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Wireless Gages

Mahr Federal, Providence, RI, has expanded its line of wireless gaging products to include a range of depth gaging products. The Digital Depth Gage MarCal 30 EWR, MarCal Specialty Caliper 16 EWR, and Universal Caliper 16 EWR all provide wireless data transmission of depth probe measurements. The Digital Depth Gage Series, MarCal 16 EWR, includes several gages designed for a variety of depth gaging tasks, including measuring groove widths and distance between grooves. All of its depth gage and caliper products offer IP67 resistance to dust, coolants, and lubricants, and are easy to use with a high-contrast digital display, locking screw, zero reset function, and immediate measurement readout. The 16 EWR Digital Caliper line offers precise depth measurement via an integrated depth rod with measuring ranges of 0–6 or 8 in. (0–150 or 200 mm) and resolution to 0.0005 in. (0.01 mm).

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Spring-Engaged Tooth Brake

SEPAC, Elmira, NY, has designed an electromagnetic spring-engaged tooth (SETB) brake to deliver reliable, consistent operation within medical applications. The power-off brake offers large bore sizes, low backlash, and a high torque-to-size ratio. Backlash within the brake is less than 0.5°. Suitable for medical applications such as robotics, scanning equipment, and treatment tables, the brake features a high number of index positions, positive engagement, and a reliable coil. Custom voltages are available. The SETB is generally half the size of a friction-style brake with similar torque ratings.

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Strain Gages

Micro-Measurements, a Vishay Precision Group, Malvern, PA, has integrated its proprietary Advanced Sensors Technology into strain gage products. According to the company, Advanced Sensors Technology applies tangible specification and manufacturing process improvements. Further design improvements over traditional strain gage types include smaller and tighter grid-resistance tolerances, improved gage-to-gage repeatability, and enhanced measurement stability. The portfolio includes linear, shear, and circular gages, arranged as individual, half-bridge, and full-bridge configurations, in ranges from 350 Ω to 20 kΩ, with added flexibility in mounting options. The technology improves grid-to-grid tolerances and matching over traditional strain gage manufacturing techniques, enabling better sensor performance.

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NK Technologies, San Jose, CA, has introduced a high-performance true RMS transducer for sensing voltage in single, three-phase, or DC installations. Housed in a 35-mm wide DIN rail mounting enclosure, the VTU-DIN measures from 0-15 to 0-600 V with an industry standard output proportional to connected voltage in AC circuits with sinusoidal or nonsinusoidal (variable frequency) applications or DC circuits. Standard outputs make the VTU-DIN reliable and easy to use with existing controllers, data loggers, and SCADA equipment. It effectively detects a wide range of conditions that may cause damage to the motor and/or soft starter components.

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Photo-Etched Screens and Filters

Tech-Etch, Plymouth, MA, photo etches custom screens, filters, and filter supports for medical devices and other uses. Photo etching enables designers to specify a straight hole or a tapered hole, which facilitates liquid filtration and back flow cleaning. Hole sizes range from 0.003 in. up. Unlike stamping, photo etching yields a burr-free product, resulting in cleaner, more efficient screens with greater material integrity. Photo-etched screens feature a tighter tolerance on hole sizes and greater dimensional stability than woven wire mesh, making them ideal in applications requiring frequent cleaning or in devices where there is mechanical contact. Unlike woven wire mesh screens, the fixed photo-etched openings do not change through use. These tight tolerance screens are primarily produced from stainless steel, but other materials, including polyimide, are available.

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Cloud CAM

MecSoft, Irvine, CA, has launched a beta program for its cloud-hosted, fully integrated CAM add-on application for Onshape’s 3D CAD system. VisualCAMc is a production-level CAM app that is fully operated in the cloud. It requires no downloads or installs to local hardware. The company’s computer-aided manufacturing (CAM) software is designed for custom manufacturing, rapid tooling, and mold making.

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