SDLG E660FL E655H E675H E680H E690H E6135H Swing Motor Seal Kit Oil Seal Hydraulic Pump Excavator Hydraulic Repair Seals

SDLG E660FL E655H E675H E680H E690H E6135H Swing Motor Seal Kit Oil Seal Hydraulic Pump Excavator Hydraulic Repair Seals

Product Description

Feature of oil seal:

1.Long durability life.

2.Grind Piston diameter according to the assembly need.

3.Control piston tolerance range, make piston and cylinder body between the fit clearance to achieve the best effect .

4.Special specification piston according to the customers' request.

5.Most powerful impact strike , ,easy maintenance ,low price hydraulic breaker piston.

Huilian Machine professionally engaged in manufacturing various brand hydraulic hammers and spare parts, such as chisel,

frame, piston, front head and back head, inner and outer bush, rod pin, bolts and other supporting ancillary products. Our

company has perfect production equipment and test devices. The structure design of hammers is reasonable, raw material is

high quality steel, equipped with advanced processing equipment, exquisite heat treatment and grinding technology. Our

company is committed to hydraulic hammers development, production, marketing and related technical services. Company own

more than one hundred of professional mechanical engineer and first-class technical engineers. They have Professional technical

and experience, to provide quick and good after-sales service to our customers.

**Guardian of the Steel Behemoth's "Lifeline": The Unseen Oil Seal, The Visible Value**

When your excavator swings its powerful arm, moving earth and rock, you witness the surging power of the hydraulic system and the robust roar of the engine. But have you ever paid attention to the **oil seals**—those components hidden deep within its joints, working silently and unnoticed?

Though small, they are the **unsung heroes** guarding the value and life of the entire machine.

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#### **I. Small Seal, Massive Role: What Exactly Is It?**

An oil seal, seemingly a simple rubber ring or metal band, is in fact a precision critical sealing component. It is stationed at various rotating or reciprocating movement points of the excavator—such as hydraulic cylinders, travel motors, and swing mechanisms.

It has one sole mission: **"Guard the Borders".**
* **Internally**: It securely locks in lubricating oil and hydraulic fluid, ensuring core components operate under optimal lubrication.
* **Externally**: It firmly blocks the intrusion of all external contaminants like dust, mud, and moisture.

#### **II. The Cost of Neglect: Calculating the "Cost Bill"**

Neglecting a oil seal costing just tens or hundreds of dollars can trigger a "butterfly effect," leading to losses amounting to tens of thousands:

**1. Fluid Leaks: Visible "Bleeding"**
* **Direct Economic Loss**: Precious hydraulic fluid and lubricating oil continuously seep out, akin to the equipment "bleeding," resulting in a direct drain on net profits.
* **Performance Drop**: Insufficient oil pressure leads to slow, weak movements, causing a sharp decline in work efficiency, project delays, and loss of reputation and opportunity.

**2. Component Wear: The Unseen "Internal Injury"**
* **Core Component Failure**: Ingress of dust acts like "sandpaper," grinding away at precision surfaces like hydraulic cylinder walls and bearing races. The failure of a few-hundred-dollar seal can be enough to prematurely scrap core components worth thousands.
* **Chain Reaction**: Wear on a single part often triggers a cascade of failures, causing repair costs to grow exponentially.

**3. Total Machine Shutdown: The Ultimate "Killer"**
* **Unplanned Downtime**: Sudden failure brings the entire worksite to a halt. Every day of delayed schedules and idle labor consumes your project profits.
* **Plummeting Resale Value**: A machine with aging, leaking oil seals everywhere suffers a significant devaluation in the second-hand market.

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#### **III. The Smart Choice: Making Oil Seals Your "Guardian of Profitability"**

**1. Choice is Everything: Quality is the Foundation**
Don't risk a major loss for minor savings. Opt for genuine OEM or high-quality brand oil seals. Their superior oil resistance, wear resistance, and elasticity provide longer-lasting, more reliable sealing protection.

**2. Prevention is Better than Cure: Inspection is Key**
Incorporate oil seal checks into your daily inspection routine. Watch for any **slight oil stains or seepage traces**. Nip problems in the bud, stopping failures before they start.

**3. Professionalism Ensures the Future: Installation is Decisive**
Oil seal installation requires professional skill and tools. Improper installation can instantly damage the sealing lip, rendering a premium seal useless. Trusting a professional technician is one of the best investments you can make for your equipment.

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FAQ

Q: What's the package?
A. We usually packed by standard exported box or carton. And we can pack as your requirement.

Q: When we ship out?
A: In 1-3 days if in stock.(depend on quantity)

Q: Which shipping term you can supply?
A:By sea, air or by express ( DHL, FedEx, TNT, UPS,EMS ...)

Q: How long does it take to my address?
A:The Normal delivery time is 3-7 days, depending on which country you are in.

Q:How can I trace my order?
A:We will send you the tracking number after we send the goods.

Q: What's brand you can offer?
A:OEM,original, aftermarket

Q. If I only know the model, but can not offer parts No., what should I do ?
A. If possible, you can send us pictures of old products, nameplate or the size for reference.

Koko Shop Machine Co.,Ltd (Huilian Machinery) found in 2011, is a professional supplier who is specializd in construction machinery parts for excavator and attachments, including Hydraulic Hammer, Hydraulic Breaker Spare Parts, Quick Coupler, Hydraulic Grab, Ripper, Vibrator, etc. And, Excavator parts Engine, Hydraulic Pump, Swing motor, Travel motor, Main control Valve, Swivel Joint, Hydraulic seal kit. After 12 years developments, Huilian Machinery factory make quality parts with it's advance technology and advance machines. Hydraulic Breaker Parts suitable for: Atlas copco, Soosan, Furukawa, Atlas Copco, Alpha, Bretec, BTI, CATEEEEEE, CP, Daemo, DMB, Alicon, D&A, Doosan, EDT, Epiroc, Everdigm, Fine, Furukawa, General GB, Hammeroc HR, Hyundai HDB, Indeco HP MES, JCB, Kent, KCB, Komac, Komatsu JTHB, JKHB, Korota, Krupp, Kwanglim, Konan, Montabert, MSB, MTB, Noah, NPK, Okada, OKB, Omal, Poqutec, Powerking, Promove, Rammer, RB Hammer, RBI, Rhino, , Soosan, Stanley, Teisaku, T&H, Toku, Toyo, UBTECH, ECand so on. Hydraulic Excavator Parts suitable for: Komatsu, Hitachi, EC, Hyundai, Kobelco, Sumitomo, Kato, Doosan, JCB, cx, Sany, Liugong, XCMG, Xugong, Zoomlion, etc. OEM and ODM service offered.

In order to meet different customers' needs, Huilian Machinery also purchases Genuine Parts from German, Japan, Korea. And we established a long-term business relationship with customers from all over the world, like: U S A, Mexico, Saudi Arabia Kenya, Algeria, UAE, Russia, Morocco, etc. In 2023, Huilian Machinery became Distributors of easywork engineering machinery (SANY Group) in Russia and indonesia.

Koko Shop Machine is continuously seeking the chances to meet all the friends both from home and abroad for win-win cooperation.

And we believe that quality parts will take us to a further place. Let’s build a better tomorrow, together!

Introduction to Koko Shop Company

CertifiCATEEEEions

Enteprise Honor

Service Brand

Our Factory

Koko Shop Machine Management Department is an important control method for processing quality. It equipped with the most advanced inspection equipments The professional control devices,it can provide accurate reference data to choose the most suitable material and accessories, which also effectively control parts quality. Besides, it also provides digital information for engineers and quality controller to determine feasibility for spare parts after processing. This is the working processing of quality control.

Chooing steady quality supplier. After purchasing raw material, duing testing if it is proved well, then we will arrange these eligible matrial that come into warehouse.

When the spare parts finish and come into testing working conditon. Every worker will be responsible for their spare parts. They will give out fact testing date and results. After proving testing date is accord with delivery standard. Then Koko Shop Machine Quality Management Department will allow these spare parts that go to packing department and packing.

Before delivery, Koko Shop Machine Quality Management Department should check all mark and packing conditon. If it is prove it is accord with exporting standard and customer's requirement. Then they will allow these equipment come into fininshed product area. 

Of course Koko Shop Machine Quality Management Department have the right to make sample testing for every production step to make sure product quality.