A ball screw spline is a combination of two components — a ball screw and a rotary ball spline. By combining a driving element (the ball screw) and a guiding element (the rotary ball spline), a ball screw spline can provide both linear and rotary … [Read More...] about What’s the difference between a ball screw spline and a traditional ball screw?
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How to size a spline shaft: Shaft strength in bending and torsion
Choosing a shaft for a traditional linear ball bushing is relatively easy — choose the appropriate diameter, material, and hardness, check the dimensional accuracies and tolerances, and if the shaft … [Read More...] about How to size a spline shaft: Shaft strength in bending and torsion
How to calculate bearing life for a ball spline
A ball spline is much like a linear ball bushing and shaft, but with axial grooves along the outer diameter of the shaft and the inner diameter of the nut. These grooves prevent rotation … [Read More...] about How to calculate bearing life for a ball spline
What is stepper motor resonance and how can it be avoided?
The discrete, step-by-step movements that give a stepper motor its accurate positioning capability can also lead to some undesirable performance characteristics — namely, vibration and audible noise … [Read More...] about What is stepper motor resonance and how can it be avoided?
Linear guide handles higher loads, misalignment
Rollon has introduced its Compact Rail Plus — part of its new generation of high-performance linear guides. This rugged unit features a new design to handle higher loads while maintaining the Compact … [Read More...] about Linear guide handles higher loads, misalignment
New ball screw selection tool streamlines online product selection
Thomson Industries, Inc., has launched a new online selector tool that simplifies and streamlines the purchasing experience for its precision ball screws. The tool helps design engineers zero in on … [Read More...] about New ball screw selection tool streamlines online product selection
Nanopositioning controller for piezo stages boasts 270-W peak power, nanometer-level precision
A high-power version of PI’s (Physik Instrumente) E-727 family of multi-axis piezo nanopositioning controllers provides 270 W of peak power – close to 10X of the standard version. The enhanced … [Read More...] about Nanopositioning controller for piezo stages boasts 270-W peak power, nanometer-level precision
What are the differences between incremental and sine-cosine encoders?
Encoders that provide incremental position measurements (whether rotary or linear) output two signals, or channels, typically termed "A" and "B," to provide position and direction information. These … [Read More...] about What are the differences between incremental and sine-cosine encoders?
Highly dynamic AL8000 linear motors provide flexible, modular design
Backed by its wealth of expertise in the development of rotary servomotors, Beckhoff has added an innovative product to its portfolio in the area of drive technology. The AL8000 series, a new … [Read More...] about Highly dynamic AL8000 linear motors provide flexible, modular design
Linear actuators automate shampoo-bottle filling with less drips
Consider the equipment that fills shampoo bottles. Such filling machines use conveyors to transport empty bottles to sensor-tracked wait positions. Then they insert shampoo-dispensing nozzles into the … [Read More...] about Linear actuators automate shampoo-bottle filling with less drips
Industrial gas springs help in fight against COVID-19
Gas springs, also called gas dampers, tension springs, gas-pressure springs depending on the setup and context, are compressed-air or oil cylinders that install in motion designs to damp forces and … [Read More...] about Industrial gas springs help in fight against COVID-19
How to calculate linear ball bushing life (and how it differs from other life calculations)
The standard life calculation for linear ball bearings is widely known as: L = bearing life (m) C = rated dynamic load (N) F = applied dynamic load (N) But linear ball bushings often … [Read More...] about How to calculate linear ball bushing life (and how it differs from other life calculations)
Round-rail linear guide or profile-rail linear guide?
In this article, we outline how to choose a linear guide for your application and environment. By Lindsey Brimage and Eric Schultz | Thomson Industries Ian Miller | Motion Industries … [Read More...] about Round-rail linear guide or profile-rail linear guide?
X-Y gantry with precision ball screw actuators
A new overhead XY gantry from IntelLiDrives is built with precision ball screw actuators. The gantry features travel lengths from 100 to 600 mm, with speeds to 100 mm/sec and resolution to 5 … [Read More...] about X-Y gantry with precision ball screw actuators
How does shaft hardness affect the life of a linear ball bushing?
A linear ball bushing riding on a round shaft is often compared to a radial ball bearing, with the bushing acting as the outer race of the bearing and the shaft acting as the inner race. But in linear … [Read More...] about How does shaft hardness affect the life of a linear ball bushing?
What are stroke ball splines and how do they differ from standard ball splines?
Standard ball splines use balls that recirculate within a nut, or housing, similar to that of a recirculating ball linear bushing. But the mechanisms and geometry required for ball recirculation … [Read More...] about What are stroke ball splines and how do they differ from standard ball splines?
