| Parameter | Specification | Testing Standard |
|---|---|---|
| COGENG Part Number | COGENG-707-99-32190-STB | Internal Quality Standard QS-525 |
| Replaces OEM Part No. | Komatsu 707-99-32190 | 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 30 MPa (4350 PSI) | ISO 10766-1 |
| Fluid Compatibility | Komatsu Super Hydraulic Fluid, mineral oil, synthetic | ISO 6743-4 |
| Shelf Life | 5 years in original packaging | ISO 2230 |
| Safety Factor | 2.0x operating pressure | ISO 10766-1 |
| Component | Material | Size Specification | Quantity | Function |
|---|---|---|---|---|
| Main Piston Seal | Polyurethane | 115mm ID x 8mm width | 1 | Primary pressure sealing |
| Rod Seal | NBR with PTFE | 80mm ID x 6.5mm width | 1 | Dynamic rod sealing |
| Buffer Seal | Polyurethane | 115mm ID x 6mm width | 1 | Pressure peak protection |
| Wiper Seal | Polyurethane double-lipped | 80.5mm ID | 1 | Contaminant exclusion |
| Wear Bands | PTFE composite | 115mm OD x 6mm width | 2 | Piston guidance |
| O-Rings | Nitrile (NBR) | Various sizes AS568 | 6 | Static sealing |
| Backup Rings | Nylon 6.6 | Various sizes | 3 | Anti-extrusion support |
| Guide Rings | PTFE-filled fabric | 115mm OD x 6mm width | 2 | Bearing surface protection |
| Gland Gasket | NBR | 85mm OD x 2.5mm CS | 1 | Gland static seal |
| Dust Seal | Polyurethane | 80.3mm ID | 1 | Secondary contamination protection |
| Manufacturer | Model Series | Specific Models | Year Range | Application |
|---|---|---|---|---|
| Komatsu | WB146-5 | WB146-5 Standard | 2005-2010 | Front/Rear Stabilizers |
| Komatsu | WB146-5 | WB146-5N, WB146-5E | 2006-2011 | Outrigger Cylinders |
| Komatsu | WB146 Series | WB146-5S, WB146-5H | 2007-2012 | Leveling Jacks |
| Related Models | WB146 Series | WB146-3, WB146-4 | 2004-2009 | Verify compatibility |
| Parameter | Specification | Tolerance | Application |
|---|---|---|---|
| Cylinder Bore | 115 mm | +0.12/-0.00 mm | Stabilizer cylinder |
| Piston Rod Diameter | 80 mm | +0.00/-0.06 mm | Chrome-plated rod |
| Stroke Length | 520 mm | ±3 mm | Stabilizer extension |
| Rod Finish | Hard chrome plated | Ra 0.2-0.4 μm | Surface roughness |
| Operating Pressure | 24.5 MPa (250 kg/cm²) | ±2% | System design pressure |
| Holding Capacity | 9,500 kg per stabilizer | ±5% | Maximum stabilizer load |
| Deployment Time | 12-15 seconds | ±10% | Full extension time |
| NO | Number | Name | Qty |
| 707-99-32190 | • SERVICE KIT, SEAL | 1 | |
| 707-00-0Y830 | LEFT OUTRIGGER CYLINDER | 1 | |
| 707-00-0Y840 | LEFT OUTRIGGER CYLINDER | ||
| 1 | 707-11-10G50 | • BARREL | 1 |
| 2 | 707-76-45650 | • BUSHING | 1 |
| 3 | 707-58-50H30 | • ROD | 1 |
| 4 | 707-76-45650 | • BUSHING | 1 |
| 5 | 707-29-10320 | • HEAD | 1 |
| 6 | 707-36-10470 | • PISTON | 1 |
| 7 | 707-67-39010 | • NUT | 1 |
| 8 | NSS | •• RING, RETAINER | 1 |
| 9 | NSS | •• WIPER, ROD | 1 |
| 10 | NSS | •• SEAL, ROD | 1 |
| 11 | NSS | •• RING, BUFFER | 1 |
| 12 | NSS | •• O-RING | 1 |
| 13 | NSS | •• RING, BACK UP | 1 |
| 14 | NSS | •• O-RING | 1 |
| 15 | NSS | •• RING, BUFFER | 1 |
| 16 | NSS | •• SEAL, PISTON | 1 |
| 17 | NSS | •• RING, WEAR | 1 |
| 18 | 707-71-91280 | • SCREW, SET | 1 |
| 19 | 707-71-60100 | • PLUNGER | 1 |
| 20 | 04260-00635 | • BALL | 9 |
| 21 | 02782-10516 | • ELBOW | 1 |
| 22 | 07002-12034 | •• O-RING | 1 |
| 23 | 02896-11015 | • O-RING | 2 |
| Safety Aspect | Requirement | Verification Method | Standard |
|---|---|---|---|
| Load Capacity | 9,500 kg minimum holding | Load testing equipment | ISO 10766-1 |
| Pressure Integrity | No leakage at 1.5x operating pressure | Pressure test | ISO 4413 |
| Drift Rate | <5mm per 10 minutes | Measurement under load | Manufacturer spec |
| Emergency Deployment | Full retraction <30 seconds | Timing test | Safety requirement |
| Rod Surface Quality | No scratches >0.1mm depth | Visual inspection & measurement | ISO 10952 |
Q1: Which Komatsu excavator models use the 707-99-32190 premium hydraulic cylinder seal kit?
A: This premium seal kit is designed for specific Komatsu excavator hydraulic cylinders requiring OEM part number 707-99-32190 (also listed as 7079932190). Please verify compatibility with your machine model and cylinder part number before ordering.
Q2: What types of cylinders is this seal kit compatible with?
A: This kit is typically used for boom, arm, bucket, or swing cylinders on Komatsu excavators. Confirm your specific cylinder application with your machine serial number.
Q3: What makes this a "premium" hydraulic cylinder seal kit?
A: The premium kit features advanced polyurethane seals and high-grade rubber compounds designed for extended service life, superior leak prevention, and reliable performance in extreme hydraulic pressures and demanding excavator applications.
Q4: Is this an OEM or aftermarket seal kit?
A: It is an OEM-grade premium replacement kit, manufactured to meet or exceed original Komatsu quality standards for sealing performance, durability, and precise fit.
Q5: How do I purchase the COGENG 707-99-32190 premium hydraulic cylinder seal kit?
A: Contact us with your Komatsu excavator model and cylinder details for fitment verification, then order directly through our website or sales team for fast shipping.
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