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D155 D155
D155

Premium brand-new hydraulic fan motor engineered for heavy-duty crawler bulldozers. Delivers consistent fluid power to drive the cooling fan system, ensuring your D155 and D275 series maintain optimal engine temperatures under extreme earthmoving conditions.

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WA380-6 WA380-6
WA380-6

Premium brand-new hydraulic fan motor engineered for medium-to-large wheel loaders. Delivers reliable, continuous fluid power to drive the cooling fan system, ensuring your WA380, WA430, and WA470 series maintain optimal engine temperatures during demanding material handling operations.

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D65 D65
D65

Premium brand-new hydraulic fan motor engineered for 20-to-30-ton class medium-heavy crawler bulldozers. Delivers reliable fluid power to drive the cooling fan system, ensuring your D61, D65, and D85 series maintain optimal engine temperatures during continuous earthmoving operations.

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D275 D275
D275

Premium brand-new hydraulic fan motor engineered for heavy-duty crawler bulldozers. Delivers consistent fluid power to drive the cooling fan system, ensuring your D275 and D155 series maintain optimal engine temperatures under extreme earthmoving conditions.

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PC650-8 PC650-8
PC650-8

Ultra heavy-duty brand-new main hydraulic pump engineered for 65-ton class heavy mining excavators. Delivers massive fluid volume and extreme breakout force to ensure your PC650-8 and PC600-8 perform relentlessly in demanding surface mines and massive earthmoving projects.

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WA250 WA250
WA250

Premium brand-new hydraulic main pump engineered for 13-ton class versatile wheel loaders and toolcarriers. Delivers highly responsive fluid control to ensure your WA250-5 and WA250PT-5 execute rapid bucket lifting and multi-functioning tasks flawlessly on busy job sites.

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WA150 WA150
WA150

Premium brand-new hydraulic pump engineered for compact wheel loaders. Delivers highly responsive fluid control to ensure your WA150-5 and WA150-5TK maneuver smoothly and perform flawless bucket lifting in tight urban construction sites and material yards.

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D475A-5 D475A-5
D475A-5

Ultra heavy-duty brand-new main hydraulic pump engineered for 100-ton class ultra-large mining bulldozers. Delivers monumental fluid displacement and extreme peak pressure to sustain continuous, massive rock-ripping payloads for your D475 and D475A-5 operations.

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WD600-6 WD600-6
WD600-6

Ultra heavy-duty brand-new hydraulic steering pump engineered for 50-to-60-ton class heavy wheel loaders and wheel dozers. Delivers massive fluid displacement to ensure your WA600 and WD600 series maintain effortless, lag-free directional control under extreme payloads.

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PC4000-6 PC4000-6
PC4000-6

Ultra heavy-duty brand-new main hydraulic pump engineered for 300-to-400-ton class ultra-large mining shovels and excavators. Delivers monumental fluid volume and extreme breakout force to ensure your PC3000-6 and PC4000-6 series perform relentlessly in the world's most demanding surface mines.

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HM400-35 HM400-35
HM400-35

Heavy-duty brand-new hydraulic piston pump engineered for 40-ton class articulated dump trucks (ADT). Delivers massive fluid displacement to ensure your HM400-3M0 and HM400-5 achieve rapid dump body hoisting and flawless articulated steering under extreme payloads.

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D375A-6 D375A-6
D375A-6

Ultra heavy-duty brand-new hydraulic steering pump engineered for 70-ton class mining bulldozers. Delivers massive fluid displacement to ensure your D375 and D375A-6 series maintain absolute directional control and flawless hydrostatic performance under extreme rock-ripping loads.

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WA500-6 WA500-6
WA500-6

Ultra heavy-duty brand-new hydraulic piston pump engineered for 30-to-40-ton class heavy wheel loaders. Delivers massive fluid volume and continuous high pressure to ensure your WA500-6 and WA480-6 series execute rapid lifting and bucket loading cycles flawlessly.

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PC150-6,PC180-6 PC150-6,PC180-6
PC150-6,PC180-6

Premium brand-new main hydraulic pump engineered for 15-to-18-ton class medium tracked and wheeled excavators. Delivers consistent fluid volume and robust pressure to ensure your PC150-6, PC180-6, and PW150-6K perform flawlessly during urban construction and earthmoving.

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ZX75  ZX85 ZX75 ZX85
ZX75 ZX85

Premium brand-new main hydraulic pump engineered for 7-to-8-ton class midi excavators. Delivers ultra-precise fluid control and robust breakout force, ensuring your ZX75 and ZX85 series perform flawlessly in tight urban construction spaces.

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D85-15 D85-15
D85-15

Premium brand-new main hydraulic pump engineered for 30-ton class medium-to-large bulldozers. Delivers consistent fluid volume and robust pressure to ensure your D85-15, D85EX-15, and D85PX-15 series perform flawlessly during heavy earthmoving and land clearing.

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GD825A GD825A
GD825A

Premium brand-new hydraulic gear pump engineered for heavy-duty motor graders. Delivers highly responsive fluid control to ensure your GD805A and GD825A series achieve absolute blade precision during road grading and haul road maintenance.

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PC750-8 PC750-8
PC750-8

Ultra heavy-duty brand-new main hydraulic pump engineered for 70-to-80-ton class ultra-large mining excavators. Delivers monumental fluid volume and extreme breakout force to ensure your PC600, PC750, and PC800 series perform relentlessly in demanding surface mines.

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D51PX-22 D51PX-22
D51PX-22

Premium brand-new HST (Hydrostatic Transmission) main hydraulic pump engineered for the D51-22 series medium bulldozers. Delivers flawless hydrostatic drive control and robust pushing power, ensuring your D51PX-22 and D51EX-22 perform with absolute precision.

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D375 D375
D375

Ultra heavy-duty brand-new main hydraulic pump engineered for 70-ton class mining bulldozers. Delivers monumental fluid displacement and extreme peak pressure to sustain continuous, massive rock-ripping payloads for your D375 and D375A-6 operations.

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PC350-8M0 PC350-8M0
PC350-8M0

Heavy-duty brand-new main hydraulic pump engineered for 35-ton class large excavators. Delivers massive fluid volume and extreme breakout force to ensure your PC350-8M0, PC350-8, and PC300-8 series perform relentlessly in demanding earthmoving sites.

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PC78-6 PC78-6
PC78-6

Premium brand-new main hydraulic pump engineered for 7-to-8-ton class midi/compact excavators. Delivers ultra-precise fluid control and robust breakout force, ensuring your PC78 and PC88 short-tail series perform flawlessly in tight urban spaces.

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PC120-8 PC130-8 PC120-8 PC130-8
PC120-8 PC130-8

Premium brand-new main hydraulic pump engineered for 12-to-15-ton class medium and compact excavators. Delivers precise fluid control and robust breakout force to ensure your PC120 and PC130 series perform flawlessly on urban and general construction sites.

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PC210-7K PC210-7K
PC210-7K

Premium brand-new main hydraulic pump engineered for 20-ton class European specification (K-Series) tracked and wheeled excavators. Delivers precise fluid control and robust breakout force to ensure your PC210-7K and PW210-7K perform flawlessly.

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our service

Casting

Casting

With years of experience in the casting industry, we provide core casting solutions for your product manufacturing with our exquisite craftsmanship and rigorous quality control! Whether you are developing new products through casting, mass production with casting support, or developing customized castings, you can enjoy exclusive casting services throughout the entire process, helping your products seamlessly transition from design to mass production delivery. We boast a team of experienced casting engineers and a modern casting workshop, proficient in various casting processes such as sand casting, die casting, and precision casting. Our capabilities adapt to diverse material requirements, including cast iron, cast aluminum, cast copper, and stainless steel, perfectly matching the needs of multiple industries such as machinery manufacturing, automotive parts, construction machinery, hardware tools, and medical devices. From product drawing analysis and casting process optimization to mold making, casting, subsequent processing, and quality inspection, every step strictly adheres to international casting standards, ensuring high precision, sufficient strength, and stable performance of castings, effectively enhancing the core competitiveness of our products. We offer dedicated one-on-one service throughout the entire process, responding promptly to your needs and accelerating project progress, so you don’t need to worry about technical barriers or production delays. Professional mold making services – choosing us means choosing an efficient, reliable, and worry-free partner to help your products quickly capture the market.

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About Us

Guangzhou Yiyan Machinery Equipment Co., LTD

We have our own R&D and production team that supports small batch customization and sample processing related to hydraulic maintenance. We also provide online after-sales guidance to ensure quality and accessory compatibility, fully meeting various needs of hydraulic equipment.

  • Over 20 years of experience
  • Factory direct sales
  • OEM&ODM
  • Independently developed and produced
  • Small-batch customization
  • Hydraulic maintenance
  • Sample processing
  • Provide online after-sales guidance

20+

Years of experience

3000

Square-meter automated factory

100+

The country the customer is from

90%

Repurchase rate exceeds

10000+

Case database

99.8%

A pass rate

0.003mm

Numerical control machining

Latest News

Check out our blog

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Factory Display5
3 , June

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A comprehensive overview of reliable bulldozer models, providing professional selection guidance based on reliable quality and advanced technology
Industry News1
26 , December

A comprehensive overview of reliable bulldozer models, providing professional selection guidance based on reliable quality and advanced technology

D31 Engine power:D31EX/PX-22: 58 kW 78 HP Weight: D31EX-22: 7670 kg 16,910 lb D31PX-22: 8130 kg 17,930 lb D37 Engine power:D37EX/PX-22: 66 kW 89 HP Weight: D37EX-22: 7890 kg 17,400 lb D37PX-22: 8240 kg 18,170 lb D39EX Engine power:79 kW 105 HP @ 2200 rpm Weight: D39EX-22: 9040 kg 19,930 lb D39PX-22: 9480 kg 20,900 lb D51EX-22 Engine power:130 HP@ 2200 rpm Weight:27778-28881lb D65 Engine power:154 kW 207 HP @ 1950 rpm Weight: D65EX-15E0 Standard track 20280 kg 44,710 lb D65EX-15E0 long tracks 21020 kg 46,340 lb D65PX-15E0 21000 kg 46,300 lb D65WX-15E0 21140 kg 46,610 lb D155AX-8 Engine power:268 kW 360 HP @ 1900 rpm Weight:39500 kg 87,100 lb D275 Engine power:306 kW 410 HP Weight:49850 kg 109,900 lb D375-6 Engine power:474 kW 636 HP @ 1800 rpm Weight:71640 kg 157,940 lb D475-5 Engine power:641 kW 860 HP Weight:102500kg 226,010 lb
Industry News2
29 , December

A 66-ton electric mining truck has begun a six-month trial at the Granny Smith mine, aiming to improve energy efficiency and safety by combining the advantages of both

Goldfields’ Granny Smith gold mine recently introduced an Epiroc 66-ton electric mining truck for a six-month performance trial. This truck combines the performance of electric vehicles with the practicality of diesel engines, increasing climbing speed by up to 11%, reducing fuel consumption by approximately 7%, and incorporating multiple safety features. The trial will comprehensively collect operational data to support the mine’s transition to safer, cleaner, and more efficient underground transportation. The mine currently has 19 megawatts of solar power installed capacity, and by September 2025, approximately 20% of its electricity will come from solar energy.
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