Общий каталог Yamawa 2021 - страница 547

• Copertina
• Capitoli web
• Parte finale web

Special Threads, Gauges Intro SIT Inspection Tools SP Simple Thread Inspection Tools SL HSS FEATURESHSS material increases considerably the gauge life. PO ST ROLL YMW-SIT Product Features CARBIDE - SIT can minimize the inspection process time and improve the inspection efficiency by adopting step screw thread. - Premium HSS material extends the tool life dramatically. - Tool for through hole or blind hole is available individually. - Color case and color mark on the tool simplify tool storage control. LONG Inclination -What is the step screw thread? -YAMAWA new thread gauge (for through hole) features a step screw thread on its end allowing the gauge to enter easily the internal screw and work efficiently particularly HAND when checking fine pitches screw threads.TAPSNote : Step screw thread is not applied to the gauge for blind hole (NP gauge) Details of stepscrew thread EG (STI) Accuracy of SIT Simple pitch diameter tolerance, pitch tolerance and thread half angle tolerance, are 3 important factors on measuring internal screw threads. For SIT and thread plug gauge these values are the same. SPECIAL Comparison between GB-6H/and GP-6H/thread plug gauge Comparison between NB-6H/and NP-6H/thread plug gauge THREADS, GAUGESYMW ODSize PD PitchtoleranceTolerancefor threadhalf angleSizeOD PD Pitchtolerance Tolerancefor threadhalf angle THREAD BasicsizeMax Min Tol. BasicsizeMaxMin Tol. (±) (±minute) BasicsizeMaxMin Tol. BasicsizeMax Min Tol. (±) (±minute) MILLS GB-6HM6×1 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 NB-6HM6×15.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 0.005 16 GP-6HM6×1 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 NP-6HM6×15.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 0.005 16 DIES The pitch diameter is simple pitch diameter. Pitch tolerance includes error of thread lead. Main specification of SIT is same with that of thread gauge. But SIT has partly Yamawa's own design in the length of thread and bottom part relief. Due to these features, Yamawa has adopted the name "Simple Inspection Tool or SIT" instead of using the name "thread gauge". CENTER DRILLS Technical info 548 Pitch diameter of first thread profile Pitch diameter of gauge thread profile