ลักษณะการใช้งานตลับลูกปืนเม็ดเข็มดรอว์นคัพ

???????????????????????????       ??????????????????????????? (Drawn-cup needle roller bearing) ???????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????? ISO ????????????????????????????? 2.5 ???????????????????????????????????????????????????????????????????

read more

ลักษณะการใช้งานตลับลูกปืนเม็ดเข็มดรอว์นคัพ

???????????????????????????       ??????????????????????????? (Drawn-cup needle roller bearing) ???????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????? ISO ????????????????????????????? 2.5 ???????????????????????????????????????????????????????????????????

read more


เพราะเหตุใดพรีคาสท์คอนกรีตสำเร็จรูปถึงนิยมนำมาสร้างโกดัง โรงงาน

        ??????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????  ??????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????????????? ????????????

read more

สปริงกด (Compression Spring)

??????? ?????????????????????? ??????????????? ??? ?????? ????? ????? ?????          ??????? ???? ???????? ?????????????????????????????????????? ????? ?????? ????????? ??????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????? ?????????????????? pitch ??? ????????????????

read more