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External gear units are classic hydraulic units and come in the form of pumps and motors. Individual pumps, multiple pumps and lownoise SILENCE versions in seven different series open up a virtually unlimited range of possible uses.
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Type T Pump
With the series type T we offer a program with several variants and constructions for the transport of almost all pumpable media.
It can be used up to maximum rotational speeds of 1500 rpm at pressures up to 16 bar. The rotational speed is basically determined by the viscosity or lubricity of the pumped medium.
At viscosities in excess of 10000 mm²/s the medium to be pumped should flow to the pump. In case of suction heights of more than 7 m LC and admission pressures in excess of 2 bar please contact our engineering department as larger piping cross sections will be required!
The pumps are driven by electric motors, backgeared motors, belt drives adjustable gear motors, or similar.
All pumps can operate with clockwise or counter-clockwise sense of rotation.
- pulsation-free pumping delivery
- independent of sense of rotation
- sturdy construction
- easy mounting
- wide selection of materials
- several sealing variants
- for packings with suction bore
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PFG are fixed displacement external gear pumps, axial hydraulic balancing, simple and sturdy construction, lo noise level. Suitable for hydraulic oils or synthetic fluids having similar lubricating characteristics
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External gear pumps from Micropump provide a continuous, pulseless flow. The rigid design of the gears and housing allows for high pressures and the ability to pump a wide range of fluids. Manufactured in an assortment of chemically resistant material options, these compact, magnetically driven gear pumps provide accurate fluid delivery in a durable, leak-free design.
Whether you use the cavity style or the revolutionary suction shoe design, Micropump gear pumps are engineered to deliver peak performance in any application and can meet the following specifications:
- Displacement range 0.017 to 24.5 ml/rev
- Flow rates to 42 L/min
- Differential pressures to 8.7 bar
- System pressures to 106 bar
- Max. viscosity 5000 cps
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External gear pumps, series AP...
The essential components of series AP external gear pumps are an aluminium alloy body and two gearwheels supported by plain bearings.
The front flange can be the SAE standard, or the British or German OEM patterns.
The various frame sizes can be combined with each other, enabling double and triple pumps to be assembled.
Advantages
High overall efficiency thanks to optimised hydraulic compensation
Design and materials that guarantee excellent technical specifications and long life service
Optimum quality/price ratio
Customised models can be built for specific applications
Low maintenance requirements, even in heavy-duty operating conditions
Various components and accessories are available for radial/axial loads, pressure/flow control, etc.
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Gear Flange-Pumps
- in cast iron GG 25 or stainless steel
- With circulation valve only in cast iron available
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The GHC Series of iron, steel and stainless steel pumps is designed for continuous duty service for applications in the operating ranges shown. These units are available with head jackets for temperature control, carbon graphite bushings for low-viscosity liquids, silicon carbide bushings for wear resistance, and numerous seal options. The GHC Series units may be foot-mounted or, by using a motor adapter, direct connected to NEMA "C" flange motors. This heavy-duty series provides superior rotor shaft support and an integral, maintenance-free radial/thrust bearing for reduced deflection and wear.
Specifications
Size: 1" (25 mm), 1-1/2" (37.5 mm), 2" (50 mm), 2-1/2" (62.5 mm), 3" (75 mm)
Max Capacity: 107 GPM (7 lps)
Max Viscosity: 250,000 SSU (54,000 cST)
Max Pressure: 300 PSI (21 BAR)
Min Temperature: -60 F (-51 C)
Max Temperature: 350 F (177 C)
Materials of Construction: Cast Iron, Cast Steel, Stainless Steel
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REF. B34T125
DESCRIPTION Gear Pump 125cc/rot, Rear Input/Output, 4 Bolts (ISO), aplication pressure-up to 180bar, peak pressure-220bar
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Diener Precision Pumps manufacture the highest quality and most accurate precision external magnetic drive gear pumps in the world. With flow ranges from 5 ml/min to 10 L/min our pumps are designed to give optimum performance over a wide range of applications.
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Pulsefree pumping with gear pumps up to 12 liter/min and differential pressures up to 5.6 bar.
REGLO compact gear pump, footprint only 10 by 18 cm
MCP programmable gear pump, IP65
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D Series Gear Pumps
D-series gear pumps are precision metering pumps, particularly small and compact, that have been projected for the metering and dosing of great variety of fluids for chemical and plastic industries. On these gear pumps, shafts receive extra resistance to wear via a Titanium Nitride coating.
Materials
Housing: Cast iron G25
Rotors: Steel 39NiCrMo3+TiN coating
Bearings & Wear Plate: Nitrided Cast iron G25
Sealing Elements: Various
Application
Viscosity: from 1CST to 1'000'000CTS
Pressure: from 0BAR to 70BAR
Size: from 1.5cc/rev to 18cc/rev
Temperature: from -10°C to +240°C
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The GMS Series is designed for intermittent or medium duty service for applications in the operating ranges noted. These units are available with head and backhead jackets for temperature control, carbon graphite bushings for low viscosity liquids, silicon carbide bushings for wear resistance. For continuous duty service, or for handling viscous liquids, see heavy duty GHC pumps.
Specifications
Size: 1" (25 mm), 1-1/2" (37.5 mm), 2" (50 mm), 2-1/2" (62.5 mm), 3" (75 mm), 4" (100 mm), 5" (125 mm), 6" (150 mm)
Max Capacity: 600 GPM (38 lps)
Max Viscosity: 250,000 SSU (54,000 cST)
Max Pressure: 150 PSI (11 BAR)
Min Temperature: -60 F (-51 C)
Max Temperature: 450 F (232 C)
Materials of Construction: Cast Iron
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Series 9000C-O
This planetary oil-bath gear drive pump achieves up to 110-117 gpm (416-443 lpm) and 80 psi (5.5 bar). The series includes models 9000C-O, 9006C-O, 9008C-O, 9016C-O, 9018C-O, and 9028C-O.
Series 9000C-O-SP
This self-priming gear driven pump achieves up to 115-119 gpm (435-450 lpm) and 77 psi (5.3 bar). The series includes models 9006C-O-SP and 90016C-O-SP.
Series 9000P-O
This planetary oil bath gear driven pump achieves up to 94-99 gpm (356-375 lpm) and 80 psi (5.5 bar). The series includes models 9006P-O, 9008P-O, 9016P-O and 9018P-O.
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Extraction Pumps: These pumps feature a large suction opening to promote filling of gear teeth when suction pressure is at full vacuum. The jacketed housing is stainless steel; gears/ shafts are one piece construction, made from nitrided alloy steel; bearings are of alloy tool steel.
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Liquiflo gear pumps are manufactured from high-alloy materials such as 316 Stainless Steel, Alloy-C and Titanium and a variety of corrosion-resistant and wear-resistant internal materials. Liquiflo gear pumps can be configured with packing, single or double mechanical seals or magnetic-drive. These options allow Liquiflo gear pumps to be specially engineered to handle many difficult chemicals - such as polymers, solvents, acids, caustics or other corrosive liquids - over a wide range of viscosity, pressure and temperature. Liquiflo gear pumps are typically used for metering, circulation, transfer and injection applications.
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GSX Series Stainless Steel, Double Helical, Rotary Gear Pumps
- Double Helical Herringbone Gears provide quiet, pulse-free flow with better load carrying ability, greater strength and minimum hydraulic shock.
- High Speed Pump Capability eliminates the need for expensive speed reduction accessories and allows the use of off-the-shelf motors.
- Between Bearing Design virtually eliminates shaft deflection, even while accommodating heavy, highly viscous loads.
- Standard Babbitted Carbon Sleeve Bearings are self-lubricated for handling low viscosity fluids. Bronze bearings are available for dirty fluid applications.
- Inherently Hydraulically Balanced Design eliminates end thrust and the need for thrust bearings.
- Convertible Stuffing Box allows ample packing or mechanical seals to be used for greater flexibiltiy.
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Chemical gear pumps GX series
Both high viscosity and low viscosity liquids can be handled
When a low-viscosity liquid is handled by a conventional gear pump, "jamming" and "seizing" tend to occur. SiC ceramic gears do not have this problem even when the pump functions at a high speed. Silicon nitride ceramic gears show stable performance in handling high viscous liquids, due to their strength and toughness.
Ability to handle fine slurries
Now that gears and other sliding components including bearings are made of ceramic, the handling of fine slurries hard and soft will not impair the longevity of these pumps. Performance has been noticeably improved. Ceramic gears make it possible to reduce spaces between parts, therefore out performing conventional metal gear models.
Quiet liquid transfer with less pulsation
Without the pulsation that is common to reciprocating pump and general use type gear pumps, liquid is transferred quietly and smoothly no agitating or foaming.
High self-priming ability
Because the suction port is at the top of the pump, the pump chamber remains full when pump stops working. Self-priming is enhanced at re-start.
Constant flow injection
Regardless of the temperature change, viscous liquid can be handled at accurate flow rate, which can not do with other pumps. As the output is linearly related to rpm, the flow rate is easily controlled by changing speed.
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G Series Gear Pumps
G-series is designed for metering, booster, vacuum extraction, lubrication and transfer of a great variety of fluids in any industrial application. Continually updated, more than forty years of experience and development are invested in this series, making it the meeting point for quality and practicality.
Materials
Housing: Cast Iron G25
Rotors: Steel 39NiCrMo3
Bearings: PTFE on Stainless Steel
Sealing Elements: Various
Application
Viscosity: from 1CST to 1'000'000CST
Pressure: from 0BAR to 30BAR
Size: from 1.5cc/rev to 300cc/rev
Temperature: from -10°C to +240°C
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Liquiflo H-Series Gear Pumps are manufactured from 316 Stainless Steel or Alloy-C, and are available in both Sealed and Mag-drive configurations. These pumps are available in a wide variety of internal materials to pump a broad range of chemicals, such as polymers, solvents, acids, caustics and other corrosive liquids.
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Liquiflo Max-Series Gear Pumps are manufactured from 316 Stainless Steel or Titanium, and are available in both Sealed and Mag-drive configurations. These pumps feature Helical gears and relieved wear plates for smoother and quieter operation and intrinsic reduction of gear separation forces. Their unique and durable design will assure extended life in high-pressure pumping applications.
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High Pressure Internal Gear Pumps QX
The QX pumps are the 5th generation of Bucher internal gear pumps, which have proven themselves in thirty years of service around the world. The straightforward and rugged construction guarantees long service life without the need for extensive maintenance. Tandem and multiple pumps are available worldwide in more than 1000 variants.
Advantages
- High pressures
- Low noise level
- Long service life
- Negligible flow and pressure pulsations
- Insensitive to contamination of the fluid
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DPP offers an assortment of quality gear pumps used in a wide range of applications, from critical medical devices to ink jet printing; from laboratory analysis equipment to water purification systems; all superbly manufactured to the highest possible standards. Tests show that the consistency of our product performance is second to none, which makes DPP the first choice for very low pulse-less flow or low noise application requirements.
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The BR series offers self-priming pumps, called rotary lobes pumps, used for liquids and semi-solids filling, decanting, irrigation or emptying operations. Differently from all other pumps, the liquid pass through the pump. The BR series is composed of 7 models (BR 40, BR 80, BR 120, BR 160, BR 200, BR 240 and BR 280) available in versions /P, /D, /H with capacities from 1425 lt/min. to 4950 lt/min.
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The volumetric lobe pumps offer to a effective increment nell´efficienza of the transfer of the liquids with lowland, average and high speed.
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The PK pump is designed as a modular construction. It consists of a synchronous gear-head driving the two rotary lobes contained in a pump body having suction and pressure ports and connections. The robust bearings are located in the gear-head where they are protected from the pumped media by a mechanical sealing.Conversely, special seals contain the lubricating oil within the gear-head.
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Standard Features:
- Compact Footprint (17" x 33" of floorspace)
- M-code selectable high and low pressure
- Dual Filter version minimizes service downtime
- Pump Water Based Coolants or Cutting Oils
- Adjustable Discharge Pressure to 1000 psi (70 Bar)
- High Capacity Bag Filter, 10-mic Std.
- Integrated Pressure Switch for automatic filter monitoring
- Inlet/Outlet Gauges to monitor Filter Condition
- Uses Low-Cost Bags
- Coolant and thermal alarms
- 208 - 230VAC Standard, 440 - 480VAC Available
- 12 foot modular cables
- 20 foot high pressure hose
Optional Features:
- Abrasive duty construction for grinders
- Machine prep kit for quick change portability
- Integrated coolant transfer pump
- OEM Interface Kits
- NF Non-filtered units
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Tuthill lubrication and circulation pumps handle many viscosities and sustain a constant flow at any pressure. With only two moving parts the internal gear design allows the pump to handle more viscosities than it's competitors.
Simple, Compact Design offers high efficiency and longer life.
Positive Reversing Action - The unique reversing feature allows the lubrication and circulation pumps the ability to reverse flow without the use of valves.
L Series
- Internal gear pump design
- Compact and flexible drive options
- Available with positive reversing feature
- Flow rates to 13.7 usgmp (3m3/hr)
- Pressures to 500 psi (34.5 bar)
- Standard with single mechanical seal
- Cast Iron Construction
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Tuthill lubrication and circulation pumps handle many viscosities and sustain a constant flow at any pressure. With only two moving parts the internal gear design allows the pump to handle more viscosities than it's competitors.
Simple, Compact Design offers high efficiency and longer life.
Positive Reversing Action - The unique reversing feature allows the lubrication and circulation pumps the ability to reverse flow without the use of valves.
1000 Series
- Internal gear pump design
- Flow rates to 13.7 usgpm (3M3/hr)
- Pressures to 300 psi (20.7 bar)
- Multiple porting options with side ports as standard
- Cast iron construction
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Stainless steel gear dosing pump with magnetic coupling
Metering pump for the food industry with flushing connections and passages for CIP cleaning
HP radial piston pump (closed design)
HP radial piston pump submersible (open design)
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Diener Precision Pumps manufacture the highest quality and most accurate precision external magnetic drive gear pumps in the world. With flow ranges from 5 ml/min to 10 L/min our pumps are designed to give optimum performance over a wide range of applications.
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