BS ISO 24035 pdf free download
BS ISO 24035-2014 pdf free download.Belt drives — V-belts and the corresponding pulleys for agricultural machineries — Dimensions.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 1081, Belt drives — V-belts and V-ribbed belts, and corresponding grooved pulleys — Vocabulary
ISO 4183, Belt drives — Classical and narrow V-belts — Grooved pulleys (system based on datum width)
ISO 5290, Belt drives — Grooved pulleys for joined narrow V-belts — Groove sections 9N/J, 15N/J and 25N/J (effective system)
ISO 5291, Belt drives — Grooved pulleys for joined classical V-belts — Groove sections AJ, BJ, CJ and DJ (effective system)
ISO 9982, Belt drives — Pulleys and V-ribbed belts for industrial applications — PH, PJ, PK, PL and PM profiles: Dimensions
3Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1081 apply.
4 Symbols
For the purposes of this document, the symbols given in ISO 1081 apply.
5 Belt cross-sections and nominal dimensions
The belt cross-section is characterized by the top width, W, and height, h b . In the case of joined V-belts and V-ribbed belts, the cross-section spacing is also relevant. The angle of the belt sides is usually 40° except in the case of variable speed belts where the angle is commonly 32° but may be different on some applications.
The nominal dimensions of belt cross-sections are shown in Table 1 and Figure 1.
The belt cross-sections supplied by different manufacturers may vary slightly due to manufacturing methods and/or the tooling used. All belts of a given cross-section shall work in the pulley grooves specified in this International Standard for that section.
6 Belt lengths 6.1 V-belts, banded, or joined belts and variable speed belts for agricultural machinery traditionally identify length using “effective outside length” whereas similar belts for industrial machinery may use “datum length”. Effective outside length shall be measured at a position on the measuring pulleys where the groove top width is a closely specified value (see Table 5).
Datum length shall be measured at a position within the grooves of the measuring pulleys where the datum width is a closely specified value. The datum width is set to coincide approximately with the neutral axis of the belt section. There is a direct relationship between the belt effective outside length and its datum length. Please consult the belt manufacturer.
6.2 Hexagonal section V-belts for agricultural machinery identify length using “effective length”. Effective length shall be measured on the same pulleys used for measuring classical section belt effective outside length and is close to the length of the belt at the widest point of the section.
6.3 Ribbed belts identify length using “effective length”. Effective length shall be measured at the outside diameter of the measuring pulleys and is therefore close to the belt length at the bottom of the grooves between the ribs.
7 Belt length measurement method — Manufactured belt dimensions
7.1 Belt length shall be determined using a measuring fixture as illustrated in Figure 2, consisting of two pulleys of equal diameter having groove dimensions as specified in Tables 5 and 6. Both pulleys are free to rotate. One of the pulleys has a fixed centre while the other can slide horizontally under the action of a measuring force applied horizontally through the sliding pulley centre.BS ISO 24035 pdf download.
