ER Collet Chucks Provide High Concentricity, Holding Power
T.M. Smith Tool has added Jacobs taper rigid ER collet chucks to its family of Jacobs taper tooling.
T.M. Smith Tool has added Jacobs taper rigid ER collet chucks to its family of Jacobs taper tooling. These durable collet chucks are manufactured from premium-grade, through-hardened steel. The ER collet pockets are precision-ground to provide total indicator runout of 0.0002" or better. The company says that these collet chucks provide better concentricity and holding power than keyed and keyless drill chucks.
Available with a Jacobs taper #1, #2, #33 and #4 (JIFFY), these holders are primarily used in drilling applications. They are compatible with standard Jacobs taper spindles and accept standard ER collets. The chucks are available in ER16, ER20 and ER32 versions. Specials are always available to meet customer-specific needs. ER collets are ordered separately.
Hummingbird takes on machining work that is too small for most shops to handle. In fact, Hummingbird tries not to handle it either. To accurately machine the tiniest parts, this shop relies on processes that are as hands-off as possible.
Companies concerned about strict quality requirements regularly check toolholder tapers for wear or inaccuracy because these conditions can jeopardize the results of a critical operation. However, a shop can check tapers quickly and reliably with air gages. These devices can be used effectively without special operator training. For measuring taper in a production environment, few other methods can match the speed and performance of air, as multiple-circuit air jets can be placed in very small taper gages.
A system to be marketed in 2015 will apply ultrasonic vibration from within the toolholder to reduce cutting force and improve the performance of the cut.