Shrink-Fit Tool Holders include DIN designs.
Press Release Summary:
HSK tool holders utilize Form A shanks that conform to DIN 69882 Standard. They are coolant-through holders with axial adjustment screws. Production balancing is standard and dynamic balancing is optional. Shrink-fit holders are offered in inch and metric bore sizes in USA and DIN designs. Standard, extended, and extra-extended length sizes in CAT 40 and 50 V-flange shanks are available. Tapers are ground to ISO-1947 AT3 taper tolerances.Original Press Release:
T.M. Smith Tool Expands Shrink-Fit Tool Holder Line To Include New DIN Designs
Shrink-fit tool holder technology, has made a major impact in metalcutting since it was originally developed. The aerospace industry was first to take advantage of the performance benefits of induction heating the tool holder and shrink-fitting a cutting tool with a very close interference fit into it. The concentricity, for example, of shrink-fit tooling is consistently 0.0002-inches or better, improving balance and providing excellent rigidity for the tool and tool holder whether the holder is V-flange, CAT, BT or HSK. As a result, higher speeds and feeds can be obtained while maintaining and improving spindle life. Claims are made that the induction heating process is reversible up to 50,000 times for an individual tool holder, although many of those claims are yet to be proven, or realistically may not ever need to be.
The automotive industry has been close behind in applying shrink-fit technology and has really been a driving force for other tool holder manufacturers to either license the existing technology or figure out some other way to work around the existing technology patent. So what exists today is an ever widening offering of the original patented technology from differing tool holder sources plus several other tool holder manufacturers who are offering an alternative induction heating process. In fact, a new DIN standard for the tool holders is now close to being issued and T.M. Smith is already offering tools that conform to this DIN 69882 Form H proposed standard. The new DIN standard is similar to the USA design except for the rate of taper on the exterior and the fact that they are supplied with preset screws.
Today, T.M. Smith is offering shrink-fit holders in inch and metric bores in USA and DIN designs. Standard, extended and extra-extended length sizes in CAT 40 and 50 V-flange shanks are available. These V-flange designs are production-balanced and conform to ANSI Standard B5.50. The tapers are ground to ISO-1947 AT3 taper tolerances. Coolant is thru the tool holder with an axial adjustment screw.
The new HSK shrink-fit holders utilize "Form A" shanks that conform to the DIN 69882 Standard. These are coolant-thru holders with axial adjustment screws. Production balancing is standard. Dynamic balancing is optional. The HSK shrink-fit tool holders are available in HSK-63A and HSK-100A stub length sizes; HSK-32A, HSK-40A, HSK 50A, HSK-63A, and HSK-100A standard lengths in USA designs. They area also available in HSK-32A, HSK-40A, HSK-50A, HSK-63A and HSK 100A metric bore extended length
sizes. Inch and metric bore standard length sizes with the DIN design are available in 50A, 63A, 80A and 100A standard lengths.
T.M. Smith Tool International Corporation was founded in the 1957. It is a leader in the design and manufacture of quick change tool holders for drilling, reaming and tapping. Overtime it has become well known, particularly in the worldwide automotive industry, for quality and innovative design and engineering. The company currently holds over 60 U.S. and international patents in tool holding technology.
Send inquiries to:
Gerald R. Norton,
T.M. Smith Tool International Corp.
306 Hubbard Avenue
Mt. Clemens, MI 48046
Telephone (810) 468-1465
Fax (810) 468-2299
