Customizable Magnetic Drive Gear Pump with 0.4-3000CPS Viscosity Range

So you're looking at a pump that needs to handle a pretty wide range of viscosities, from almost water-thin at 0.4 CPS up to a thick 3000 CPS. That MRC12/37 model we carry will absolutely do that, and the flow range is 0.001 to 48.5 L/min depending on the motor you pair it with. We've seen these used in everything form dosing inks to transferring lubricants, and the pressure differential tops out at 25.5 bar. It's got a magnetic drive, which basically means zero leakage—no shaft seals to wear out—and the service life is rated over 20,000 hours, which is pretty solid for a gear pump this size.

The gear material is reinforced PEEK and the shaft is nano-ceramic, which gives it a lot better wear resistance than standard stainless steel setups, especially if you're running abrasive fluids. It's temperatures from -20°C up to 180°C, so it can handle hot oil or cold solvents without much issue. You can get the pump body in SS304 or SS316L—most buyers go with the 316L for anything corrosive. The connection threads are NPT or G from 1/8" up to 3/4", and we stock both.

If you're using a servo or stepper motor, the flow accuracy is ±0.5%, which is tighter than most standard gear pumps in this class. The inlet pressrue can go as low as -0.9 bar, so it's got decent suction lift capability—that's important if you're pulling from a tank below the pump. Maximum gravity is 1.8, so it's not suited for extremely heavy slurries or high-density pastes; you'd need a different pump type for that. We usually have MRC12/37 in stock, but check lead time if you need the explosion-proof motor option.

For motor choices, you've got AC, BLDC, servo, inverter, and explosion-proof. Most industrial buyers go with the BLDC for variable speed control, but if you need precise dosing, the servo is the way to go—it gives you that ±0.5% accuracy we talked about. The internal engaged mesh and straight involute tooth profile mean it runs quietly and has minimal pulsation, which is a big plus for sensitive applicaions like coating or inkjet printing. One detail a lot of people don't think to ask: the nano-ceramic shaft is actually harder than steel, so it handles dry starts better than you'd expect, though we still recommend priming it.

It's got CE and ISO9001 cerification, and also NK for marine applications if that matters. The temperature rating is -20°C to 180°C, and the ambient can go a bit higher if you're using the right motor. We've shipped these to labs doing catalyst research and to factories dosing epoxy—it's pretty. If you send over your flow and viscosity requirements, we can confirm the exact motor and body material combo. The 3/4" NPT connection handles the higher flow rates well, but for 0.001 L/min you'll want the 1/8" fitting.

Anyway, the typical lead time is about 20 days or so for the standard SS304 version, but the 316L might add a week. The MOQ is usually one unit, but our company can do custom shaft seals or port configurations if you need—just let us know. I'd recommend the servo motor if you're after that ±0.5% accuracy; otherwise, the BLDC is a solid workhorse for most application.