From the Cover
Desktop Nanopositioning Piezo Drive
Aerotech (Pittsburgh, PA) has introduced the Ensemble
QDe, a desktop nanopositioning piezo drive designed for
use with the Ensemble family of drives and controllers. The
QDe connects to any Ensemble controller network enabling
coordinated motion between piezo stages and servo axes.
; Linearity 0.01% over the full travel range in closed-loop
; PID servo loops with advanced feedforward.
; Multiple integrators coupled with 8 programmable filters.
; Aerotech Dynamic Controls Toolbox and Motion Designer.
E Drive Actuators (West Hartford, CT) has announced the
availability of the ELIMINATOR ST series of high speed, high
thrust, stainless steel linear actuators. Features include:
; Rounded or peaked drive covers,
round front, or rear caps.
Physik Instrumente (Auburn, MA) has released a member of
the PIMag family of precision positioning stages with magnetic
direct drives. The compact ultra-precise V-551 motorized linear
translation stage comes equipped with an integrated absolute-measuring, 2 nm resolution encoder. Features include:
; A velocity to 500 mm/s.
; Ironless magnetic linear motors.
; Precision crossed roller bearings with anti-creep cage assist.
; A guiding accuracy of 1 µm
straightness/flatness per 100 mm.
Microvolume Diaphragm Valve
VICI (Houston, TX) has announced its Microvolume Diaphragm
Valve, designed for applications requiring minimal maintenance
and maximum lifetime. Three configurations are available: a
4 port internal loop sample injector; a 6 port external loop
sampling/switching valve; and a 10 port multifunctional
diaphragm valve. Features include:
; A lifetime >1,000,000 cycles at ambient temperature/300 psi.
; A lifetime of 500,000 cycles at 175°C/300 psi.
; Actuator air (40-50 psi) that is supplied to a side port with
10 to 32 female threads.
Screw Conveyor Drive
NORD Gear Corporation (Waunakee, WI) has
announced the NORD Screw Conveyor Package.
Closely stepped speed reduction ratios combined
with a directly coupled gearmotor or NEMA C-face
input design eliminates the need for top motor mounts,
pulleys, belts or guards. The Screw Conveyor Package
design is available for both CLINCHER Parallel Shaft
gear units and Helical-Bevel Right Angle gear units.
; A UNICASE reducer housing.
; Quadrilip reducer shaft sealing.
; Optional high capacity output bearings.
; CEMA standard flange mounting.
; CEMA drive shafts ranging from 1-1/2 to 3-7/16”.