DIN 7753-1-1988 Endless narrow V-belts for mechanical engineering purposes dimensions《机械工程用环形窄三角皮带 第1部分 尺寸》.pdf
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1、January 1988 UDC 621.85.052.42 : 621.9 DEUTSCHE NORM Endless narrow V-belts for mechanical engineering purposes Dimensions I 7753 Pari 1 Endlose Schmalkeilriemen fur den Maschinenbau; Mae Supersedes October 1977 edition. In keeping with current practice in standards published by the International Or
2、ganization for Standardization (ISO), a comma has been used throughout as the decimal marker. See Explanatory notes for connection with International Standard IS0 4184 - 1980 published by the International Organization for Standardization (ISO). Dimensions in mm 1 Scope and field of application This
3、 standard specifies the characteristics of endless narrow V-belts, abbreviated below to belts, for mechanical engineering purposes. 2 Terminology 2.1 Pitch width of belt, b, The pitch width of a belt, b, is understood to be the width of the belt at its pitch zone (neutral zone). The width remains th
4、e same when the belt is bent perpendicularly to its base (from: DIN 7719 Part 1, October 1985 edition). 2.2 Datum length of belt, L, The datum length of a belt, L, is understood to be the length of the belt at the level of the datum diameter of the measuring pulleys whilst the V-belt is at a prescri
5、bed tension (from: DIN 7719 Part 1). Continued on pages 2 to 5 Beuth Verlag GmbH. Berlin. has the exclusive right of sale for German Standards (DIN-Normen). DIN 7753 Part 1 Engl. Price group 09.88 Sales No. O106 I Page 2 DIN 7753 Part 1 Belt section Top width Pitch width, =z symbol of belt, bo bw 3
6、Dimensions and designation The belt profile is not expected to conform to the design illustrated here; compliance is only required in the case of the dimensions specified. The angle of the belt has not been specified, Datum diameter of the h associated pulleys, as in Height of belt, smallest permiss
7、ible DIN 2211 Part 1 4 min. 7 XPZ SPA XPA SPB Figure I. Belt profile 9.7 8.5 8 50 12,7 11 10 90 12.7 11 9 63 16,3 14 13 140 Designation of a narrow V-belt, belt section XPZ, with a datum length,l, of 710 mm: s PC XPC Narrow V-belt DIN 7753 - XPZ 710 22 19 18 224 22 19 18 160 Table 1, Belt dimensions
8、 Wrapped Raw edged, notchedl) Wrapped Raw edged, notched) Wrapped Raw edged, notched) Wrapped Raw edged, notched 1 ) 100 l3 I 1) Raw edged belts may also be installed where up till now wrapped belts have been required. 1 DIN 7753 Part 1 Page 3 Table 2. Belt lengths and belt matching tolerances for b
9、elts of the same set Belt type Datum length,L, 2 500 k 25 Permissible difference between the datum lengths of the belts of one and the same set in the case of multi-belt drives Page 4 DIN 7753 Part 1 4 Material, design and finish The material of the belt, its design and finish shall be at the discre
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