Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Payment Terms | MoneyGram,T/T,Western Union,D/P,D/A,L/C |
| Supply Ability | 100 |
| Delivery Time | 2 weeks |
| Packaging Details | wooden box |
| Displacement Range | 8.2–280 cc/r (adjustable for variable-displacement pumps) |
| Rotation Direction | Clockwise (CW, standard), Counterclockwise (CCW, custom order only) |
| Axial piston pumps, gear pumps | Match displacement to equipment power demand; higher cc/r = larger flow rate |
| Operating Temperature | Standard: -20°C to 90°C; Custom low-temperature: -40°C to 90°C (special oil seal) |
| Mounting Standard | SAE A/B/C/D, Custom flange/foot mounting for special equipment |
| Model Number | CAT |
| Place of Origin | USA |
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Product Specification
| Payment Terms | MoneyGram,T/T,Western Union,D/P,D/A,L/C | Supply Ability | 100 |
| Delivery Time | 2 weeks | Packaging Details | wooden box |
| Displacement Range | 8.2–280 cc/r (adjustable for variable-displacement pumps) | Rotation Direction | Clockwise (CW, standard), Counterclockwise (CCW, custom order only) |
| Axial piston pumps, gear pumps | Match displacement to equipment power demand; higher cc/r = larger flow rate | Operating Temperature | Standard: -20°C to 90°C; Custom low-temperature: -40°C to 90°C (special oil seal) |
| Mounting Standard | SAE A/B/C/D, Custom flange/foot mounting for special equipment | Model Number | CAT |
| Place of Origin | USA | ||
| High Light | CAT excavator hydraulic plunger pump ，medium-sized excavator hydraulic motor ，20-36 ton excavator hydraulic pump | ||
438-1293,244-8479,272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for
| Pump Type | OEM Part Number | Applicable Equipment Model | Displacement (cc/r) |
| Axial Piston Pump | 487-6207 | 301.5/301.6/301.7CR | 12.5 |
| Axial Piston Pump | 423-0097 | 305.5E/306E/307E | 65 |
| Axial Piston Pump | 272-6959 | 325D/329D/DL | 145 |
| Axial Piston Pump | 369-9655 | 374F/390F | 280 |
| Axial Piston Pump | 307-3063 | 415F/416F/422F | 112 |
| Gear Pump (Pilot) | 560-0886 | Full Range Excavators | 8.2 |
| Axial Piston Pump | 295-9426 | 349 Series | 160 |
| Gear Pump (Auxiliary) | 175-6253 | Loaders/Backhoes | 10.5 |
| Main pump: 487-6207 CA4876207,566-7021,241-7972,163-9762,241-9299 |
| • Adaptation: 301.5/301.6/301.7CR/301.8/302CR/302.5C/303.5, etc |
| Pilot/gear pump: 560-0886, 211-6626 |
| 2, Small excavator (3-10 tons) |
| Main pumps: 423-0097, 397-3941, 214-1091, 4I-1023, 348-7627, 7Y-4002, 247-7867, 358-5004 |
| • Adaptation: 305.5E/306E/307D/308E/312D/317, etc |
| Pilot/gear pump: 126-2016, 284-3536 |
| 3, Medium sized excavator (20-36 tons) |
| Main pumps: 272-6959, 289-7917, 272-6955, 259-0815/10 R-8707,451-9302,341-2860,567-9721,593-8367,436-6669,438-1293,244-8479,272-6957,339-0513,123-2233,126-2073,119-5407,497-8499,114-0602,0R-8102 |
| • Adaptation: 320D/D2/323D2/326GC/329D/330D/336D/D2XE, etc |
| Rotary pumps: 204-4916, 204-4922 |
| Pilot/gear pump: 175-6253, 397-6960 |
FAQ:
Q1: What is the role of a charge pump in Cat variable-displacement pumps?
A: The charge pump supplies low-pressure oil to lubricate internal pump components and maintain control chamber pressure for displacement adjustment.
Q2: How to test a Cat hydraulic pump for internal leaks?
A: Perform a pressure holding test: close the outlet valve, maintain pressure for 5 minutes, and check if the pressure drops beyond the allowable range (leaks indicate internal wear).
Q3: What is the application of Cat pump part number 550-4341?
A: 550-4341 is a main pump suitable for mid-to-large excavators like 336GC/340/345GC.
Q4: Can using the wrong hydraulic oil viscosity damage the pump?
A: Yes—oil with too high viscosity increases startup load and friction, while too low viscosity reduces lubrication and causes internal wear.
Q5: What is the warranty period for a new Cat OEM hydraulic pump?
A: The standard warranty period for new Cat OEM pumps is 12 months or 2,000 operating hours, whichever comes first, when installed by an authorized dealer.
Q6: How to dispose of a damaged Cat hydraulic pump?
A: Contact an authorized Cat service provider or a qualified waste disposal company to ensure compliance with local environmental regulations for hydraulic component disposal.
Company Details
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
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