Αποτελέσματα Αναζήτησης
The hole basis fits have four preferred hole tolerances (H11, H9, H8, and H7); the shaft basis fits have four preferred shaft tolerances (h11, h9, h7, and h6) as shown in Table 6-1. The above shaft tolerances are now covered in the new ANSI B32.100-2005 standard.
ISO Tolerances for Shafts (I SO 286-2) Nominal Shaft Sizes (mm) over 3 6 10 18 30 40 50 65 80 100 120 140 160 180 200 225 250 280 315 355 inc. 6 10 18 30 40 50 65 80 100 120 140 160 180 200 225 250 280 315 355 400 micrometres a12-270-390-280-430-290-470-300-510-310-560-320-570-340-640-360-660
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.
The first provides the charts for the fundamental deviations (G, j, etc.) and tolerance grades (7, 8, 9, etc.), out of which the limits of the tolerance classes (H7, g6, etc.) can be calculated. ISO 286-2 is a collection of dozens of charts that tabulate the size limits for all the tolerance grades.
shaft tolerance table (iso) ≥ ＜ b10 c9 d8 e7 e8 f7 g7 h6 h7 h8 js7 k7 m7 n7 p7 r7 s7 t7 - 3 +180 +140 +85 +60 +34 +20 +24 +14 +28 +14 +16 +6 +12 +2 +6 0 +10 0 +14 0 ±5 0-10-2-12-4-14-6-16-10-20-14-24-3 6 +188 +140 +100 +70 +48 +30 +32 +20 +38 +20 +22 +10 +16 +4 +8 0 +12 0 +18 0 ±6 +3-9 0-12-4-16-8-20-11-23-15-27-6 10 +208 +150
The document discusses the ISO System of Limits and Fits, which is an international standard for hole and shaft tolerances used in manufacturing. It describes the preferred hole and shaft basis fits, which include clearance fits (H11, H9, H8, H7) and shaft tolerances (h11, h9, h7, h6).
Complete charts for H7/h6 Clearance Fit per ISO 286, including size limits for hole and shaft and clearance classification data.
