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Linear Motion Tips

Covering Linear Motion Systems, Components and Linear Motion Resources

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Linear drives (all)

What is a follower nut, and what role does it play in lead screw operation?

October 11, 2019 By Danielle Collins Leave a Comment

Although the idea of a “follower nut” may seem to indicate that the nut serves a passive role in lead screw operation, it actually plays an important part in monitoring the condition and life of the screw assembly. The wear characteristics of a lead screw nut make the expected service life of the assembly difficult […]

Filed Under: Ball + lead + roller screws, Ball + leadscrew driven, FAQs + basics, Featured

When to use linear bearings and ball nuts with ceramic balls

September 17, 2019 By Danielle Collins 1 Comment

Filed Under: Applications, Ball + lead + roller screws, Ball + roller guides, FAQs + basics, Featured

Ball nut preload: What effect does it have on bearing life?

September 11, 2019 By Danielle Collins Leave a Comment

Ball nut preload offers several benefits to screw assemblies, but the most common reason for using a preloaded ball nut is to reduce axial play, or backlash, caused by clearance between the screw and nut raceways. Reducing this axial play does two things. It improves the repeatability of the screw assembly — meaning the assembly […]

Filed Under: Applications, Ball + lead + roller screws, FAQs + basics, Featured

Pick-and-place applications with Festo tools — showing at Pack Expo

August 28, 2019 By Lisa Eitel Leave a Comment

Festo offers software and hardware to shorten packaging-machine development time and reduce engineering overhead. These components, systems, and software tools will be on display at Pack Expo on September 23 to 25 at the Las Vegas Convention Center Booth LS-6349. Design a pick-and-place robot and control cabinet in minutes Festo demonstrates a Cartesian robot and […]

Filed Under: Applications, Featured, Integrated Linear Systems, Linear actuators (all), Linear drives (all), Pneumatic cylinders, Stages + gantries Tagged With: festo

How roller-screw and ball-screw actuators compare in high-force applications

August 2, 2019 By Lisa Eitel Leave a Comment

As electric rod-style actuators overtake fluid power in a variety of high-force applications, it is important to understand how different screw technologies compare in the search for optimum performance and low life-cycle cost. By Daniel Schmit • Product Manager | Tolomatic Inc. Electric-rod actuators with either roller-screw or ball-screw technology are playing an expanding role […]

Filed Under: Ball + lead + roller screws, Featured, Integrated Linear Systems, Linear actuators (all)

Bearing damage: What’s the difference between brinelling, spalling, and fretting?

July 26, 2019 By Danielle Collins 2 Comments

Bearing damage, and ultimately, failure, can be caused by a variety of conditions, including improper mounting, poor lubrication, and overloading, to name a few. The mode of damage — what actually happened to the bearing as a result of detrimental conditions — is characterized by visible features, such as discoloration, wear marks, or pitting, on […]

Filed Under: Applications, Ball + lead + roller screws, Ball + roller guides, FAQs + basics, Featured

Exlar GTX now with Hiperface DSL Stegmann absolute encoders

July 11, 2019 By Danielle Collins Leave a Comment

GTX

Curtiss-Wright Corporation’s Industrial Division announced that its Exlar facility, located in Chanhassen, MN, has added Hiperface DSL Stegmann absolute encoders as a part of their available Rockwell Automation feedback options. The GTX series joined the Exlar TTX, Tritex II, GSX, FTX, and K series Encompass product families in 2018. As an Encompass Partner, Curtiss-Wright and Rockwell […]

Filed Under: Ball + lead + roller screws, Industry news, Linear actuators (all) Tagged With: curtiss-wright, curtisswright, exlar

When to consider Kevlar reinforced belts for linear motion applications

July 5, 2019 By Danielle Collins 1 Comment

Both types of belts commonly used in linear positioning applications — V-belts and synchronous designs — have internal tensile cords that serve as the primary load-carrying component. Or, as one engineer from Gates Mectrol put it, the tensile cords are the “muscle” of the belt. V-belts and synchronous belts are offered with tensile cords of various materials, including polyester, […]

Filed Under: Applications, Belt + chain driven, Belt + chain drives for linear, FAQs + basics, Featured

How to calculate motor drive torque for belt and pulley systems

June 7, 2019 By Danielle Collins 1 Comment

Belt driven linear systems are common in applications that require long travel and high speed, such as gantry robots and material handling and transport. The motors of choice for these systems are often servo motors, for their ability to accurately control position, speed, and torque. Sizing and selecting the servo motor requires determining both the continuous […]

Filed Under: Applications, Belt + chain driven, Belt + chain drives for linear, FAQs + basics, Featured

Using software for designing and sizing motion-control systems

June 4, 2019 By Lisa Eitel 1 Comment

Today servomotors abound. Thankfully the art of using speed, torque, and inertia to select from these servomotor offerings for specific applications has become quite automated. By Sixto Moralez • Regional motion engineer | Yaskawa America Inc. Drives & Motion Div. Now, certain sizing and selecting software only requires that design engineers enter a minimum of […]

Filed Under: Applications, Ball + lead + roller screws, Featured, Integrated Linear Systems, Linear drives (all) Tagged With: yaskawa

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