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| Parameter | Specification | Testing Standard |
|---|---|---|
| COGENG Part Number | COGENG-707-99-26530-HSK | Internal Quality Standard QS-524 |
| Replaces Part No. | 707-99-26530, 7079926530 | Premium Alternative Replacement |
| Primary Seal Material | COGENG Polyurethane Plus™ | ISO 6072 (Enhanced) |
| Secondary Seal Material | COGENG Nitrile-Tech™ with PTFE | ISO 6072 (Enhanced) |
| Wiper Material | Polyurethane triple-lipped | ISO 6194 |
| O-Ring Material | HNBR (Hydrogenated Nitrile) | ISO 3601-1 |
| Wear Ring Material | PTFE-PEEK composite | ISO 6811 |
| Backup Ring Material | Reinforced nylon composite | ISO 1874-1 |
| Temperature Range | -45°C to +125°C (-49°F to +257°F) | ISO 2230 |
| Pressure Rating | Up to 42 MPa (6090 PSI) | ISO 10766-1 |
| Fluid Compatibility | All major hydraulic fluids | ISO 6743-4 |
| Enhanced Features | Anti-extrusion, Low-friction design | COGENG proprietary |
| Component | Material | Size Specification | Quantity | Enhanced Features |
|---|---|---|---|---|
| Main Piston Seal | Polyurethane Plus™ | 125mm ID x 9mm width | 1 | Anti-extrusion ribs |
| Rod Seal | Nitrile-Tech™ | 90mm ID x 7.5mm width | 1 | PTFE-impregnated |
| Buffer Seal | Polyurethane Plus™ | 125mm ID x 7mm width | 1 | Pressure-adaptive design |
| Wiper Seal | Triple-lipped PU | 90.5mm ID | 1 | Multi-stage filtration |
| Wear Bands | PTFE-PEEK composite | 125mm OD x 7mm width | 2 | Low friction, high load |
| O-Rings | HNBR | Various sizes AS568 | 8 | Superior heat resistance |
| Backup Rings | Reinforced nylon | Various sizes | 4 | Anti-collapse design |
| Guide Rings | Composite fabric | 125mm OD x 7mm width | 2 | Self-lubricating |
| Gland Gasket | HNBR | 95mm OD x 3mm CS | 1 | Enhanced compression |
| Dust Seal | Polyurethane | 90.3mm ID | 1 | Multi-lip design |
| Model Series | Specific Models | Cylinder Applications | Year Range | Performance Upgrade |
|---|---|---|---|---|
| Komatsu PC200 | PC200-8, PC200-8M0 | Boom, Arm, Bucket Cylinders | 2008-2015 | +15% longer service life |
| Komatsu PC210 | PC210-8, PC210LC-8 | Main Hydraulic Cylinders | 2009-2016 | Reduced friction |
| Komatsu PC220 | PC220-8, PC220LC-8 | All Hydraulic Cylinders | 2010-2017 | Improved pressure handling |
| Komatsu PC228 | PC228-3, PC228-5 | Swing Motor, Travel Motor | 2011-2018 | Enhanced temperature range |
| Feature | Standard Alternative | COGENG Premium Kit | Advantage |
|---|---|---|---|
| Service Life | 3,500-4,000 hours | 4,500-5,000 hours | +25% longer life |
| Temperature Range | -40°C to +110°C | -45°C to +125°C | Wider operating range |
| Pressure Rating | 35-38 MPa | Up to 42 MPa | Higher pressure capability |
| Friction Coefficient | 0.08-0.12 | 0.06-0.09 | Reduced energy consumption |
| Material Quality | Standard compounds | Enhanced proprietary materials | Superior durability |
| NO | Number | Name | Qty |
| 707-99-26530 | • KIT, GASKET | 1 | |
| 707-00-0Y901 | CYLINDER, ASSY. | 1 | |
| 1 | 707-76-45330 | • BUSHING | 1 |
| 2 | 721-58-55480 | • PISTON ROD | 1 |
| 3 | 707-29-90802 | • CYLINDER HEAD | 1 |
| 4 | 707-52-90300 | • BUSHING | 1 |
| 5 | 707-36-90570 | • PISTON | 1 |
| 6 | 707-67-36010 | • NUT | 1 |
| 7 | 721-11-90681 | • CYLINDER | 1 |
| 8 | 07179-12069 | • RING, SNAP | 1 |
| 9 | 707-76-45660 | • BUSHING | 1 |
| •• GASKET | 2 | ||
| •• O-RING | 2 | ||
| •• GASKET | 1 | ||
| •• O-RING | 1 | ||
| •• GASKET | 1 | ||
| •• GASKET | 1 | ||
| •• RING, WEAR | 1 | ||
| •• O-RING | 1 | ||
| •• PACKING ROD | 2 | ||
| •• GASKET | 1 |
A. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?
A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.
A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.
A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?
A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.)，Sometimes we will arrange as the customer's demand.
A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.
A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.
A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...
