N-888-CM Series Dispensers

The N-888-CM Series Dispensers comprise a very extensive line of 2 component, fixed ratio, Positive Displacement, Constant Flow Rate, Lance type Piston Metering dispensers. These dispensers were originally developed to meter, mix and dispense 2 part, 78:1 and 22:1 ratio by volume, Water Catalyzed Urethane adhesives in Automotive Glass Bonding applications.

Today, numerous versions of the N-888-CM Series dispensers are available to dispense virtually any 2 component material, at ratios from 10:1 to 80:1, with viscosities up to 3 McP and at pressures up to 3000 psi. Whether the need is to dispense small, accurate and repeatable shots at very fast repetition rates or long, large cross-section, consistent and uniform beads of mixed material, there is an N-888-CM Series Dispenser available to do the job.

All of the N-888-CM Series dispensers include the famous Jesco Roto-Stat Air Powered High Shear Dynamic Mixer. Available in 3 different sizes, this single port mixer is capable of producing uniform and consistent mixtures, even on the widest ratios and most difficult to mix 2 component chemistries.

All N-888-CM Series dispensers (except for the –PAL portable air logic units) are constant flow rate machines. This is accomplished with the Pressure and Temperature compensated Hydraulic Drive Package that powers the metering cylinders. This feature provides consistent and repeatable flow rate control of the material dispensed, irregardless of Time, Temperature, Pressure or Batch material characteristics that can vary.

Whether relay logic or PLC controlled, all N-888-CM Series dispensers include a control panel built to automotive electrical (JIC) standards. Standard controls include the following functionality at a minimum;

• A mixer speed indicator with high and low limit speed controls.
• Automatic mixed material purge controls with adjustable purge duration, purge delay and purge interval timers.
• One part, straight resin purge capability.
• Manual controls and indicator lights for operating the equipment and diagnosing major faults.
  

Other features available are the “-TS” Timed Shot control option that works together with the Heavy Duty P & T Compensated Hydraulic Drive package to provide accurate and repeatable shots. The “-ROB” option provides an interface to a Robot or other Supervisory controller and also includes a Volume and Flow Rate Indicator with High and Low Limits that facilitate monitoring and verifying process parameter requirements.

The N-888-CM Series dispensers are available in several different versions, each one uniquely capable of fulfilling the requirements of numerous applications.

The N-888-CM unit pictured above can dispense up to 39.8 in³ of 78:1 ratio mixed material per stroke and can be used in manual or automated dispensing cells. With a “-TS” option, this machine has been used to dispense repeatable and rapid fired shots.

The N-888-CM-TF unit pictured above is a Twin Flow system capable of delivering a nearly continuous flow of 78:1 ratio mixed material. Its dual 39.8 in³ capacity metering units alternately dispense from one side while the other side is refilling. This “–TF” unit with its Robot interface and Volume and Flow Rate Indicator package is intended for automated dispensing cells where production rates meet or exceed 90 Jobs per Hour. With its High Shear Dynamic mixer, mixed material delivery rates of 90 in³ per minute or more is not a problem. This unit also includes a Diagnostic Indicator Panel as part of the controls package. This feature provides skilled trades a graphic indication of the machine status that can be observed at a glance. It also pin-points fault occurrences, if and when they occur, to the system area / device level.

Need a machine with very small shot or low flow rate capability? No problem! The N-888-CM-LV-ROB dispenser with its 12.6 in³ capacity per stroke and small P & T compensated flow controls has Robotically applied consistent 3 mm diameter or smaller beads of 78:1 ratio mixed material.

Have a part requiring a long and large cross-sectional area bead of hard to mix 2 part material? Is 39.8 in³ per stroke not enough capacity? How about the 79.5 in³ per stroke N-888-CM-VAN unit! Not only does it have a large capacity, but the entire metering unit is trolley mountable so that it can follow the job while dispensing mixed material.

There are many other versions of the N-888-CM Series dispensers available, too many to mention all of them here. So if you have a viscous, wide ratio, difficult to mix, 2 component material that needs to be dispensed accurately and repeatably, ask about the Jesco N-888-CM Series Dispensers.