Yildiz YMB Internal Eccentric Gear Pump

Fuel Transfer Pump & Resin Pump

Key Specifications
Max Flow Rate 533lpm
Max Head 100M
Max Temperature 70°C
Max Viscosity 55,000 cP
Solids 0mm
Sizes 1" to 3"
Datasheet
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The Internal Eccentric Gear Pump range is designed for pumping low to high viscosity fluids with lubricating properties. These internal gear pumps are available both with and without an external bypass relief valve, and there is also the option for an external heating jacket to maintain the temperature of the pumped medium. Due to the tight clearance between the gears, these internal gear pumps are not designed for fluids containing abrasive particles. The most common applications include fuel oil transfer, diesel fuel transfer, coolant transfer, OEM, hot oil circulation, food industry, marine, detergent industry and lubrication.

Available here is our guide to the workings and design of internal gear pumps and where they are most suited.

  • Internal eccentric gear pump
  • Designed for low pressure applications
  • Compact design
  • Reliable construction thanks to only two moving parts
  • Various material options
  • Available with external bypass, jacketed cover and blind covered
  • 230v, three phase 50/60hz motors available
  • Manufactured according to CE regulations
  • Available with external bypass, jacket cover and blind cover
  • Explosion proof ATEX rated motors and non-sparking flexible couplings are available

Key Benefits:

      

CAST
IRON		STEEL
CAST		STAINLESS AISI
304/316 CAST		SPHEROIDAL
CAST IRON		SNBZ 12
BRONZE		CARBON
GRAPHITE		SLICON
CARBIDE		HARD METAL
COATED STEEL		LIP
SEAL
PUMP BODY & COVERSXXX
GEARS X X XX
BEARINGS XXX X
SEALING
X

FAQs

Gear pumps operate by an unchanging volume of fluid passing between the teeth of two meshing gears and their casing at a constant rate (not between the gears themselves). As the gears rotate and the meshed teeth separate, a partial vacuum is formed that fills with fluid, which they trap and move it around the casing from the suction to the discharge point.

The pumping of high viscosity lubricating fluids such as oils, fuels, paints, soaps and resins. The pumping of low viscosity fluids should be avoided as they can cause fluid to leak backwards or "slip" back to the suction side.

An internal gear pump operates a "gear within a gear" principle, whereby one gear (the idler) is positioned inside another gear (the rotor).

Whilst external gear pumps offer higher pressure and flow rates, internal gear pumps generally have better suction capabilities and are able to handle higher temperature, higher viscosity fluids. Internal gear pumps slower speeds and larger clearances also makes them more suitable for shear sensitive fluids

Yes. Gear pumps have excellent self-priming capabilities thanks to their rotating gears evacuating any air in the suction line, and forcing the liquid into the pump inlet.

The close tolerances between the gears and casing mean that pumping solids will result in wear and damage. Some internal gear pump designs which have less tight tolerances and slower speeds however may be able to tolerate small solids.

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