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438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

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438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for
438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for 438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

Large Image :  438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

Product Details:
Place of Origin: USA
Model Number: CAT
Payment & Shipping Terms:
Minimum Order Quantity: 1
Packaging Details: wooden box
Delivery Time: 2 weeks
Payment Terms: MoneyGram,T/T,Western Union,D/P,D/A,L/C
Supply Ability: 100
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438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

Description
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
Highlight:

CAT excavator hydraulic plunger pump

,

medium-sized excavator hydraulic motor

,

20-36 ton excavator hydraulic pump

CAT Medium-Sized Excavator Hydraulic Pump Components

Part Numbers: 438-1293, 244-8479, 272-6957 - Compatible with CAT medium-sized excavators (20-36 tons)

Product Specifications
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
Component Details
438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for 0
Main Pump: 487-6207

Compatible Part Numbers: 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

Part Numbers: 560-0886, 211-6626

Equipment Compatibility by Size Category
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

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

Frequently Asked Questions
Q1: What is the role of a charge pump in Cat variable-displacement pumps?
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?
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?
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?
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?
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?
Contact an authorized Cat service provider or a qualified waste disposal company to ensure compliance with local environmental regulations for hydraulic component disposal.

Tag:

excavator hydraulic pump for 301.5,

Carter hydraulic pump with warranty,

excavator pump compatible with 302CR

Contact Details
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Contact Person: Mr. liyun

Tel: +8615280488899

Send your inquiry directly to us (0 / 3000)

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Outlet Port Position: Top, Side, Bottom (customizable angle: 0°/90°/180°)

Axial piston pumps, gear pumps: Match displacement to equipment power demand; higher cc/r = larger flow rate

Oil Cleanliness Grade: Standard: NAS 9; Custom high-purity: NAS 6 (for precision control systems)

Seal Material: Nitrile rubber (NBR, standard), Fluororubber (FKM, custom for high-temperature oil)
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Applicable Pump Types: Application Notes

Axial piston pumps, gear pumps: Match displacement to equipment power demand; higher cc/r = larger flow rate

Main axial piston pumps: Overpressure customization requires reinforced internal components

All pump types: CCW pumps need matched drive system and control valve adjustments
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Parameter Category: Customizable Options

Displacement Range: 8.2–280 cc/r (adjustable for variable-displacement pumps)

Rotation Direction: Clockwise (CW, standard), Counterclockwise (CCW, custom order only)

Mounting Standard: SAE A/B/C/D, Custom flange/foot mounting for special equipment
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Variable-displacement axial piston pumps: Electric control enables remote flow adjustment for automated equipment

All pump types: Low-temperature customization requires anti-freezing hydraulic oil matching

Displacement Range: 8.2–280 cc/r (adjustable for variable-displacement pumps)

Outlet Port Position: Top, Side, Bottom (customizable angle: 0°/90°/180°)
235-4110、100-3259、121-7385, 175-6253、397-6960 CAT loader/two end busy hydraulic pump axial piston main pump gear pump pilot adapter 415F/416C/D/E/F/422F/426F/428D/F, engine C3.4/C4.4

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All pump types: CCW pumps need matched drive system and control valve adjustments

Main axial piston pumps: Overpressure customization requires reinforced internal components

Variable-displacement axial piston pumps: Electric control enables remote flow adjustment for automated equipment

Axial piston pumps, gear pumps: Match displacement to equipment power demand; higher cc/r = larger flow rate
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