ASME B29.22:2001 pdf free download

ASME B29.22:2001 pdf free download.DROP FORGED RIVETLESS CHAINS, SPROCKET TEETH DRIVE CHAIV/DRIVE DOGS.
3 MINIMUM ULTIMATE TENSILE STRENGTH
Minimum Uhimate Tensile Strength (M .U.T.S.) for chains covered by this Standard, is the minimum force at which an unused, undamaged chain could fail when subjected to a single tensile loading test.
(a) WARNING: The ininin,um ultimate tensile strength is NOT a “wor*sng load.” The M.U.T.S. greatly exceeds the maximum force that may be applied to the chain.
(b) Test procedure. A tensile force is slowly applied. in uniaxial direction, to the ends of the chain sample.
(C) The tensile test ix a destructive test. Even though the chain may not visibly fail when subjected to the minimu,,, ultimate tensile force, ii will have been damaged and will be unlit for service.
The values adopted for this Standard are for heat- treated medium carbon steel chain only. Medium carbon steels not in the heat-treated condition are not covered by this Standard.
Chains produced of other materials not covered in this Standird (alloys, stainless steel) or by casting or fabricating will also have signilicantly different values of M.U.T.S.
10 SPROCKETS
Two sprocket tooth forms arc included: Forms A and B. The major difference between thesc two forms is in the method of generating the tooth form. Form A produces a curved tooth face and Form B a srraigh tooth face. Either fonn may be used. See Tables 5. 6. and 7. and Figs. 6 and 7.
10.1 Sprocket Tooth Form Data
Root diameter (D,). pocket radius (Rn). and outside diameter (D,,) must not exceed the values obtained by the formulae. Oversite dimensions may cause improper chain and sprocket interaction and excessive chain loads (see Fig. 6).
In some cases the outside diameter (1),) may he limited by special attachments mounted on the chain. For this reason, the outside diameter (I),) should he checked to assure that interference does not exist., obtained by the formula should be rounded off to the next smallest 1/8 in. (3 mm).
Chain clearance circle (C) established by the formula is the maximum and will provide clearance under most conditions. However, the value obtained by the formula should be checked w assure that a given hub diameter does not interfere with chain attachments.