| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 6 Months |
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A gear pump is a type of positive displacement (PD) pump. It moves a fluid by repeatedly enclosing a fixed volume using interlocking cogs or gears, transferring it mechanically using a cyclic pumping action. It delivers a smooth pulse-free flow proportional to the rotational speed of its gears.
Gear pumps use the actions of rotating cogs or gears to transfer fluids. The rotating element develops a liquid seal with the pump casing and creates suction at the pump inlet. Fluid, drawn into the pump, is enclosed within the cavities of its rotating gears and transferred to the discharge. There are two basic designs of gear pump: external and internal gear pump.
Gear pumps are compact and simple with a limited number of moving parts. They are unable to match the pressure generated by reciprocating pumps or the flow rates of centrifugal pumps but offer higher pressures and throughputs than vane or lobe pumps. Gear pumps are particularly suited for pumping oils and other high viscosity fluids.
Of the two designs, external gear pumps are capable of sustaining higher pressures (up to 3000 psi) and flow rates because of the more rigid shaft support and closer tolerances. Internal gear pumps have better suction capabilities and are suited to high viscosity fluids, although they have a useful operating range from 1cP to over 1,000,000cP. Since output is directly proportional to rotational speed, gear pumps are commonly used for metering and blending operations. Gear pumps can be engineered to handle aggressive liquids. While they are commonly made from cast iron or stainless steel, new alloys and composites allow the pumps to handle corrosive liquids such as sulphuric acid, sodium hypochlorite, ferric chloride and sodium hydroxide.
External gear pumps can also be used in hydraulic power applications, typically in vehicles, lifting machinery and mobile plant equipment. Driving a gear pump in reverse, using oil pumped from elsewhere in a system (normally by a tandem pump in the engine), creates a hydraulic motor. This is particularly useful to provide power in areas where electrical equipment is bulky, costly or inconvenient. Tractors, for example, rely on engine-driven external gear pumps to power their services.
External gear pumps, the most popular pumps used in modern hydraulics systems. These hydraulic gear pumps and motors can work under heavy duty operating conditions and transmit high hydraulic power, feature good hydraulic, mechanical and volumetric efficiency, low noise level and, last but not least, compact dimensions and low weight to power ratio. Ideal for both industrial and mobile industry sectors.
The basic components consist of a gear set supported by two aluminum bushings, a body, a securing flange and a cover. The shaft of the driving gear projecting beyond the flange mounts a seal ring coupled with a metallic ring to strengthen the setup. Both rings are held in place by an elastic securing ring.
The body is made of a special aluminium alloy with high strength for minimized deformation even when subject to high pressure. There are also cast iron bodied pumps and motors now available for applications requiring high pressures, optimal performance and endurance. Flange and cover are made out of cast iron or aluminium alloy, depending on the model series type, manufactured through a process of continuous flow casting and with a final surface treatment of phosphating.
Gears are made of special grade steel. Their manufacturing process includes case-hardening and quench hardening. The gears are ground and fine finished to achieve a high degree of surface finishing. Good tooth profile design and geometric proportions ensure low pulsation levels and low noise levels during motor operation.
Bushings are made of special low-friction and high-resistant aluminium alloy and manufactured from die-casting that have excellent high strength and anti-friction characteristics. Also equipped with anti-friction DU bearings with tight tolerance.
Special and symmetric compensation zones onto bushings, insulated by special preformed seals with special anti-extrusion ring, allow full free axial and radial movement to the bushings, which is proportional to motor operating pressure. In this way, internal leakage is dramatically reduced, ensuring very good pump performance (both in terms of mechanical and total efficiencies) and proper lubrication of pump moving parts.
Why buy Wanxun hydraulic gear pump?
Shaft sleeves are imported from DAIDO Japan.
Oil sealing is made by NOK Japan.
Hydraulic pump Case is an extrusion molding which is produced by extruding machine (press power is 7200 Ton).
Pls check pic as below:
Smooth surface, hard density of material.
Complete variety for international pump parts (more than 300 kinds of Hydraulic pumps)
Note before quotation:
For fast and accurate quotation information, we need more details:
Your specs model of construction Vehicle
The hydraulic pump part number (most important)
The photos of pump
The direction of rotation for the pump (anticlockwise or clockwise)
Installation and operation manual of the gear pump:
The Hydraulic Oil must be clean and fresh, the bad condition of Oil will damage and reduce working life of pump. Please add in HYD Oil in the pump before installation. It will affect working efficiency of pumps when the old pump and new pump connect.
In developed industry market, the spare parts of gear pump achieved sophisticated. Therefore, check of clean oil with operation before using pump. The installation should be according to the ex-works technical documents of gear pump, and related specification of this manual, also the pump structure should be taken into consideration.
1. Oil liquid cleanliness standard requirements up to NSA10 level---NSA11 Level (The average value of contamination performance indicators less CB/T14039-2002rule 19/16).In others words, when using new products, oil storage tank must be cleaned completely or oil filter vehicle should carried out clean the oil, and update filter. (New products and badly worn pump can also cause technical damaged problem),once iron pin entry into new-pump with oil. The customer must ensure clean oil-channel and take oil tank, update filter.)
2. Program of pump drive shaft and machine output shaft is Max.0.05mm.The inside of spline bushing worn parts has been replaced at the proper time, or coaxial degree might have influence. Measurement the pump of brack installation and connection structure verticality is less 0.05mm. Machine drive and pump drive shaft concentricity is within 0.05mm.
3. When replace new pump, it requires filling up with hydraulic oil from inlet position and turning a half circle to pump rotation. After installing, keep running 20 mins with low speed, check the connecting head and seal ring to make sure there is not leak oil or leak out of this pipe. The machine will not run and burn shaft, if pressure is insufficient. In addition, check safety valves to make sure pump works smoothly. Gear pump overload (allowed 1.15 times under rated of pressure instantaneous overload about 1min) is allowed less than one minute. Otherwise, it occurs leak oil, broke shaft, etc.
Application for komat-su/Shantui/Kawasaki/Cater-pi-ll-ar machine:
Wanxun Hydraulic Gear Pump Factory Show:
More than 30 years experience in gear pump design and research. Professional specialized in hydraulic pump components of Koma-tsu construction Vehicle since 1983. We care much on the quality control system in each step, from the raw material choosen, machine use, professional worker to make sure client get the best quality product!
Our products include: Koma-tsu and Cater-pi-llar Steering pumps, hydraulic pumps, gear pumps, work pumps, valves, crankshafts, frictions, PCBN, pistons, Shan Tui torques, bearings, cylinder sleeves, piston rings, motors, generators, filter elements, service kits, superchargers and fuel injectors. Our products are used in bulldozers, loaders, excavators, such as D80A-12, D85A-18, D150A-1, D155A-1, D155A-3, D355A-3, WA470, WA470-3, WA500-3, Shan Tui, Huang He TY130, TY160, TY180, TY220, TY230, TY320, SD13, SD16, SD22, SD42 and SD42-3.
We have professional personnel and equipment to design as you request as long as you provide a sample or detailed drawings.
| Index | Description | Parts No. | Machine No. |
| 1 | Steer Pump | 705-12-33110 | D31/D39 |
| 2 | Work Pump | 705-12-32110 | D31A/E/P-17 |
| 3 | Transmission Pump | 113-15-00270 | D31A/P/Q-16 |
| 4 | Work Pump | 704-12-30100 | D31A-16/D31P-16 |
| 5 | Transmission Pump | 113-15-34800 | D31A-17 |
| 6 | Steer Pump | 705-11-33013 | D31E-17 |
| 7 | Steer Pump | 705-11-33016 | D31E-20 |
| 8 | Work Pump | 705-21-31020 | D31P/PL/PLL18-20 |
| 9 | Transmission Pump | 113-15-00470 | D31P/Q-/S17-18-20 |
| 10 | Work Pump | 705-52-21000 | D40A/P/PLL-3 |
| 11 | Work Pump | 705-12-32010 | D41A/E/Q/S-3/GD405A-1/GD505A-2 |
| 12 | Work Pump | 705-52-21070 | D41P-6/D41E-6K |
| 13 | Tandem Pump | 07400-30200 | D50A/P-16 |
| 14 | Main clutch Pump | 07426-71400 | D50A/P-16 |
| 15 | Steer Pump | 07429-71300 | D50A/P-16 |
| 16 | Tandem Pump | 07400-40400 | D50A/P-17 |
| 17 | Steer Pump | 07427-72400 | D50A/P-17 |
| 18 | Main clutch Pump | 07429-72302 | D50A/P-17 |
| 19 | Work Pump | 704-12-38100 | D50A-16-17-18 |
| 20 | Main clutch Pump | 07437-71300 | D50P-15 |
| 21 | Work Pump | 07438-67300 | 705-52-31070 |
| 22 | Work Pump | 704-11-38100 | D53A/P/S-16/17/D57S-1 |
| 23 | Steer Pump | 07429-71203 | D53A/P/S-16/17/D57S-1/D58E-1 |
| 24 | Transmission Pump | 07432-72203 | D53A/P/S-16/17/D57S-1/D58E-1/D75S-2 |
| 25 | Tandem Pump | 705-30-31203 | D60A/E/P/PL-6 |
| 26 | Work Pump | 07443-67503 | D60A/E/P/PL-6/D65A/E/P/PLL-6 |
| 27 | Work Pump | 07441-67503 | D60A/E/P/PL-8/D65A/E/P/PLL-8 |
| 28 | Tandem Pump | 07400-40500 | D60A/P/E-8/D70-LE |
| 29 | Steer Pump | 07430-72301 | D60A/P/E-8/D70-LE |
| 30 | Main clutch Pump | 705-41-03210 | PC12UU-2 |
Hot sale hydraulic gear pump:
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WA470 705-52-40280 705-52-40150 705-52-40130 705-52-30790 705-52-30280 705-52-20100 705-51-31140 705-51-30820 705-51-30820 705-51-20290 705-51-30580 705-51-20090 705-41-07210 705-40-01020 705-36-29540 705-14-41040
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WA500 705-56-34130 705-55-33080 705-52-31230 705-52-31130 705-52-30490 705-52-30390 705-52-30260 705-52-30130 705-22-44070 705-22-44020 705-22-40110 705-22-40070 705-12-44040 705-12-44010 705-12-40010 705-12-40040 705-12-38010 705-12-38011 704-30-36110 |
WA600 705-58-47000 705-58-46001 705-58-46000 705-57-46000 705-56-47000 705-56-44010 705-56-44001 705-55-43040 705-53-42010 705-53-42000 705-53-31020 705-52-31080 705-51-12090 705-23-30610 704-30-42140
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WA700 705-56-45010 705-56-43010 704-24-28203
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WA800 705-58-45030 705-58-43010 704-24-28230
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WA900 705-58-45040 705-58-45000 705-58-45010
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PC30 705-86-14060 705-86-14000 705-56-14000 705-55-14000 705-52-10070 705-41-02700 705-22-21000
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WA250 705-56-36082 705-56-36080 705-56-36040 705-51-20240 705-51-20170 705-13-28530 704-30-29110 705-22-35170 705-38-32030 705-41-04400 705-41-05690 705-57-21000 |
|
WA200 705-56-36090 705-56-26090 705-56-26081 705-56-26080 705-52-20050 705-51-20640 705-51-20400 705-51-20390 705-51-20290 705-51-20150 705-51-20090 705-41-05690 705-11-32210 418-15-11021 418-15-11020 418-15-11010 705-41-04400 705-41-05690 |
WA320 705-56-36050 705-55-34160 705-55-24130 705-51-32080 705-51-20480 705-51-20430 705-51-20280 705-51-20140 705-38-39000 705-21-26060
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WA150 705-73-29010 705-56-34690 705-51-20180 705-51-20170
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D375 705-58-44050 705-52-40100 705-52-40000 704-71-44060 704-71-44002 195-49-34100 198-49-34100 195-49-34100
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D575 705-58-44000 705-51-42080 705-51-42070 705-51-42060 705-51-42050 705-22-48010 705-21-46020
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D475 705-52-42170 705-52-42110 705-52-42000 705-52-40290 705-52-40160 705-52-30580 705-52-30240 705-21-43010 705-21-43000 704-72-44000 704-71-44071 704-71-44012 704-71-44050 704-71-44011 198-49-34100 705-22-40090
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HD985 705-52-42100 705-52-42090 705-22-44020 705-11-28010 705-52-42090 705-22-44020 705-11-28010 705-52-42090
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HD325 705-52-30051 705-52-30050 705-52-30040 705-22-38050 705-12-38010 705-12-38000 07439-66103 705-95-07081
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HD605 705-56-34630 705-52-32001 705-52-31170 705-52-31010 705-12-38211 705-95-03020 705-95-07100 705-95-03021
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WA350 705-56-34130 705-55-34180 705-52-30220 705-52-30190 705-52-30080 705-33-28540 705-21-40020 705-14-34530 705-13-34340 705-11-35010 704-30-32110
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WA380 705-56-34180 705-55-34190 705-55-34180 705-55-33080 705-55-33070 705-52-30220 705-52-30080 705-51-30600 705-51-20440 705-33-31203 705-33-28540 705-33-27540 705-21-40020 705-21-39070 705-21-28270 705-13-34340 705-13-31340 705-11-38240 705-11-35010
|
HM350 705-56-34590 705-56-33050 705-52-31210 705-12-38211
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|
PC200 705-56-24030 705-56-24020 705-51-10020 704-24-28230 704-24-28203 704-24-24420
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LW250 705-55-23020 705-56-34290 705-56-26030 705-56-23010 705-55-23020 705-52-30150 705-51-30170
|
HD605 705-56-34630 705-52-32001 705-52-31010 705-52-31170 705-12-38211 705-95-03020 705-95-07100 705-95-03021
|
HM300 705-56-34550 705-52-31180 |
More Komat-su gear pumps:
| Index | Description | Parts No. | Machine No. |
| 1 | Transmission Pump | 385-10234561 | W120-1-2-3.530 |
| 2 | Main pump | 705-11-38000 | W180-1.545/540-1/540-B-1/545-1 |
| 3 | Steering Pump | 705-11-33100 | W90-2 |
| 4 | Steering Pump | 705-11-36100 | W90-2-3.W120-3 |
| 5 | Transmission Pump | 385-10079282 | W90-3.W120-3 |
| 6 | Main pump | 705-51-32000 | W90-3.W120-3 |
| 7 | Main pump | 705-11-34100 | W90-3/LW160-1/S/N1001-up |
| 8 | Transmission Pump | 705-73-29010 | WA100-1/WA120-1/WA150-1/WA180-1/WA120-1C |
| 9 | Main /Steering pump | 705-11-33011 | WA100-1/WA120-3/WA120-3-3T/GD605A-3 |
| 10 | Main pump | 705-11-34011 | WA120-1/GD705A-4 |
| 11 | Transmission Pump | 705-73-30010 | WA120-3A/D/WA180-3 |
| 12 | Transmission Pump | 705-51-20170 | WA150-1/WA180-1/WA200-1/WA250-1/WA250-OC |
| 13 | Lift/dump pump | 705-51-20180 | WA150-1/WA180-3 SN20001- |
| 14 | Lift/dump/steering pump | 705-51-20070 | WA180-1.WA300-1 |
| 15 | Lift/dump/steering pump | 705-51-20090 | WA180-1/WA200-1 SN20001-/WA470-1 |
| 16 | Transmission Pump | 705-11-30210 | WA180-1/WA200-1/WA250-1 |
| 17 | Lift/dump/steering pump | 705-51-20150 | WA200-1 SN10001-19999/WA200-1C/PC80-1 |
| 18 | Lift/dump/steering pump | 705-51-20290 | WA200-1 SN20001-/WA250-3/WA470-1 |
| 19 | Lift/dump/steering pump | 705-51-20400 | WA200-1/WA200-1C/PC80-1 |
| 20 | Lift/dump/steering pump | 705-51-20640 | WA200-1-A |
| 21 | Lift/dump/steering pump | 705-52-20050 | WA200-1C/PC80-1 |
| 22 | Lift/dump/steering pump | 705-56-26090 | WA200-6 |
| 23 | Lift/dump/steering pump | 705-56-36090 | WA200-6 |
| 24 | Lift/dump/steering pump | 705-51-20240 | WA250-1 |
| 25 | Transmission Pump | 705-51-20390 | WA250-3/WA200-1-A WA150 WA250/WA250-OC |
| 26 | Lift/dump/steering pump | 705-56-36051 | WA250-5,WA270 |
| 27 | Lift/dump/steering pump | 705-56-36040 | WA250-6 |
| 28 | Lift/dump/steering pump | 705-56-36082 | WA250-6 |
| 29 | Lift/dump/steering pump | 705-51-20140 | WA300-1/WA320-1 |
| 30 | Lift/dump/steering pump | 705-51-20280 | WA300-1/WA320-1 |
| 31 | Lift/dump/steering pump | 705-51-22000 | WA300-1/WA320-1 |
| 32 | Lift/dump/steering pump | 705-55-24130 | WA300-3L/WA320-3CS.WA320-3DZ/WA300L-1/WA320-3 |
| 33 | Lift/dump/steering pump | 705-51-32080 | WA320-1/1LC/WA320-1R SN 20001- |
| 34 | Transmission Pump | 705-51-20480 | WA320-3/WA320-3C/WA320-3AP |
| 35 | Lift/dump/steering pump | 705-55-34160 | WA320-3/WA320-3X |
| 36 | Transmission Pump | 705-51-20430 | WA320-3CS.WA320-3DZ/WA320-3 |
| 37 | Lift/dump/steering pump | 705-52-30080 | WA350-1 WA350-0C |
| 38 | Transmission Pump | 705-11-35010 | WA350-1/WA380-1/WA400-1/WA420-1/WA380-1C |
| 39 | Lift/dump/steering pump | 705-52-30190 | WA350-1M |
| 40 | Lift/dump/steering pump | 705-56-34090 | WA380-1 |
| 41 | Lift/dump/steering pump | 705-52-30220 | WA380-1 SN10001-19999 WA350-0C |
| 42 | Lift/dump/steering pump | 705-56-34180 | WA380-1 SN20001- |
| 43 | Lift/dump/steering pump | 705-11-35090 | WA380-1/WA420-1 |
| 44 | Lift/dump/steering pump | 705-55-34140 | WA380-3 |
| 45 | Lift/dump/steering pump | 705-55-34180 | WA380-3 |
| 46 | Lift/dump/steering pump | 705-55-34190 | WA380-3/WA380-3DZ |
| 47 | Transmission Pump | 705-51-20440 | WA380-3/WA380-3DZ/WA380-3C |
| 48 | Lift/dump/steering pump | 705-51-30600 | WA380-5 |
| 49 | Lift/dump/steering pump | 705-55-33080 | WA380-5/WA400-5 |
| 50 | Lift/dump/steering pump | 705-56-34040 | WA400-1 |
| 51 | Lift/dump/steering pump | 705-56-34240 | WA400-1 |
| 52 | Lift/dump/steering pump | 705-56-34100 | WA420-1 SN20001- |
| 53 | switch/steering pump | 705-52-30360 | WA420-3/HD255-5 |
| 54 | Lift/dump/p.p.c pump | 705-52-30390 | WA420-3/WA420-3D |
| 55 | Transmission Pump | 705-22-40070 | WA420-3/WA470-3/WA420-3DZ/WA450-3/WA500-1-A |
| 56 | switch/steering pump | 705-52-30560 | WA420-3CS |
| 57 | switch/steering pump | 705-56-30560 | WA420-3CS |
| 58 | Lift/dump/p.p.c pump | 705-52-30550 | WA420-3CS/HM400-1 |
| 59 | switch/steering pump | 705-52-31150 | WA420-3CS/HM400-1 |
| 60 | switch/steering pump | 705-55-33100 | WA430-5-W |
| 61 | switch /p.p.c pump | 705-52-20190 | WA450-1/WA470-1 |
| 62 | switch /p.p.c pump | 705-52-20240 | WA450-1/WA470-1 |
| 63 | switch /p.p.c pump | 705-52-20100 | WA450-1/WA470-1/PC60-1 |
| 64 | Steering Pump | 705-12-37010 | WA450-1/WA470-1/WA450-1-A |
| 65 | Steering Pump | 705-12-37040 | WA450-1/WA470-1/WA450-1-A |
| 66 | Lift/dump pump | 705-14-41010 | WA450-1/WA470-1/WA450-2 |
| 67 | Lift/dump pump | 705-14-41040 | WA450-1/WA470-1/WA450-2 |
| 68 | Steering Pump | 705-12-40010 | WA450-1/WA470-1/WA500-1/HD465-2-3/HD605-5 |
| 69 | Lift/dump pump | 705-22-36060 | WA450-1-A |
| 70 | Lift/dump/p.p.c pump | 705-56-43020 | WA450-3 |
| 71 | Lift/dump/p.p.c pump | 705-52-40130 | WA450-3/WA470-3 |
| 72 | switch/steering pump | 705-52-30280 | WA450-3/WA470-3DZ/WA470-3-X |
| 73 | Lift/dump/p.p.c pump | 705-51-30580 | WA450-5L |
| 74 | Lift/dump/p.p.c pump | 705-52-30580 | WA450-5L |
| 75 | Lift/dump/p.p.c pump | 705-21-42120 | WA450-6 |
| 76 | Lift/dump/p.p.c pump | 705-52-40150 | WA470-3DZ/WA600-5/D2 |
| 77 | Lift/dump/p.p.c pump | 705-51-30820 | WA470-6A/WA470-6AS |
| 78 | Return Pump | 705-40-01020 | WA480-5-W |
| 79 | Lift/dump/p.p.c pump | 705-51-30590 | WA480-5-W |
| 80 | Lift/dump pump | 705-22-40110 | WA500-1 |
| 81 | Steering Pump | 705-52-30130 | WA500-1 |
| 82 | Steering Pump | 705-52-30260 | WA500-1 |
| 83 | Steering Pump | 705-52-31130 | WA500-1/3 |
| 84 | Transmission Pump | 705-12-38010 | WA500-1/3/HD325-6 |
| 85 | Emerg.Steer | 704-30-36110 | WA500-1C |
| 86 | Steering Pump | 705-12-38011 | WA500-3 |
| 87 | Lift/dump/p.p.c pump | 705-22-44020 | WA500-3/HD785-3-5/HD985-3-5 |
| 88 | Lift/dump/p.p.c pump | 705-52-30490 | WA500-3/WA500-3C |
| 89 | Trans/Lubr/Lev | 705-58-46000 | WA600-1 |
| 90 | trans/lub/switch pump | 705-58-46001 | WA600-1 |
| 91 | Lift/dump/steering/p.p.c pump | 705-56-44000 | WA600-1 SN10001-11096 |
| 92 | loader/steering/p.p.c pump | 705-58-47000 | WA600-1 SN11097- |
| 93 | Trans/Lubr/Lev | 705-57-46000 | WA600-1-A |
| 94 | Lift/dump/steering/p.p.c pump | 705-56-44001 | WD600-1 |
| 95 | Lift/dump/steering/p.p.c pump | 705-56-44010 | WD600-1 |
| 96 | Trans/Lubr/Lev | 705-58-46010 | WD600-1 |
| 97 | Trans/Lubr/Lev | 705-58-46020 | WD600-1 |
| 98 | Trans/Lubr/Lev | 705-58-46050 | WD600-1 |
| 99 | Lift/dump/p.p.c pump | 705-52-31080 | WA600-3 |
| 100 | Lift/dump/p.p.c pump | 705-53-31020 | WA600-3 |
| 101 | Trans/Lubr/Lev | 705-53-42000 | WA600-3 |
| 102 | Trans/Lubr/Lev | 705-53-42010 | WA600-3 |
| 103 | Lift/dump/p.p.c pump | 704-30-42140 | WA600-3C |
| 104 | Lift/dump/p.p.c pump | 705-22-39020 | WD600-3 |
| 105 | loader/steering/p.p.c pump | 705-56-47000 | WD600-3 |
| 106 | Transmission Pump | 705-55-43040 | WD600-6 |
| 107 | Trans/Lubr/Lev | 705-58-43010 | WA800-1-2/WA900-1 |
| 108 | Return Pump | 705-40-01041 | WA900L-3 |
| 109 | 705-52-31230 | 705-41-02480 | WA900L-3 |
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