A crossed roller bearing is a type of rotary bearing that uses cylindrical rollers arranged in a crisscross pattern, with each roller oriented at a 90 degree angle relative to the one adjacent to it. This arrangement allows crossed roller bearings to withstand radial, axial, and moment loads, so they can often replace dual-bearing arrangements, for […]
Mechanical PT
Lee Spring acquires M & S Spring, advancing rapid prototype spring capabilities
Lee Spring has acquired Michigan-based M & S Spring. M & S Spring, located in Fraser, Michigan, specializes in rapid prototype custom springs that require quick turnaround with quantities ranging from a single piece to higher volume pilot runs. Steve Kempf, CEO of Lee Spring, commented that “the acquisition of M & S Spring expands […]
Wafer-handling machine maximizes performance with specially clamping belt-pulley and bushing assembly
In one recent machine redesign, Florida-based machine builder Hine Automation added precision engineered pulley-bushing assemblies to their SL-200C Vacuum Cassette-to-Cassette-Wafer Handling System for a boost in performance. This machine’s function is to transfer silicon wafers from a wafer cassette to a wafer process module under vacuum. The moves are commanded by computer controls. Hine Automation […]
More about what it means for servo brakes to have functional-safety certification
In the article What are functional safety standards for servo drives? we review how functional safety is quantified. Now consider one example of a spring-set pneumatically released friction servomotor brake now having a third-party safety rating (from Intertek Group) certifying compliance with international safety standard ISO 13849-1. Intertek is an international London-headquartered inspection, assurance, product […]
Power-off engaged brakes for conveyor applications
Miki Pulley’s latest model BXW power-off engaged brakes are designed to halt a motorized conveyor roller when system power is disengaged. These new BXW brakes are spring-actuated electromagnetic brakes. They provide reliable dynamic braking when conveyor power is disengaged and excellent performance for longer-term holding requirements for staging, loading and unloading conveyor operations. BXW brakes […]
Inductive proximity and magneto resistive sensors enhance IoT4.0 connectivity for Nexen brake families
Nexen Group, Nexen Servo, Rail, and ZSE brake lines now have Industry 4.0 connectivity sensor options to enhance machine efficiency. Multiple sensors integrated into the brake families provide information about brake operation and health to the control system network. The sensors used in the spring-operated air-released ZSE brakes provide operation information such as brake engagement […]
Podcast: Dave Hein of Nexen Group on brakes having functional safety certification
In our most recent Technology Tuesdays podcast, Dave Hein — senior vice president and engineering and chief technology officer at Nexen Group — chatted with us about three brake options that now have Functional Safety certification. Listen in: Design World · Brakes with Functional Safety certification: Update from Nexen Group engineer Dave Hein According […]
How do shear pin torque limiters work and when are they used?
Shear pin torque limiters are a simple, cost-effective design for protecting equipment from torque overloads. In their most basic form, they incorporate a pin (or, for very high torque ratings, multiple pins) inserted between two rotating elements, such as discs or flanges. When torque is being transmitted from the driving to the driven load, the […]
Goodyear producing new line of power transmission belts
Goodyear Belts, a licensee collaboration between Adventry and The Goodyear Tire & Rubber Co., has produced a line of power transmission belts targeting the demands of multiple markets globally. The line is being launched on December 1, 2020 and will offer belts for both industrial and transportation markets. “We are thrilled to collaborate with such […]
How do ball detent torque limiters work and when are they used?
Rotating equipment such as motors, gearboxes, and fans can experience a torque overload if the system encounters an unexpected malfunction such as a jam or crash of the driven load. One way to protect these expensive components — and to avoid physical injury to personnel — is to install a torque limiter in the drive […]