ranroswang@hksparkling.com 
+86 138 2341 8469
730401000139 Hydraulic Suction Strainer for Sunward Excavators (81x171x282mm)
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Technical Specifications
· 81: Inner Diameter (ID) in millimeters
· 171: Outer Diameter (OD) in millimeters
· 282: Total Height / Length (H) in millimeters
· Primary Function: Installed in the hydraulic tank suction line to strain out large solid particles and coarse debris, protecting the main hydraulic pump from catastrophic abrasive wear.
· Filter Media: Typically constructed using a stainless steel wire mesh or stainless steel pleated design to handle high-vacuum suction environments without collapsing.
· Filtration Rating: Coarser than return filters, commonly rated around 100 microns (100µm) (often designated by industrial codes like WU-1000X100-J-665) to maintain high flow volume and prevent cavitation in the pump.
Thank you for choosing SPARKLING MACHINERY.
The 730401000139 suction strainer is engineered for high-flow stability. Because it sits on the intake side of the pump, it must allow oil to pass through with almost zero restriction. The 81mm internal diameter is optimized to maintain the "NPSH" (Net Positive Suction Head) required by Sunward’s high-performance hydraulic pumps. Its stainless steel mesh construction ensures it will not collapse under the vacuum pressure generated by the pump.
The SPARKLING MACHINERY NEW 730401000139 hydraulic suction strainer Photo:
Q&A Section
Q1: How do I know if my 730401000139 suction strainer is clogged?
A: The most common sign is a loud, high-pitched "screaming" or "whining" noise from the hydraulic pump (cavitation). You may also notice jerky movements or foam in the hydraulic oil, as a clogged strainer can cause the pump to pull air past the seals.
Q2: Can I replace this strainer without draining the hydraulic tank?
A: In most Sunward designs, the suction strainer is submerged. You will usually need to drain the tank or use a vacuum system on the tank vent to hold the oil in place while you quickly swap the strainer. Safety Note: Always ensure the engine is off and the system is depressurized.
Q3: Is a suction strainer enough to keep my oil clean?
A: No. Suction strainers only catch "rocks and bolts." You must also regularly change your Return Filter (like the 730403000395) and Pilot Filter to remove the microscopic particles that actually cause component wear.
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879