Linear bearings that use balls or rollers to carry a load are subjected to Hertz contact stresses — a type of material stress that plays a significant role in determining the bearing’s load capacity and fatigue life. When two surfaces of different radii are in contact and a load is applied (even an extremely small load), […]
Bearing damage: What’s the difference between brinelling, spalling, and fretting?
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 […]
Full extension telescoping rails feature smooth sliding
LM76 has added a new series of 100% extension rails to their extensive product line of linear motion components and complete linear motion systems. The exclusive distributor of SAIBO Linear Motion Systems in the US, LM76, is now offering the SAIBO TDB28 and TDB43 series of Telescoping Extension Rails. Stroke lengths (extension) are 100% of […]
PHD Inc. offers linear slides that are IP54 and even IP67 rated (for washdown)
PHD Inc. offers electric Series ESU linear slides that are IP54 rated with magnetic band sealing for rugged protection. These are electric-motor and belt-driven linear actuators with a robust enclosed design and high-capacity rail bearing system to deliver exceptional moment and load capability. Available in three sizes with travel lengths to 5,500 mm (with other […]
igus linear guides help drones repel pests
One Spanish OEM has developed a drone for pest control; the design features low-weight carbon linear guides and a micro energy chain and pillow block bearings manufactured by igus. The FitoStinger was developed by the Technology & Advances Centre of Barcelona. It includes an extendable arm that allows the precise spraying of pesticides. Light maintenance-free […]
Accuride International launches online store to expand access to wide-ranging sliding solutions
Accuride International, the world’s largest designer and manufacturer of sliding hardware, today announced the launch of an online store to expand access to a wide range of its innovative, proven products to both B2B and B2C customers. “Customers have told us that they need to be able to order a broad selection of our slides anytime, […]
Precision zero clearance, smooth sliding partial extension rails
As the exclusive distributor of SAIBO Linear Motion Systems in the US, LM76 is offering the SAIBO TPE28 and TPE43 series of Partial Extension Rails. These compact, precision, smooth sliding rails are assembled with a zero clearance. The TPE28 and TPE43 Partial Extension Rail series are created using a “C” shaped external rail and an […]
THK America’s Ohio plant and MVPvets sponsorship highlight commitment to U.S.
THK America Inc. is committed to serving the U.S. market. For nearly 25 years, the leader in linear-motion guides has been manufacturing components in the United States at their Hebron, Ohio facility. This year, the manufacturer joined forces with MVPvets in assisting, preparing and transitioning military veterans for meaningful employment. More than 70% of THK […]
Why use linear guides and ball screws with ball chains?
One of the differences between radial ball bearings and recirculating ball linear guides has historically been that radial bearings typically use a cage to separate the balls and control their movement, whereas profiled rail guides did not. But in the early 2000’s, manufacturers of profiled rail bearings began introducing versions with ball cages (also referred […]
Basics of cam followers (including those for linear motion)
Cam followers are power-transmission devices with a rotary bearing core that bears load while serving as the interface between independently moving machine sections. Applications include those on rotary indexing tables and turntable conveyors, long-stroke robot transfer units (RTUs), and an array of highly customized machinery. The outer diameter (OD) of the cam-follower bearing assembly is […]
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