Daido internal Gear Pumps G-Series attract a high confidence from clients for their durability, thanks to many success stories in fluid transfer in chemical and various industries.
Gears, which are essential components of gear pumps, with Taocloid tooth profile developed from our own research program, demonstrate a long service life and high efficiency.
G-series pumps are able to meet with individual specifications, due to adaptability to specific requirements.

■FEATURES

Easy maintenance
One point seal construction easily makes all wetted internal components disassembled, inspected and flushed. Maintenance requires no special expertise.

Wider range of applications
Capable to transfer all kinds of fluids and applicable to wider viscosity and temperature ranges.

Outstanding durability
Outstanding durability is assured through carefully selected pump materials, advanced manufacturing techniques and special surface treatment of sliding surfaces.
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Improved NPSH
The combination of special pump design and gear tooth profile produces a high vacuum and outstanding self-priming capability. Daido Internal Gear Pumps are suitable for drawing fluids out of underground tanks, drums and vacuum vessels.

Compliance with special requirements
Capable to meet with difficult transfer and hazardous operational requirements.

■APPLICATIONS

・Medical liquid in the pharmaceutical industry
・High viscosity fluids
Paint（acrylics,distemper,solvent）magnetic paint,varnish,clear varnish,insulating varnish,emulsion,surface-active agent, DOP,bond,rosin,glue,ink,latex,tackifier,bond,grease,synthetic resin,polycarbonate,acrylics,unsaturated polyester,alkyd,phenol,melamine,urethane,polystyrene,AS,ABS,epoxy resin,vinyl acetate,artificial leather,polymer

・High and low temperature fluids
・Petroleum industry
LPG, liquefaction froon, coal tar, pitch, hot melt, SK oil, durathame, turbine oil, oil, heat oil, thinner, gasoline, naphtha, alcohol, anthracene oil, A heavy oil, B heavy oil, C heavy oil, light oil, kerosene, non freezing liquid, asphalt, wax, benzene, lubricating oil, fatty acid, ester, solvent

・Food industry
edible oil, soy bean oil, rape oil, corn oil, rice starch oil, refinement edible oil, lard, head, butter, margarine, chocolate, starch syrup, sausage, curry, jam, sugared water, carbohydrate solution, ice cream, candy, vitamin oil, fish mill, pet food, animal plant oil

■CONSTRUCTION AND THEORY OF FUNCTION

The gear assembly consists of a gear and a pinion. The gear is mounted on and driven by the shaft, and the pinion fitted with pinion bush and supported on the pinion pin is driven by the gear.
The center of the pinion is eccentric to the center of the gear. A crescent on the casing cover occupies the space between the external circle of the pinion and the internal circle of the gear.
The gear, mounted on the shaft, rotates and drives the pinion. The pinion rotates inside of the crescent and the gear rotates outside of the crescent. The rotation transfers the fluid flooded between the gear and pinion teeth to discharge port.

#1	At this point, gear and pinion teeth are in perfect mesh, which acts as a seal between the suction and discharge ports.
#2	As the gear and pinion teeth begin to discharge, fluid is drawn into and floods the space between the gear and pinion teeth.
#3	Fluid flooded between the gear and pinion teeth is displaced to discharge port by rotation.
#4	As the gear and pinion teeth begin to mesh again, fluid is pressurized and forced out the discharge port.

SHAFT SEALS

■MAIN MATERIALS OF MAIN COMPONENTS

NAME	MATERIAL
Casing,Casing cover	Meehanite metal,FCD450,SCS13,SCS14,SCS16,SCS23
Gear,Pinion	Meehanite metal,FCD450,SCS13,SCS14,SCS23,S45C, SACM645,SUS630,SUS316L,BC3
Pinion bush	LBC,carbon,ceramic,PTFE,FC200,SiC,SACM645
Shaft	SCM435、SUS304、SUS316、SUS630、SUS316L


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