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707-01-0R370 Komatsu WA900-3 Lift Cylinder Aftermarket
707-01-0R370 Komatsu WA900-3 Lift Cylinder Aftermarket
Heavy-Duty Main Lift Cylinder for Komatsu WA900-3 Loader.
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Part Number: 707-01-0R370
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Machine: Komatsu WA900-3 Mining Wheel Loader.
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Also Known As: Hoist Cylinder, Boom Lift Cylinder.
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Performance: High-pressure rated for heavy ore loading.
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Warranty: 1 Year / 2000 Hours.
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Alternative part numbers: 707-01-03549, 707-01-03649, 707-01-03749, 707-01-02800, 707-01-02810, 707-01-0ZF03, 707-01-03546, 707-01-03545, 707-01-03543, 707-01-03542, 707-01-0ZF13, 707-01-03645, 707-01-03644, 707-01-03642, 707-01-03641, 707-01-0ZF23, 707-01-03745, 707-01-03744, 707-01-03742, 707-01-03741, 707-01-0ZF43, 707-01-0ZF33, 707-01-02621, 707-01-02611, 707-01-02623, 707-01-02613, 707-01-02624, 707-01-02614, 707-01-02627, 707-01-02617, 707-01-01010, 707-01-26013, 707-01-03210, 707-01-01210, 707-01-07580, 707-01-03011, 707-01-07600, 707-01-03212, 707-01-07610, 707-01-16181, 707-01-07620, 707-01-16191, 707-01-0R370, 707-01-0J370, 707-01-0R380, 707-01-0J380, 707-01-0H990, 707-01-0J620, 707-01-0J130, 707-01-0J131, 707-01-0J030, 707-01-0J031
- Looking for an excavator cylinder? We also supply the PC800 hydraulic cylinder.
The SGWA900-3 Lifting Cylinder is a massive, heavy-duty hydraulic actuator engineered for the Komatsu WA900-3 Wheel Loader. Designed as a direct replacement for OEM Part Number 707-01-0R370, this cylinder provides the critical lifting power required for high-production loading operations in mines and quarries.
Also commonly referred to as the Main Hoist Cylinder or Boom Lift Cylinder, this component is built to withstand the extreme hydraulic pressures generated when lifting fully loaded buckets of iron ore or overburden. SEIGO Machinery manufactures this unit with reinforced barrel walls and oversized guide bushings to prevent ballooning and side-load wear under maximum payloads.
Technical Specifications
| Feature | Specification |
| Part Number | 707-01-0R370 |
| Machine Application | Komatsu WA900-3 / WA900-3E0 (Wheel Loader) |
| Position | Lift Cylinder / Hoist Cylinder |
| Function | Main Boom Lifting & Lowering |
| Rod Material | 42CrMo4 Induction Hardened (Impact Resistant) |
| Sealing System | NOK / Parker (High-Pressure Heavy Duty) |
| Operating Pressure | Rated for 350+ Bar Mining Spec |
| Warranty | 12 Months / 2000 Hours |
| Condition | 100% New Manufacturing |
Key Features & Performance
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Heavy-Lift Engineering: Designed to handle the immense breakout forces of the WA900 series. The cylinder tube utilizes high-tensile ST52/E355 steel to maintain structural integrity during peak lifting cycles.
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Leak-Free Hoisting: Equipped with premium V-packing sets and buffer seals from NOK/Parker, ensuring zero drift (sinking) when holding heavy loads aloft.
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Wear-Resistant Rod: The large-diameter piston rod is precision ground, polished, and hard chrome plated to resist scoring from abrasive dust common in open-pit environments.
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Direct OEM Fit: Manufactured to exact 707-01-0R370 specifications for pin-point alignment with the loader frame and boom, minimizing installation time.
Applications
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Open-pit mining loading (matching 100T+ Dump Trucks)
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Quarry aggregate handling
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Large-scale earthmoving
FAQ
Q1: Is 707-01-0R370 the same as 707-01-03011?
A: Both are lift cylinders for the WA900-3, but they cover different serial number ranges. 707-01-03011 covers SN 50001-Up; 707-01-0R370 covers later production. The cylinders are dimensionally identical — same 160mm rod x 260mm bore. Our shipping documents list all related part numbers.
Q2: Will 707-01-0R370 fit my WA900-1?
A: The WA900-1 originally used 707-01-01010. Dimensions are identical to 0R370, so the cylinder will physically fit. Confirm with our engineering team before ordering for your specific serial number.
Q3: What bucket size does the WA900-3 typically run?
A: The WA900-3 runs 11.5 m³ standard bucket or up to 13 m³ optional bucket. Our lift cylinder is rated for maximum loaded payload across both bucket configurations.
