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| Parameter | Specification | Testing Standard |
|---|---|---|
| COGENG Part Number | COGENG-707-99-32070-SWG | Internal Quality Standard QS-526 |
| Replaces OEM Part No. | Komatsu 707-99-32070 | Direct OEM Replacement |
| Piston Seal Material | Polyurethane (PU) Grade 95A | ISO 6072 |
| Rod Seal Material | Nitrile (NBR) with PTFE fill | ISO 6072 |
| Wiper Material | Polyurethane double-lipped | ISO 6194 |
| O-Ring Material | Nitrile (NBR) 70 Durometer | ISO 3601-1 |
| Wear Band Material | PTFE-filled composite | ISO 6811 |
| Backup Ring Material | Nylon 6.6 | ISO 1874-1 |
| Temperature Range | -40°C to +110°C (-40°F to +230°F) | ISO 2230 |
| Pressure Rating | Up to 32 MPa (4640 PSI) | ISO 10766-1 |
| Rotation Speed | 8-12 RPM maximum | Manufacturer Specification |
| Fluid Compatibility | Komatsu Super Hydraulic Fluid, mineral oil, synthetic | ISO 6743-4 |
| Shelf Life | 5 years in original packaging | ISO 2230 |
| Component | Material | Size Specification | Quantity | Function |
|---|---|---|---|---|
| Main Piston Seal | Polyurethane | 100mm ID x 8mm width | 1 | Primary pressure sealing |
| Rod Seal | NBR with PTFE | 70mm ID x 6mm width | 1 | Dynamic rod sealing |
| Buffer Seal | Polyurethane | 100mm ID x 6mm width | 1 | Pressure peak protection |
| Wiper Seal | Polyurethane double-lipped | 70.5mm ID | 1 | Contaminant exclusion |
| Wear Bands | PTFE composite | 100mm OD x 6mm width | 2 | Piston guidance |
| O-Rings | Nitrile (NBR) | Various sizes AS568 | 7 | Static sealing |
| Backup Rings | Nylon 6.6 | Various sizes | 4 | Anti-extrusion support |
| Guide Rings | PTFE-filled fabric | 100mm OD x 6mm width | 2 | Bearing surface protection |
| Gland Gasket | NBR | 75mm OD x 2.5mm CS | 1 | Gland static seal |
| Rotary Seal | Polyurethane | Special design | 1 | Swing rotation sealing |
| Manufacturer | Model Series | Specific Models | Year Range | Swing Capacity |
|---|---|---|---|---|
| Komatsu | WB146-5 | WB146-5, WB146-5N | 2005-2010 | 180° rotation |
| Komatsu | WB97S-5E0 | WB97S-5E0 Standard | 2006-2011 | 180° continuous swing |
| Komatsu | WB93S-5 | WB93S-5, WB93S-5E | 2007-2012 | 185° maximum rotation |
| Komatsu | WB97R-5E0 | WB97R-5E0, WB97R-5 | 2008-2013 | 190° with auto-leveling |
| Related Models | WB Series | WB140, WB150 compatible variants | 2004-2009 | Verify compatibility |
| Parameter | Specification | Tolerance | Application |
|---|---|---|---|
| Cylinder Bore | 100 mm | +0.10/-0.00 mm | Swing cylinder |
| Piston Rod Diameter | 70 mm | +0.00/-0.05 mm | Chrome-plated rod |
| Stroke Length | 680 mm | ±3 mm | Swing arc length |
| Rod Finish | Hard chrome plated | Ra 0.2-0.4 μm | Surface roughness |
| Operating Pressure | 27.4 MPa (280 kg/cm²) | ±2% | System design pressure |
| Rotation Range | 180° standard | ±2° | Backhoe swing range |
| Swing Torque | 12,500 Nm | ±5% | Maximum rotation force |
| Swing Speed | 10 RPM at max flow | ±10% | Rotation velocity |
| NO | Number | Name | Qty |
| 707-99-32070 | • KIT, GASKET | 1 | |
| 707-02-07731 | CYLINDER, ASSY. | ||
| 707-02-07730 | CYLINDER, ASSY. | 2 | |
| 1 | 707-76-55570 | • BUSHING | 1 |
| 2 | 707-58-50H70 | • PISTON ROD | 1 |
| 3 | 07179-12062 | • RING, SNAP | 1 |
| 4 | 707-29-10700 | • CYLINDER HEAD | 1 |
| 5 | 707-52-90250 | • BUSHING | 1 |
| 6 | 707-36-10780 | • PISTON | 1 |
| 7 | 01310-00820 | • DOWEL | 1 |
| 8 | 707-76-50930 | • BUSHING | 2 |
| 9 | 707-12-10230 | • CYLINDER | 1 |
| 10 | 01310-00812 | • DOWEL | 1 |
| 11 | 707-71-10120 | • THRUST WASHER | 1 |
| 12 | 707-81-30080 | • THRUST WASHER | 1 |
| 13 | 707-73-03010 | • RING, SNAP | 1 |
| 14 | 707-71-50200 | • CYLINDER | 1 |
| 15 | •• GASKET | 1 | |
| 16 | •• O-RING | 1 | |
| 17 | •• GASKET | 1 | |
| 18 | •• GASKET | 1 | |
| 19 | •• RING, WEAR | 1 | |
| 20 | •• O-RING | 1 | |
| 21 | •• RING, WEAR | 1 | |
| 22 | •• O-RING | 1 | |
| 23 | •• GASKET | 1 | |
| 24 | •• PACKING ROD | 1 | |
| 25 | •• O-RING | 3 | |
| 26 | •• O-RING | 1 | |
| 27 | 21D-09-89140 | GREASE NIPPLE | 1 |
| Performance Parameter | Value | Test Method | Importance |
|---|---|---|---|
| Seal Life Expectancy | 3,000 operating hours | ISO 7983 | Maintenance planning |
| Friction Coefficient | 0.07-0.11 | ASTM D1894 | Swing smoothness |
| Extrusion Resistance | 34 MPa sustained | ISO 1829 | Pressure handling |
| Rotation Accuracy | ±2° from center | Laser alignment | Operational precision |
| Swing Drift | <5° in 10 minutes | Load testing | Stability during operation |
| Emergency Stop | Full stop in <2 seconds | Dynamic testing | Safety requirement |
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...
