Although there are no industry standards that define linear actuators and linear stages, generally accepted terminology indicates that a linear actuator is typically constructed with an aluminum extrusion or base, while a linear stage is typically built on a flat, machined steel or granite base. This distinction implies that linear actuators can typically provide longer […]
Why use a multi-start ball screw?
The easiest way to get higher speed from a ball screw assembly (within the screw’s critical speed limit, which is based on diameter, length, and end fixity) is to use a higher screw lead. But increasing the lead of the screw has a drawback: as the lead increases, the number of effective turns in the […]
Dynatect expands precision ground ball screw capabilities with new end cap ball return design
Replacing precision ground ball screws on legacy equipment is complicated by the dissolving of original manufacturers and by product customizations. Offering multiple types of ball screw return designs provides the flexibility needed to keep older equipment running. The long life of machine tool equipment has resulted in machine tools which are often older than their […]
ECO series linear stages provide lowest cost of ownership in linear motion
The ECO linear stage series builds upon Aerotech’s long tradition of producing low total cost of ownership motion designs. Excellent positioning specifications, high stiffness, and a variety of options and features combined with economic pricing make ECO stages an ideal choice for applications where robust motion performance is needed. Quality mechanical construction Long-life precision recirculating […]
Lead screw selection: What should I consider besides diameter and lead?
Once you’ve gone through the process of sizing a lead screw, you know what diameter and lead will provide the required load capacity, speed, and back driving torque for the application. But there are hundreds — maybe thousands — of lead screw designs on the market. Beyond the basics of diameter and lead, how do you […]
New high load capacity BG actuator from NB
NB Corporation presents a compact, single axis actuator with a unique “U” shaped integrated slide guide and ball screw. The BG actuator’s highly rigid structure may be one-end supported, and the four ball circuits contained in its slide block deliver high load capacity, accuracy, and rigidity. To accommodate a wide range of installations and applications, these […]
New linear motor designs improve speed and positioning
Linear motors enable maximum precision and dynamic performance in various motion control tasks. These include not only rapid traverse, but slow, constant speed traverse of machine heads, spindle slides, tool management systems, part handling devices and more. There are considerable cost savings to be realized when various mechanical components are replaced by simple and efficient […]
Lead screw sizing in 4 steps
Lead screw sizing is a bit of a hybrid exercise, with similarities to the process of ball screw sizing, but incorporating some of the considerations that come with sizing a plain bearing. While many factors are involved in the selection of a specific lead screw assembly, lead screw sizing — choosing the right diameter and […]
How do I calculate the PV value for a lead screw application?
Lead screws rely on sliding friction between the nut and the screw to convert rotary motion into axial (thrust) force to move a load. Most lead screw designs use either a carbon steel screw with a bronze nut, or a stainless steel screw with a plastic nut. In either case, there are no recirculating balls […]
Bishop-Wisecarver Selected as Advanced Manufacturing Finalist in 2018 East Bay Innovation Awards
Bishop-Wisecarver, a trusted industrial automation company offering proven motion solutions that are expertly designed and delivered to perform, announced its selection as a finalist in the Advanced Manufacturing category of the 6th Annual 2018 East Bay Innovation Awards. The East Bay Innovation Awards is a celebration of outstanding innovative companies and organizations in the East […]
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