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August, 2015
Dual Function Position Sensor New from Gill
Los Angeles, CA — Gill Sensors and Controls Limited is introducing the Blade25 Inductive Position Sensor into the North American market. The Blade25 offers a non-contacting position sensing technology in an innovative design that provides both linear and rotary position feedback in a single package. The proprietary inductive sensing technology can monitor the activator’s (target) posi- tion in either a straight linear move- ment or in a curved “arc” rotary movement as it passes over the sens- ing element. Thus a single device can be used in both linear or limited angle rotary sensing applications. And, unlike Hall effect sensors, this technology is immune to outside magnetic influences, such as alterna- tors, starter motors, audio speakers or large multiphase motors. With the Blade’s dual move-
ment capability, engineers can now use just one part number when designing into their applications. The Blade25’s packaging is the same in both cases — a flat pack of sealed electronics with two mounting holes. The Blade25 is a two piece sen-
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sor that measures either ±45° of rotary movement or ±12.5mm of lin- ear displacement. In both cases there is no contact between the sensing ele- ment and the small metal “target”, which acts as the activator and attaches to the moving element in the assembly. The activator has an air gap between the second part of the sensor, which is in a solid-state sealed electronics package that is surrounded by the activator. The proprietary inductive technology eliminates the bearing and mechani- cal wear issues of conventional shaft- driven sensors by separating the position “activator” from the sensor’s electronics. This separation elimi- nates the need for precise and expen- sive bearings. And, the air gap pro- vides an unlimited mechanical life
span, as the two pieces never come in contact. This technology is well suit- ed to extremely dirty and contami- nated environments, in areas where strong magnetic fields are present, and in complex mechanical assem- blies that have tolerance and wear issues over their lifetime. The standard Blade25 Sensor is
available with Analog, Pulse Width Modulation (PWM) or Serial Output (RS232 19.2k 8N) and is specifically designed to meet stringent OEM environmental requirements with an
Dual-functuion non-contacting position sensor.
IP67 rating. It is in a thin, fully sealed 40 x 50 x 6mm package, and its robust housing uses a side cable exit with 3.4mm jacketed cable. The device uses a standard mild steel activator as the target. Alternately, OEM engineers can choose to inte- grate the activator feature into their designs for either linear stroke appli- cations, or at the end of shafts for
rotary applications. Contact: Gill Sensors and
Controls Limited, Unit 600, Ampress Park, Lymington,
Hampshire, UK SO41 8LW % +44 (0) 1590 613900 fax: +44 (0) 1590 613401 E-mail:
info@gillsc.com Web:
www.gillsc.com (In N. America) 949-287-6345 or 949-375-5975 E-mail:
paul.cain@
gillsc.com
Nook: Caged Ball Profile Rails for Linear Guidance
Cleveland, OH — Nook Industries, Inc. has introduced a caged ball pro- file rail for linear guidance. Caged ball chains provide reduced friction, lower noise levels and prevent the bearings from making incidental contact. The new product line improves
on more traditional designs with lubrication advantages, a patented reinforcement plate and an overall dustproof design. The lubrication design adds no length to the runner block and the pad contacts directly with the ball bearings. The lubrica- tion storage pad can save enough lubricant to ensure long-term effects while conforming to environmental protection needs and lowering over- all maintenance costs. Lubrication port fittings can be placed on the top, bottom or sides of the runner block and O-ring seals ensure easy and clean lubrication. The addition of two stainless steel reinforcement plates on either end of the runner block increases rigidity while adding a scraper function. With a clearance of less than 0.3mm, the plate can remove items such as iron filings from the rail and also increase x-axis
direction force capacity and increase operating speed. Dustproof design is accom-
plished through the plate design and several other advances. Newly designed inner seals slant inward at 45°, protecting against foreign objects and reducing friction. A full-
Caged ball profile rail. .
sealing bottom seal reduces oil usage by preventing lubrication leaks. Two different end-seal designs,
Standard (B) and Reinforcement (S), allow customers to choose the solu-
tion best suited to their conditions. Contact: Nook Industries, Inc.,
4950 East 49th St., Cleveland, OH 44125-1016 % 800-321-7800 or 216-271-7900 fax: 216-271-7020 Web:
www.nookind.com
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