TAP HOLDERS
TAPPING - TECHNICAL DETAILS
Tap Shank Standards • Tap shanks are manufactured to many international standards, each specified by their country of origin. Although most taps sold in North America comply with the ANSI B94.9 standard, we appreciate your assistance to help further qualify the matching tap collet necessary by providing the round shank size and the drive square dimensions.
• Please note not all taps were designed to be held in a tap collet compliant to ANSI, ISO, DIN or JIS standards. Please call us to discuss more
alternatives for tapping. Tap Collet Systems
• All Lyndex-Nikken tap collets are based on the “Bilz” standard quick-change system and will interchange with other manufacturers compliant to the same standard. • Lyndex-Nikken does not offer tap collets for the Intertap system. • Please take into consideration the nature of each application before determining which system (system 1,2 or 3) suits your needs. If the same tap collet size is offered within two different systems, we recommend that harder materials should utilize a larger tap collet series to help sustain the required torque capacity and rigidity for the operation. Rigid Tap Holders • Rigid Tap Holders should only be used on equipment that have the ability to synchronize spindle rotation and spindle feed, commonly referred to as “Direct Tapping”, “Rigid Tapping” or “Electronic Lead Screw Tapping”. • Rigid Tap Holders do not have the tension and compression ability as a traditional float mechanism and therefore offer no protection from overloads such as under-sized holes, wornout taps or misplaced cored holes in castings. • The use of Rigid Tap Holders on non-synchronized machinery will result in poor threads and/or damage to tapping holder or collets.
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