Table of Contents
What does CAT 40 stand for?
Well-known among professionals and widely-used, CAT tooling can be found in different sizes: CAT30, CAT40, CAT45, CAT50, CAT60, etc. The number represents the size of the taper holder, which is standardized by the Association for Manufacturing Technology (AMT). The higher the number, the bigger the taper.
What is BT tool?
BT tool holders use metric thread pull studs (retention knobs). Though both standards use the same NMTB body taper, BT tool holders are symmetrical around the main spinning axis while CAT tool holders are not. That makes BT tool holders better balanced and more stable at higher speeds.
What’s the difference between cat 40 and BT40?
CAT40 VS BT40, there are 3 main differences: The length of the taper is different. BT40 toolholder has a slightly shorter taper by about 4mm. This effectively reduces the contact area in the spindle and means BT uses longer studs. So two different studs for CAT40 and BT40 are needed.
What is sk40 taper?
As Don says, SK 40 is Steil Kegel 40 (Steep Taper 40 in English) and has exactly the same meaning as # 40 taper. They may exist but I have never seen a 40 taper tool holder without drive slots. Cat V-Flange, BT, DIN 2080 or DIN 69871 have different configurations of the drive slots.
What does HSK stand for in machining?
HSK is a German acronym that means “hollow taper shank” and serves as the hollow taper interface that connects to HSK machines using flange contact.
What is the difference between cat 50 and BT 50?
The difference between CAT and BT is the flange style, thickness, and the thread for the pull stud is a different size. BT Tool Holders use Metric thread pull studs (retention knobs).
What is the name of tool holder?
Tool holders (toolholders) are the main facet that connects the machine tool to the tooling..
Is BT40 same as int40?
Differences are INT 40 has a short parallel part on the top of the taper. BT40 is just the taper, tapers are the same.
Is BT40 the same as iso40?
Differences are INT 40 has a short parallel part on the top of the taper. BT40 is just the taper, tapers are the same. Then the water gets furter muddied with ISO 40, CAT 40 etc which are all the same taper and fitting as BT40 EXCEPT for the flange with the driving dogs.
What type of taper is in the CNC machine spindle?
BT is a Japanese standard, with a taper at 7:24. BT40 and BT50 are mostly used on CNC machine tools. Because the CNC machine tool products need to achieve automatic tool change, so the spindle taper is required to be accurate and easier to fall off when the knife is changed.
What is a HSK spindle?
The HSK (Hohl Shaft Kegel, or hollow-shank taper) tooling provides dual contact between the taper and the spindle face, providing a very rigid connection that offers excellent axial and radial accuracy, especially at high spindle speeds. Dual-contact taper for high rigidity and high accuracy.