The COGENG 707-52-11610 Bushing is a precision-engineered, premium-quality replacement component designed for Komatsu hydraulic cylinders. Unlike a seal kit, this component functions as a critical structural and guiding element within the cylinder assembly—specifically, it serves as the cylinder guide bushing that supports the piston rod, maintains concentric alignment, and absorbs radial loads during cylinder extension and retraction cycles. Manufactured to exacting OEM specifications, this bushing ensures safe, reliable, and smooth cylinder operation across the most demanding construction, mining, and material-handling applications.
In hydraulic cylinder design, the guide bushing plays a vital role that is often overlooked until failure occurs. It provides a low-friction bearing surface for the reciprocating rod, preventing metal-to-metal contact between the rod and the cylinder head/gland. When the bushing wears beyond tolerance, the rod begins to "walk" or wobble, leading to accelerated seal wear, rod scoring, cylinder drift, and eventual catastrophic leakage. The COGENG 707-52-11610 bushing is engineered to withstand the extreme pressures (35+ MPa), side loads, and cyclic fatigue typical of Komatsu excavator operation—delivering service life that matches or exceeds the original Komatsu component.
Crafted from high-grade wear-resistant material—typically a fabric-reinforced phenolic composite or a precision-machined bronze/steel alloy depending on the specific application—this bushing offers excellent dimensional stability, low friction coefficient, and high load-bearing capacity. Each unit is 100% dimensionally inspected to ensure exact fit within the cylinder gland and proper clearance with the rod. By choosing COGENG for your bushing replacement, you are not only addressing wear-related performance issues but also protecting your investment in new rod seals and piston seals—because a new seal kit installed with a worn bushing will fail prematurely. With global inventory, rapid dispatch, and dedicated technical support, COGENG keeps your Komatsu machinery operating at peak reliability.
| Figure | Description |
|---|---|
| Figure 1 | Isometric product view – High-resolution 3D rendering showing the bushing's complete cylindrical geometry, including inner and outer diameters, chamfered lead-in edges, and any oil-groove or lubrication channel features. |
| Figure 2 | Dimensional annotation diagram – Orthographic projection with all key dimensions (outer diameter, inner diameter, overall length, flange thickness if applicable, and groove positions) clearly labeled for verification against your original part. |
| Figure 3 | Cross-section analysis – Cutaway illustration revealing the bushing's wall thickness, material structure, and interface relationship with the cylinder gland, rod, and adjacent seals. |
| Figure 4 | Surface finish comparison – Magnified micrographs contrasting the COGENG bushing's precision-machined surface against a worn or scored original component, demonstrating the quality and wear-resistance advantage. |
| Figure 5 | Assembly orientation guide – Schematic showing the correct installation position within the cylinder gland (head), indicating the bushing's relationship to the rod seal, wiper seal, and O-rings. |
| Figure 6 | Wear and inspection point map – Highlighted areas prone to wear, with recommended inspection intervals and measurement checkpoints to determine if replacement is needed. |
| Figure 7 | Installation tooling diagram – Illustration of the recommended press or drift tools for bushing removal and installation without damaging the cylinder gland or the new bushing. |
| Figure 8 | Compatibility cross-reference chart – Visual guide comparing this bushing with related part numbers (707-52-11610, 707-52-11611, 707-52-91350, 707-52-91351) to assist with identification. |
The COGENG 707-52-11610 Bushing is compatible with a range of Komatsu excavators and heavy machinery, particularly larger-class models that use hydraulic cylinders with higher side-load capacities. This bushing is typically installed within the cylinder gland (head) assembly of boom, arm, or bucket cylinders. Always confirm your cylinder's dimensions and original part number before ordering.
Note: The 707-52-11610 bushing is frequently cross-referenced with related part numbers 707-52-91350, 707-52-91351, and 707-52-11611 in various applications . Please provide your machine's serial number and the cylinder's identification tag to our sales team for definitive compatibility verification.
Installation Steps (Visual Summary):
System preparation – Safely lower all attachments to the ground. Depressurize the hydraulic system by operating all control levers with the engine off. Remove the cylinder from the machine and position it securely on a clean workbench.
Disassembly – Remove the cylinder head gland from the barrel using a pin spanner or strap wrench. Extract the piston rod assembly from the barrel. Remove the gland from the rod end.
Bushing removal – Using a suitable press or drift tool, carefully push the old bushing out of the gland bore. Note the orientation of the bushing (which end faces the rod and which faces the seals) before removal. Inspect the gland bore for wear, scoring, or distortion.
Gland bore inspection – Thoroughly clean the gland bore and inspect the sealing grooves for damage. If the bore is worn beyond tolerance, the gland must be replaced—a new bushing installed in a worn gland will not hold proper clearance.
New bushing inspection – Unpack the COGENG 707-52-11610 bushing and verify all dimensions (outer diameter, inner diameter, length, chamfers) against your original part. Check for any shipping damage.
Preparation – Apply a thin film of clean hydraulic oil or assembly lubricant to the outer diameter of the new bushing and the inner bore of the gland. This facilitates installation and prevents galling.
Installation – Using a press or a carefully aligned drift and hammer, press the new bushing into the gland bore. Ensure it is seated fully and squarely—do not cock the bushing during installation. Use an installation sleeve or pilot tool if available to maintain alignment.
Final fit verification – After installation, verify the inner diameter clearance by sliding the rod through the bushing. The rod should move smoothly with a consistent, slight resistance—no binding or excessive play. Measure the clearance with a feeler gauge or dial bore gauge if possible.
Reassembly – Install the rod seal, O-rings, and wiper seal into the gland (if not already installed). Reassemble the piston to the rod, reinsert the rod assembly into the barrel, and torque the gland to specification. Refer to the cylinder's service manual for exact torque values.
Function test – After reinstallation on the machine, cycle the cylinder through 5–10 full strokes to verify smooth operation and check for any leakage or abnormal noise.
| Shipping Detail | Description |
|---|---|
| Shipping Methods | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.). The specific arrangement will be based on the cargo situation and destination. |
| Estimated Delivery Time | Based on the shipping time of the logistics company. The arrival time shown by the carrier's tracking system shall prevail. |
| Packing | Inner: VCI (Vapor Corrosion Inhibitor) polybag with desiccant. Outer: Reinforced export-grade carton with foam inserts to immobilize the bushing and prevent impact damage. |
| Payment Terms | Western Union, L/C (Letter of Credit), T/T (Telegraphic Transfer), MoneyGram, D/A (Documents against Acceptance), D/P (Documents against Payment) |
| Return Policy Point | Terms |
|---|---|
| Merchant Return Policy | Products shipped are not returnable or exchangeable. |
| Quality Guarantee | Every bushing is 100% dimensionally inspected (CMM), verified for material hardness and surface finish. A Certificate of Conformance is available upon request. Our QA protocol ensures a DOA rate of under 0.01%. |
| Pre-Shipment Confirmation | Photos and dimensional reports can be provided upon request before shipment to confirm correct part numbers. We strongly recommend providing your old bushing measurements for positive cross-reference prior to ordering. |
Q1: What is the difference between a bushing and a seal kit?
A: A bushing (导向套) is a structural component that provides bearing support and guides the piston rod within the cylinder gland, preventing metal-to-metal contact. A seal kit contains rubber and plastic seals (O-rings, rod seals, wipers) that prevent hydraulic fluid from leaking. Both are essential for proper cylinder function but serve entirely different purposes.
Q2: How do I know if my 707-52-11610 bushing needs replacement?
A: Key indicators include: visible wear grooves or scratches on the rod; excessive side-play in the rod when partially extended; cylinder drift under load; or hydraulic fluid contamination with metallic particles. Regular inspection during seal replacement is recommended.
Q3: Is this bushing compatible with my PC210 boom cylinder?
A: Yes, the 707-52-11610 bushing is commonly used in boom, arm, and bucket cylinder glands for PC200/210/220 series and larger models. However, verify your original part number or measure the bushing dimensions (OD, ID, length) to confirm.
Q4: What is the typical price range for this bushing?
A: Based on industry pricing data, this bushing typically ranges from approximately $220 to $250 USD per unit . For accurate and current pricing, please contact COGENG sales directly.
Q5: Can I install the bushing myself, or do I need a press?
A: Installation typically requires a hydraulic press or a heavy-duty drift and hammer setup. If you do not have access to proper pressing equipment, we recommend having the installation performed by a qualified hydraulic repair shop to avoid damaging the bushing or the gland.
Q6: Is this the same as the 707-52-11611 bushing?
A: These are related part numbers and are often grouped together in spare parts lists . However, they may have slightly different dimensions or material specifications. Always use the exact part number that matches your original component.
For pricing, bulk orders, or technical support, contact your COGENG supplier today.
Please provide your machine model and cylinder serial number for compatibility verification.
Sales Price: Please contact COGENG sales customer service for specific prices.
Shipping method: The specific arrangement will be based on the cargo situation.
Estimated delivery time: It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom of this datasheet.
| Feature | Benefit |
|---|---|
| ✅ OEM Replacement | Direct fit for Komatsu 707-52-11610—exact dimensions, no modifications required |
| ✅ Premium Quality | Manufactured from high-grade wear-resistant material for long service life |
| ✅ Critical Wear Component | Prevents metal-to-metal contact, protecting rod and seals from premature failure |
| ✅ In Stock — Fast Shipping Worldwide | Available from global warehouses; express options for urgent repairs |
| ✅ Pre-shipment Verification | Photos and measurement reports available—order with confidence |
| ✅ Non-returnable but Quality-Backed | 100% dimensionally inspected before packing—DOA risk effectively eliminated |
| Parameter | Specification |
|---|---|
| Part Number | 707-52-11610 |
| Component Type | Cylinder Guide Bushing / Gland Bushing (导向套) |
| Material | Fabric-reinforced phenolic composite or bronze-bearing alloy (application dependent) |
| Outer Diameter | Precision-machined to OEM specification—verify against original |
| Inner Diameter | Precision-machined to match corresponding rod diameter |
| Surface Finish | Machined to ≤ Ra 0.8 µm for low friction and long wear life |
| Maximum Operating Pressure | 35 MPa (5,076 psi) continuous |
| Operating Temperature | –40 °C to +110 °C (–40 °F to +230 °F) |
| Shelf Life | 5 years in original unopened packaging |
| Packaging | Individual VCI bag + foam-protected carton |
| Country of Origin | Manufactured in ISO 9001:2015 certified facility |
This datasheet is for informational purposes only. COGENG reserves the right to improve specifications without prior notice. Always refer to the product label and the installation instructions included with each unit. For cylinders with non-standard dimensions or special material requirements, please contact our technical support team for engineering consultation.
*shipping Details Return Sales*
Sales price:
Please contact COGENG sales customer service for specific prices.
Shipping method:
The specific arrangement will be based on the cargo situation.
Estimated delivery time:
It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom.
MerchantReturnPolicy:
The products shipped are not returnable or exchangeable.
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