318CL Hydraulic Arm Cylinder 120mm Bore 1650mm Stroke for Komatsu Excavator 194-8418 Aftermarket
This high-quality aftermarket hydraulic arm cylinder is precisely engineered as a direct replacement for 318CL excavators. As a critical component of the working system, it controls the extension and retraction of the excavator arm to perform digging, lifting and material handling tasks, widely applicable in construction sites, road building, and agricultural engineering projects. All units are manufactured to meet original OEM specifications, with identical mounting dimensions, pin hole spacing and hydraulic port layout. Operators can complete direct bolt-on installation on site without any cutting, welding or secondary modification work.
| Item | Specification |
|---|---|
| Product Name | Hydraulic Arm Cylinder |
| Applicable Model | 318CL |
| OEM Part Number | 194-8418, 1948418 |
| Product Grade | Brand New High-Quality Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1 unit, sufficient stock for immediate delivery |
| QC Standard | ISO9001 certified, full hydraulic pressure and cyclic tests before shipment |
| # | Part No. | Description | Qty |
|---|---|---|---|
| All | 1948418 | CYLINDER & SEAL GROUP-STICK | 1 |
| 1 | 7X2563 | BOLT-PLT; (M20 X 2.5 X 60) | 32 |
| 2 | 7X2576 | BOLT; (M24X3X70-MM) | 12 |
| 3 | 8T4123 | WASHER-PLATED; (22X35X3.5-MM THK) | 32 |
| 4 | 8T4167 | WASHER-HARD; (26X44X4-MM THK) | 12 |
| 5 | 0964755 | PIN | 1 |
| 7 | 1U8846 | SEALANT (FOR LOCATIONS A) | |
| 8 | 2Y5503 | PLUG | 2 |
| 9 | 5P0767 | HOSE (.625 in. I.D.)17.02 dm(67 in.) | |
| 10 | 5D1026 | CLAMP-BAND; (9/16 TO 1 1/16) | 1 |
| ---- | USE AS REQUIRED | ||
| ---- | ORDER BY THE CENTIMETER | ||
| ---- | METRIC PART |
| Spec Item | Data |
|---|---|
| Bore Diameter | 120mm |
| Piston Rod Diameter | 90mm |
| Working Stroke | 1650mm |
| Rated Working Pressure | 31.4MPa |
| Factory Test Pressure | 47.1MPa (1.5 times the rated working pressure) |
| Barrel Material | High-tensile seamless alloy steel with precision inner honing |
| Piston Rod | 40CrMo heat-treated steel, 28~32μm hard chrome plating, HRC68~72 for superior wear resistance and anti-deformation performance |
| Matching Seal Kit PN | 194-8418K |
| Working Temperature | -25℃ ~ +85℃ |
| Structure | Double ear lugs with quenched copper wear bushings, built-in buffer device to reduce impact during operation |
- Perfect OEM Compatibility: Matches the original component in all structural sizes, connecting seamlessly with arm linkages and hydraulic pipelines to ensure stable running after installation.
- Robust Construction: The cylinder body and connecting lugs are thickened and reinforced, capable of bearing long-term cyclic loads and occasional impacts in harsh construction environments.
- Comprehensive Quality Assurance: Each finished cylinder undergoes full-stroke reciprocating test and high-pressure airtight test to eliminate internal and external oil leakage risks.
- Cost-Effective Alternative: Delivers performance equivalent to genuine Cat parts while significantly reducing procurement costs for maintenance workshops and equipment owners.
- Flexible Logistics Options: In-stock items can be dispatched within 3 working days. Air freight is available for urgent orders, while sea freight is recommended for bulk purchases to save costs.
Our factory has specialized in manufacturing hydraulic cylinders for excavators for over a decade. We supply a complete range of boom, arm and bucket cylinders for 318 series and other mainstream Cat models. With reliable quality and stable supply, our products are widely exported to aftermarket markets in Africa, Southeast Asia, the Middle East and South America, earning consistent trust from global customers.
Q1: Can this arm cylinder be used on 318B or 318D models?
A: No. Different generations of Cat 318 excavators adopt different part numbers and structural dimensions, which are not interchangeable. Please confirm the exact excavator model before ordering.
Q2: Does the standard package include the seal repair kit?
A: The seal kit is not included in standard products. You can purchase the dedicated repair kit separately and enjoy a favorable combined price for bundled orders.
Q3: What packaging is used for long-distance sea transportation?
A: Anti-rust oil is injected into the cylinder interior, and anti-rust grease is coated on the piston rod. The whole product is wrapped with waterproof PE film and packed in sturdy export plywood cases to ensure safe delivery.
Q4: Are there preferential prices for purchasing a full set of working device cylinders?
A: Yes. Combined orders for full cylinder sets (boom, arm, bucket) enjoy tiered discounts, and we provide consolidated shipment to help you save logistics costs.
Q5: What after-sales support is available if oil leakage occurs within the warranty period?
A: Please provide clear photos of the leakage area and excavator serial number. We will offer free seal replacement and professional remote technical guidance in a timely manner to resolve the issue efficiently.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.