually. Easily dismountable fits of hubs of gears, pulleys and bushings, retaining rings, frequently removed bearing …

这是一个公差配合的问题， 首先大写的H代表基孔制。Φ6代表了轴的直径（基本公差） H7 js6分别代表了孔和轴的公差带。

Calculate upper and lower limits for shafts and holes (bores). 5 selections have been checked manually. Fits with great clearances with parts having great tolerances. Pivots, latches, fits of parts exposed to corrosive effects, contamination with …

Mar 7, 2017 · British Standard for metric Limits and Fits. The basic size of the feature or fit is the dimension the tolerances will be applied to: The zero line in the calculator. A tolerance is described using a letter followed by a number. The letter is the tolerance deviation, the number the tolerance grade. ex: H11. Each tolerance has a maximum and minimum.

Name for a combination of a fundamental deviation and a tolerance grade, e.g. H7. fundamental tolerance. A tolerance assigned to a fundamental tolerance grade, e.g. IT7 and a nominal dimension range , e.g. to 50 mm. fit. Planned joining condition between hole and shaft.

Complete charts for H7/js6 Transition Fit per ISO 286, including size limits for hole and shaft and clearance classification data.