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ROTOKAM™ technology is based on a variable speed electric motor and gear reducer connected to and rotating a drive shaft. A single fixed cam (for 1:1 by ratio material), multiple fixed cams or our unique Variable Arc Cams¹ (for ratio adjustment) attached to the drive shaft operate positive displacement piston pumps. With the accompanying dynamic mixer (either plastic disposable or aluminum), ROTOKAM™ machines are suitable for pouring or injecting a wide range of filled or unfilled urethane elastomer or foam into various types of rigid or flexible molds. Flow rates can be adjusted while dispensing without going off ratio accommodating intricate mold filling requirements.

Several models are available that cover a wide range of flow rates up to 60 lbs. per minute and shot sizes of less than 1 gram. Ratio accuracy is +/-1% .

¹Patent Pending
² Other diameter pumps can be provided for ratios that vary below the 3:1 listed. All ratios between 1:1 and 20:1 can be accommodated using different diameter pumps and cams.

Specifications:

*Single or 3 phase, variable speed pump drive motor with gear reducer.
Fixed or variable arc cams to control pump piston stroke.

*Single or double acting pumps for precision shot metering or continuous flow.
Positive opening and closing, spring loaded piston check valves for pump inlets and outlets prevent off ratio condition at beginning and end of stroke cycles.

*Heated check valve housings prevent sticking.

*Injection dispense pressures up to 3,000 psi for closed mold applications. Pouring into an open mold results in very little pressure. Only that which is caused by the mix chamber and any hose attached to the end of the mixer.

*Mix ratios from 1:1 to 20:1 (with optional diameter pumps and cams).

*The mix head is mounted on the machine frame and oriented to facilitate the process requirement, such as but not limited to, vertically or horizontally.

*4000 RPM electric mixer motor.

*Disposable plastic cartridge dynamic mixer (unique blade & baffle design) up to 40 lb./min. depending on viscosity. Higher outputs/viscosities require an aluminum blade & baffle mixer.

*Injector/check valves and orifices at mix head manifold prevent lead/lag.

*Manual valves to control feed or recycle of product from pumps to mix head.

*Stainless steel braided, Teflon lined hose set from pumps to mix head.

*Flexible plastic tubing can be attached to the mix head and thus to the dispense location. Either a foot switch or a hose mounted pistol grip with switch and can be supplied to control the dispense start/stop. Otherwise, the dispense is controlled from the control panel.

*A NEMA 12 control panel mounted on the machine frame houses all required switches, controllers and indicator lights.

*Electrical requirements: 120VAC, 60 Hz, 10 to 20 amps or 230VAC, 3 phase, 60 Hz depending on pump motor HP and heating requirements.

Options:

*Various size cams to facilitate various ratios.

*Multiple heat zones to accommodate process of hot cast urethanes including MbOCA.

*Various saddle or day tanks from 1 gallon to 80 gallon with or without heating.

*Vacuum capable material tanks with magnetically coupled agitators.

*Electric or air powered tank mixers.

*Automatic tank refill kits.

*Jacketed tanks for chilled water cooling.

*Chillers.

*Drum feed kit from supply drums to metering pumps (with or without heat).

*Shot size controllers.

*Solvent/air purge kit.

*Static mixers for epoxy or silicone applications.

*Portable mounting stand on caster wheels.

*Air regulator, gauge and filter assembly (required for purge kit).

*Automatic valves to control feed or recycle of product from pumps to mix head.

*Jacketed mixer shroud to provide cooling of mixer for extended dispense cycles.

*Adjustable mixer motor speed controller.

*Custom engineered features to facilitate your specific process.