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Ceramic
gearhead
Maxon Precision Motors Inc.,
Burlingame, Calif. |
A new 26-mm planetary gearhead is claimed to achieve
significantly higher performance and lifetime than conventional all-metal
gearheads. There are 55 different ratios for speed multiplication or torque
reduction, ranging from 3.8:1 to 4,592:1, with efficiencies from 42 to 84
percent depending on the ratio. Maximum continuous torque is up to 2 Nm,
or 3 Nm on an intermittent basis. Weights vary from 42 to 94 g, and lengths
from 29.2 to 56.4 mm. Ball bearings are used to achieve a maximum radial
load of 70 N at 10 mm from flange. Maximum axial load is 100 N. Recommended
input speed is less than 8,000 rpm. Operating temperature range is -15°
to 80°C. Gearheads are available mounted to the manufacturer's brush
or brushless motors, which are also available with encoders.
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High-output
load cell
Sensotec Inc.,
Columbus, Ohio |
The Model 49 is an ultra-precision pancake-style
tension/compression load cell and pull plate capable of generating an output
of 4 mV/V with excitation of 10 V dc and accuracy to 0.02 percent across
ranges from 250 to 200,000 lbs. Amplifier options provide 4-20 mA or ±5
V dc outputs and allow the unit to be approved as intrinsically safe by both
Cenelec and CSA. Operating temperature is from -65° to 200°F,
compensated from 0° to 150°F. The device, fully welded and manufactured
from 17-4 PH stainless steel, has a full-scale deflection of less than 0.005
in. and an overload capacity of 150 percent. Weatherproof and submersible
cable configurations are available, as are ASTM E74 calibration, signature
calibration, load button, and overload stops.
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Alignment
measuring device
Ludeca Inc.,
Miami, Fla. |
 Boralign,
manufactured by PrŸftechnik AG of Ismaning, Germany, provides alignment
measurement of bores and bearings in internal combustion engines, compressors,
turbines, and pumps, giving true bore center measurement, not just bore
straightness. The device measures whether multiple bores are in line with
one another and with the rotating centerline of the shaft, and measures shaft
guides in marine propulsion. A versatile bracketing system covers a range
of diameters from 5 to 30 in. The device is available as a stand-alone system
or as an add-on package to the Rotalign PRO laser shaft alignment system.
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Mass
flow controllers
Parker Hannifin Corp.,
Pneutronics Div.,
Hollis, N.H. |
QuickDraw mass flow controllers are intended for
medical and analytical instrumentation applications, with precise analog
control and fast response time (less than 100 msec to arrive within 1 percent
of the selected flow rate). According to the manufacturer, the devices offer
automated control at a substantial cost savings over conventional MFCs, with
consistent repeatability and high reliability.
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Rotating
electrical connector
Mercotac Inc.,
Carlsbad, Calif. |
The Model 305 rotating electrical connector was
developed for industrial automatic machinery applications. According to the
manufacturer, the device offers exceptionally reliable service at low cost,
without the maintenance requirements of standard slip rings. Its conducting
resistance is less than 1 milliohm with a maximum frequency of 200 MHz. The
connection is constant and unchanged for the life of the unit.
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Signal-
powered line driver
Dataforth Corp.,
Tucson, Ariz. |
The high-performance DCP35 DIN-rail signal-powered
RS-232 line driver offers a unique combination of protection, speed, and
versatility for DIN-rail-mount industrial communication applications. The
driver allows computers, controllers, terminals, and other industrial I/O
devices with RS-232 ports to communicate with each other over extended distances
while protecting valuable equipment and signals from damage or degradation
due to ground loops, power surges, lightning strikes, and other electrical
hazards. The driver uses heavy-duty optical couplers to provide 300 V rms
continuous (500 V dc surge, 1 min.) isolation between input and output signals.
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AC
brake line
Electroid Co.,
Springfield, N.J. |
A new line of economical ac brakes, called Temporiti,
provides an efficient solution to a variety of industrial applications where
three-phase ac voltage is available. The brakes are power-off or fail-safe
brakes designed to hold a load like a parking brake or to stop a load completely
when power is shut off. The brakes mount to the back of an ac motor and are
wired directly to the ac input of the motor. Nine standard sizes are available
with torques ranging from 3 ft.-lbs. to 220 ft.-lbs. Available voltages include
208 V, 230 V, 460 V, and 575 V ac.
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Rugged
notebook computer
Cherry Electrical Products,
Pleasant Prairie, Wis. |
According to the manufacturer, the new A760 notebook
computer withstands an extreme range of temperatures, survives abnormal shock
and vibration tests, withstands high humidity conditions, and is waterproof,
dust proof, and dirt proof. The nonglare LCD screen is available with a
daylight-readable display or with a direct-sunlight-readable display. It
is also available as a touch screen for applications requiring easier input.
Other features include an internal expansion bay that can be customized for
additional I/O ports, two additional PCMCIA ports, GPS and wireless communication
features, added floppy or hard drive, or an extra battery pack for extended
field operations.
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Optical
encoder
Quantum Devices Inc.,
Barneveld, Wis. |
The QD145 high-resolution optical encoder, size
1.45 in., is designed to eliminate the assembly hassle and hidden cost of
installing modular or kit encoders onto OEM products. The QD145 is a complete
operational unit with an integral dual ABEC 5, ball bearing, insert-molded
hollow shaft support that provides the mechanical stability for the 0.87-in.-high
by 1.45-in.-diameter package.
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Air
velocity transducer
Omega Engineering,
Stamford, Conn. |
The FMA-900 air velocity transducer uses both a
velocity sensor and a built-in rugged RTD temperature sensor to accurately
measure the air velocity in standard feet per minute. The temperature sensor
automatically corrects the flow rate for temperature variations. Outputs
are 0-5 V dc or 4-20 mA with a temperature range of -40°C to +121°C.
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Cable
repair kit
Alpha Wire Co.,
Elizabeth, N.J. |
FIT MGKIT1 is a repair kit for cable
applications that includes the FIT Minigun, a heat gun that delivers precise,
controllable heat up to 1,000°F, and a functional variety pack of the
company's FIT-221 general purpose irradiated polyolefin heat shrinkage tubing
in 6-in. cut pieces and in various sizes and colors. The kit contains a 60-piece
assortment of the tubing, including 1/8-, 3/16-, 1/4-, 3/8-, and 1/2-in.
sizes in black, white, red, blue, yellow, and green. The tubing meets a variety
of standards including MIL-I-23053/5B, UL Standard 224, and CSA Standard
198.
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Brushless
dc motor kits
EADMotors, Elinco Div., Dover, N.H. |
 Now
available is a new line of slotless, brushless dc motor kits for motion
applications with uncompromising space restrictions. The rotor and stator
pairs provide a cost-effective solution for system design by eliminating
bearings, housings, and alignment problems. The kits provide cogless, jitter-free
direct drive operation. Sizes range from 1.3-in. diameter to 15-in. diameter.
Speeds range from less than 1Ú4 revolution per hour to over 100,000
rpm with torque constants to over 600 oz.-in. per ampere.
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Heat
transfer coils
ITT Standard,
Buffalo, N.Y. |
This company offers a diversified line of commercial
and industrial heat exchanger coils. Several models feature drawer-type casings
allowing easy removal for maintenance of finned tubes and headers. A unique
spiral fin design provides maximum efficiency, with a choice of fins to suit
requirements of various applications. Tubes are available in a wide range
of materials with outside diameters of 5/8 in. or 1 in. Supply and return
connections can be located to match customer piping requirements.
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Toxic
gas detectors
Enmet Corp.,
Ann Arbor, Mich. |
The TX-2000 Series toxic gas detectors are capable
of continuously monitoring toxic gases or oxygen in hazardous locations.
The instruments are supplied with an electrochemical sensor, have a digital
display, audio/visual alarms, two alarm points, and are approximately the
size of a pager. Other features include pushbutton calibration, battery status
display, and an automatic test when turned on. The detectors use three AAA
batteries. Instruments are available for monitoring Cl2, CO, NO,
NO2, NH3, and O2. Similar models are available
for combustible gases and CO2.
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Power
relay for HVAC
Fujitsu Takamisawa America Inc.,
Sunnyvale, Calif.
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A new 16 A printed-circuit-board power relay for
HVAC applications consumes 35 percent less power than the company's
previous-generation relay. The FTR-JR series has 530 mW nominal power and
9.5 mm insulation distance. It provides a dielectric of 5000 V between open
contacts and will withstand a surge of 10,000 V between coil and contacts.
The series is available in 12-, 18-, and 24-V dc coils and is UL Class B
rated (130°C). The 1 Form A relays feature quick-connect TAB contact
terminals and cadmium-free contacts with a maximum carrying capacity of 20
A and a maximum switching voltage of 250 V ac (150 V dc).
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Shock
absorber
Gunnebo Industrier AB,
Ramnäs, Sweden |
 A
new cushioning shock absorber for anchoring and securing of freight aboard
ships is placed as a link in the lashing chain to eliminate chain jolts,
thus bringing about considerable strain reduction. Peak loads on a 10 mm
chain with a shock absorber mounted have been reduced by 41 percent, according
to the manufacturer. The chain is folded around the shock absorber, which
then prevents the chain from stretching fully in heavy seas.
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Spacer
tape
Gaska Tape Inc.,
Elkhart, Ind. |
The new generation of VK Series spacer tape is designed
to replace more expensive urethane and traditional cork. Heavy- and
medium-density vinyl foam are available in a variety of thicknesses and widths.
The tape is coated on both sides with a solvent-based adhesive. A product
innovation study available from the company gives technical data and details
specific cases of primary and secondary users' applications and solutions
for the fenestration and structural curtain wall industries.
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Rapid-curing epoxy adhesive
Master Bond Inc.,
Hackensack, N.J. |
Sup10HTF is a rapid-curing one-component
high-temperature-resistant and high-strength epoxy adhesive. It requires
no mixing and is formulated to cure at elevated temperatures (5 to 10 min.
at 300°F). The adhesive is said by the manufacturer to provide
high-performance bonds both in shear and peel modes. Tensile shear strengths
in excess of 3,000 psi and T-peel strengths of 20 pli are readily obtained.
Service operating temperature range is 4°K to +400°F, allowing
it to be used in cryogenic applications.
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Isolating
bridge transmitter
Vespo Marketing Associates Inc.,
Thompson Ridge, N.Y.
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The new PI-B programmable isolating bridge transmitter
for strain gauge requirements, manufactured by Intech Instruments Ltd. of
Christchurch, New Zealand, has input-to-output isolation of 1.6 kV and accuracy
of 0.1 percent. Other features include a universal ac/dc power supply, a
high-precision 10 V dc bridge power supply, available standard or special
calibration, bipolar input and output ranges, selectable three-second input
damping, and a compact DIN rail mount enclosure. The transmitter provides
a 10 V dc bridge excitation and enables the user to program the input and
output to interface with measuring, recording, or computing equipment.
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Rotary
torque sensor
Lebow Products Inc.,
Troy, Mich. |
The Model 1806-110-17K torque sensor for use on
dynamometer test stands is designed primarily for engine and transmission
testing. It consists of a one-piece housing design with a foot mount as an
integral part to eliminate the potential of the foot mount loosening under
severe test conditions. The sensor uses an oil drip lubricated bearing design
technique. Sensitivity at rated output is 2 mV/V nominal. Nonlinearity hysteresis
specifications are ±0.05 percent or better at rated output. Repeatability
is 0.02 percent or better of rated output. Speed rating is a maximum of 10,000
rpm.
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PLC
Ethernet accessory
GE Fanuc Automation North America,
Charlottesville, Va. |
The VersaMax SE is a programmable logic controller
accessory, described as versatile and cost-effective, that enables Ethernet
connection via the serial port on the controller. The accessory allows users
to solicit and send information, upload and download programs, and monitor
and control devices over the Ethernet. The VersaMax SE includes screw terminal
blocks that support RS-232 or RS-485 serial interfaces or an RJ45 connector
supporting the RS-232 standard for serial device attachment. Serial speeds
of up to 38.4 Kbps are supported along with DSR and DTR modem controls. Once
connected to the network, the accessory allows users to select from a wide
range of IP protocols.
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Motion
controllers
Galil Motion Control Inc.,
Rocklin, Calif. |
 The
new E-Series motion controllers are designed to eliminate the extensive wiring
required of central or bus-based control systems and the complicated programming
inherent in distributed control systems. With integrating Ethernet technology,
the new controllers can be placed adjacent to motors and I/O signals to reduce
wiring complexity. The DMC-3425 is the first controller in the new series.
It controls two servomotors and provides ECAM, gearing, and both linear and
circular interpolation for coordinated motion along the two local axes. I/O
features include three uncommitted digital inputs and outputs, two uncommitted
analog inputs, I/O expansion to 64 points, forward and reverse limits, and
a home input.
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Signal
conditioning instrument
S. Himmelstein and Co.,
Hoffman Estates, Ill. |
The Model 721 signal conditioning instrument for
measurement and readout of mechanical and fluid power accepts inputs from
a mV/V strain gauge sensor and a frequency output sensor. A third channel
computes and displays the mechanical power. The instrument is said by the
manufacturer to be ideal for determining shaft power, fluid power, and drawbar
power. A two-line alphanumeric backlit LCD can display any two selected channels
or one channel with either limit or I/O status. Data display is a full six
digits with 0.01 percent resolution. Five-character engineering-unit legends
are user programmable for all channels.
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Self-aligning linear bearings
Nook Industries Inc.,
Cleveland, Ohio |
Excel self-aligning bearings are designed with ground
bearing plates that result in greater conformity for higher load capacity
and smooth operation. Steel-reinforced floating seals are available for low-drag
operations. According to the manufacturer, the bearings feature high load
ratings, superior construction, smooth performance, and low cost. The bearings
are available in eight popular inch sizes and seven metric sizes.
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