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The
N-888-HV Series Dispensers were designed and
developed to precisely and reliably dispense
High Viscosity (~12 McP) One Part Urethane Adhesives.
Some models of these Heavy Duty Workhorses have
dispensed as much as 78.5 in3 of
HV Urethane per stroke. Others have dispensed
at flow rates as high as 250 in3/min
and some have satisfied production rates as
high as 90 jobs per hour.
All N-888-HV Series Dispensers are Positive
Displacement Single Acting Lance Piston Meter
Dispensers with Power Flow Valves on the Inlet
and Outlet of the Metering Cylinder. Meter capacities
available range from 9.8 to 78.5 in3
per stroke, with the standard being 49 in3.
The standard N-888-HV unit pictured above with
the optional –ROB and Casters options is
a Heavy Duty Hydraulic powered dispenser with
precise flow control provided by its 2 selectable
key lock Temperature and Pressure Compensated
Flow Controls on its Hydraulic Power Unit. This
system has a maximum flow rate capability of
150 in3/min. It can dispense at pressures
as high as 6000 psi material pressure and only
require 1500 psi hydraulic pressure to do it.
The “–ROB” Option, available
for any of the N-888-HV Series Dispensers, includes
a Volume and Flow Rate Indicator with High and
Low Alarm Set Points as well as Pin Receptacles
for interfacing the dispenser to a Robot or
other Supervisory controller.
The N-888-HV-TF-ROB Series dispenser pictured
above is another version of the N-888-HV Series
dispensers. The “–TF” suffix
stands for Twin Flow dispenser. These systems
have 2 Metering Units with common Inlet and
Outlet plumbing, a common Hydraulic Power Unit
and additional control functionality. They are
used in High Duty Cycle applications where One
metering unit Dispenses while the Other metering
unit Refills. In this manner, the system is
always ready to dispense. There is no need to
wait for Refill to complete before the next
dispense cycle can start. The twin meters also
provide a measure of “back-up” to
the dispensing cell. If one metering unit were
to malfunction, the other can continue cycling.
The N-888-HV-AH-LRM Series dispenser pictured
above represents yet another variation in the
N-888-HV Series. The “-AH” suffix
stands for Analog Hydraulic dispenser. This
feature allows the Robot to set the dispensing
flow rate by sending an analog signal to the
dispenser. The dispenser responds to this signal
and dispenses at a flow rate that is proportional
to this signal with full compensation for variable
loads.
The “-LRM” suffix stands for Lightweight
Robot Mount dispenser. This version of the N-888-HV
Series dispensers is designed to allow the metering
unit to be mounted on the arm of a Robot. By
mounting it close to the dispense tip, dispensing
pressures are lower and changes in the commanded
flow rate by the Robot can be realized at the
tip with less delay. The entire metering unit
assembly for this dispenser weighs 200 lbs.
It is capable of dispensing at up to 4000 psi
and can deliver up to 39.2 in3 of
material per stroke.
The N-888-HV-AE-TF-ROB Series dispenser pictured
above is yet another variation in the N-888-HV
Series of dispensers. The “-AE” suffix
stands for Analog Electric dispenser. These
systems are entirely electric powered and include
Heavy Duty 240 in-lb Continuous Torque DC Servo
motors driving High Duty Cycle 20 ton Ball Screw
Actuators. These systems also allow the Robot
to set the dispensing flow rate by sending an
analog signal that is proportionate to the flow
rate required.
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