Competitor Excavator Construction Machinery Parts Hydraulic 704-71-44071 Gear Pump

• After-sales Service: Sampletraining/Online Support/Changing Spare Parts
• Warranty: 1 Year
• Type: Pump
• Model NO.: 704-71-44071
• Application: Excavator
• Certification: CE, ISO9001: 2000
• Condition: New
• Package Gross Weight: 10kg
• Rotational Speed: 4000r/Min
• Power: Hydraulic
• Applications: Machinery Manufacturing
• Material: Cast Iron
• Mesh Form: External Engaged
• Tooth Curve: Involute
• Pump Type: Normal Line Gear Pump
• Structure: Ball Bearing Construction
• Swerve: Cc,Ccw,Bi-Rotational
• Minimum Displacement: 16
• Maximum Displacement: 64
• Color: Silver
• Tooth Flank: Involute
• Delivery Time: in Stock
• Transport Package: Standard Packing
• Specification: 30*30*30
• Trademark: Genuine Brand New
• Origin: China
• HS Code: 8431499000
• Production Capacity: 5000pieces/Years

Product Description

Product Parameters

Part Number	704-71-44071
Type	Fixed-displacement external gear pump (likely for auxiliary hydraulic systems)
Application	- Target Equipment: Ko-matsu HD465/HD785 Dump Trucks, D375A Bulldozers, or large excavators - Drives critical functions: transmission lubrication, hydraulic oil cooling, or pilot control systems
Function	- Converts engine/electric motor rotation into hydraulic flow - Provides continuous, positive-displacement flow with minimal pulsation
Hydraulic Parameters	- Displacement: 44 cm³/rev (2.68 in³/rev)  - Rated Pressure: 180 bar (2,610 PSI) - Max Pressure: 220 bar (3,190 PSI) - Rated Speed: 1,500-2,000 RPM (engine-driven typical range) - Rated Flow: ~66 L/min (17.4 GPM) @ 1,800 RPM, ISO VG 46 oil at 50°C
Gear Design	- Tooth Form: 20° involute spur gears (8-12 teeth, case-hardened for wear resistance) - Material: Gear: Alloy steel (20CrMnTi, HRC 58-62); Pump Body: Cast iron (FC250) or aluminum alloy (ADC12 for lightweight models)
Port Connections	- Inlet: SAE 10 (3/4"-16 UNF) flange or 1" NPT (female) - Outlet: SAE 8 (1/2"-20 UNF) flange or 3/4" NPT (female) - Rotation: Clockwise (CW) or counterclockwise (CCW) - verify with shaft keyway orientation
Mounting	- Shaft Type: SAE B spline (6-key, 22 mm diameter) or ISO 2858 cylindrical shaft - Mounting Flange: SAE J744-C (4-bolt pattern, 140 mm diameter, M12 threads) - Weight: ~15 kg (33 lb) (cast iron version); ~10 kg (22 lb) (aluminum version)
Efficiency	- Volumetric Efficiency: ≥93% @ rated pressure - Mechanical Efficiency: ≥91% (gear mesh and bearing losses)
Temperature Range	- Ambient: -20°C to +80°C - Hydraulic Oil: -10°C to +110°C (continuous operation, dependent on oil type)
Filtration Requirement	- Oil cleanliness: ISO 4406: 18/16/13 (≤25 μm particles) - Requires upstream suction filter (100 μm screen) and return line filter (25 μm absolute)
Seals & Lubrication	- Seals: Double-lip NBR or FKM (Vit-on for high-temperature applications) - Lubrication: Self-lubricated via hydraulic oil (ISO VG 32/46/68 recommended)
Compliance	- Kom-atsu KES 08-2020 (hydraulic pump safety standard) - ISO 2228 (hydraulic fluid power - vocabulary for pumps/motors)

Product Photos 

ABOUT  US

JiNing Competitor Hydraulic co, Ltd. ,specializing in manufacturing cycloidal hydraulic motor and hydraulic products technology development, manufacturing and marketing of specialized enterprises. The company is committed to the development of high-tech design and manufacturing technology, import a number of large-scale CNC machining centers, CNC forming grinding machines, CNC internal grinding machines, etc., with a professional technical team and goods and technology import and export rights,.

The company is committed to the development of high-tech and manufacturing technology. We have outstanding experience in productdesign, manufacturing processes and quality assurance.0rbit motors mainly used in injection molding machines, fishery machinery,construction machinery, oil driling, machinery, mining machinery, agricultura machines and garden machines

Dur products have been exported to countries such as the United States Germany,Brazil,Canada,india, Turkey, Poland Thailand etc. Weaim to become a world-class manufacturer of hydraulic products, 0ur etemal pursuit and objectives is to improve the performance of our productsas a starting point and to provide the best products and service to our customers.
 

 

Our Advantage
1.Quick response within 12 hours 
2.Accept small order(MOQ:1pcs) 
3.Custom service.Unusual packaging,standard packing or as customer required 
4.Excellent after-sales service 
5.Strict quality control system.100% factory testing and inspection personnel in accordance with international standards for the high-frequency sampling, to ensure the quality of products manufactured
6.Accept ODM&OEM

Packing&Delivery&After-sale
1.Standard wooden case or cartonbox
2.Safety for long-distance transportation
3.All of the productions will be checked carefully before delivery

Pre-sales Service
1. Inquiry and consulting support
2. Sample testing support
3. Recommend the most suitable machine according to customer's purpose
4. Factory visiting welcomed

After-sales Service
1. Training how to install the machine
2. Training how to use the machine
3. Warranty 1 year
4. Engineers available to service machinery oversea
 

FAQ
 Q:1.What's your main application?
  --Hydraulic Orbit Motors and pumps
  --Excavator parts
 Q:2.What is the MOQ? --MOQ:1pcs.
 Q:3.How long is your delivery time?
 --Generally it is 2-3 days if the goods are in stock. or it is 7-15 days .if the goods are not in stock, it is according to quantity.
 Q:5.What payment method is accepted?
 --T/T,L/C,Paypal,Western union,Trade assurance,VISA
Q:6.How to Place your order 

1).Tell us Model number ,quantity and other special requirements.

2).Proforma Invoice will be made and send for your approval.
3).Productions will be arranged upon receipt of your approval and payment or deposit.
4).Goods will be delivered as stated on the proforma invoice.

                                                                                                                                                                                     

Certifications

Our company has passed ISO9001:2015 quality system certification and ISO14000 environmental management system certification, based on quality system, to provide customers with first-class products and services.

                                                                                                                                                                                     

Main Products

Main products are hydraulic orbit motors, hydraulic winches, hydraulic brakes, hydraulic steelhole punchers, hydraulic steerings, etc.

                                                                                                                                                                                     

HOT Products - Hydraulic Motors
 

The BM3 series cycloidal motor is a shaft distribution motor with bearing support, with a reliable high pressure shaft seal design, withstand high back pressure, suitable for hydraulic winches, mini excavators rotary motor.
 

 

The BM5 series adopts advanced disc structure, low speed performance, high volumetric efficiency, with wear self-compensating function, double row tapered bearings can withstand greater radial force, suitable for heavy load drive
 

 

The BM2 hydraulic motor is a kind of shaft distribution motor with high efficiency suitable for medium load injection molding machinery, fishery machinery, agricultural machinery, garden machinery.

 

The BM4 series cycloidal motor, blade hydraulic motor and BM6 series wheel motor.The BM4 series motor is a shaft distribution motor with double bearing support, the motor can withstand greater radial force, with a reliable high pressure shaft seal design, withstand high back pressure, can be used in series parallel, suitable for the rotary motor of wood grab, steel grab.

 

The BM6 series wheel motor adopts advanced disc flow structure design, low speed performance, high volumetric efficiency, and automatic wear compensation function. Double-row tapered needle roller bearings can bear large radial forces, which are used in the walking motor of small track equipment driven by heavy loads

 

If you need other models of products, please feel free to contact me!