- CN
| Parameter | Specification | Testing Standard |
|---|---|---|
| Operating Pressure Range | 5-32 MPa (725-4,641 PSI) | ISO 10766 |
| Maximum Side Load | 12% of rod diameter at 25 MPa | SAE J1516 modified |
| Temperature Range | -35°C to +120°C (-31°F to +248°F) | ASTM D2000 |
| Cylinder Bore Range | 100-150mm (application specific) | ISO 286-2 |
| Rod Diameter Range | 60-100mm (application specific) | ISO 286-2 |
| Seal Material Hardness | 85-95 Shore A (component specific) | ASTM D2240 |
| Pressure Cycle Rating | 250,000 cycles at 25 MPa | ISO 10767-1 |
| Friction Coefficient | 0.12-0.20 (optimized for grading operations) | ASTM D1894 modified |
| Contaminant Exclusion | >96% efficiency for >15µm particles | ISO 4548-12 |
| Drift Rate | ≤2 mm/minute at 25 MPa, 15° side load | Proprietary test method |
| Abrasion Resistance | ≤70 mm³ loss (Taber, CS-17 wheel) | ASTM D4060 |
| Thermal Conductivity | 0.28-0.35 W/m·K | ASTM E1225 |
| Service Life | 4,000-6,000 hours in typical dozer service | Field validation data |
| Response Time | <0.3 seconds for full tilt adjustment | Field validation data |
| Component | COGENG Part Number | Material | Dimensions | Special Features | Quantity |
|---|---|---|---|---|---|
| Tilt Piston Seal | CG-TPS-24640-01 | HNBR with Kevlar® reinforcement | ID: 100-150mm (varies) | Asymmetric design for tilt loads | 2 |
| Tilt Rod Seal | CG-TRS-24640-01 | Polyurethane (EU) with graphite | ID: 60-100mm (varies) | Low stiction, high wear resistance | 2 |
| Heavy-Duty Wiper | CG-HDW-24640-01 | Dual-density PU with scraper | Wiper specific | Triple-lip contamination exclusion | 1 |
| Tilt Wear Bands | CG-TWB-24640-01 | Bronze-PTFE-carbon composite | Width: 20mm | Extra width for side load stability | 2 |
| Side-Load Backup Rings | CG-SLB-24640-01 | Glass-PEEK composite | Groove specific | Variable thickness for load compensation | 4 |
| Component | Function | Material | Technical Specification |
|---|---|---|---|
| Blade Load Compensator | Adjusts seal pressure under blade load | Microcellular PU | 87 ± 3 Shore A |
| Tilt Angle Guide | Maintains alignment during tilt operations | Oil-impregnated bronze | 0.15-0.25mm oil capacity |
| Shock Absorption Cushion | Protects during impact loads | Energy-absorbing TPU | 0.15 second activation |
| Linkage Seal | Pivot point protection | HNBR with fabric backing | Dozer specific linkage geometry |
| Component Type | Material | Quantity | Application |
|---|---|---|---|
| Static O-Rings | FKM (Grade 70) | 8 | Hydraulic connections |
| Port Seals | HNBR with anti-extrusion | 4 | High-pressure tilt ports |
| Gland Gasket | Fiber-reinforced composite | 1 | Gland interface sealing |
| Thread Sealant | PTFE paste | 1 kit | Fitting installation |
| Retaining Clips | Spring steel | 2 | Component retention |
| Equipment Type | Komatsu Models | Cylinder Type | Application |
|---|---|---|---|
| Medium Dozers | D65EX-12, D65PX-12 | Blade Tilt Cylinder | Standard dozer applications |
| Large Dozers | D85EX-12, D85PX-12 | Blade Tilt Cylinder | Heavy-duty dozing |
| Extra Large Dozers | D155AX-5, D275AX | Blade Tilt Cylinder | Mining and quarry operations |
| Integrated Toolcarriers | D39EX, D37EX | Tilt Cylinder | Versatile machine applications |
| Model Series | Specific Models | Kit Application | Special Notes |
|---|---|---|---|
| D65 Series | D65EX-12, D65PX-12 | Full compatibility | Most common application |
| D85 Series | D85EX-12, D85PX-12 | Full compatibility | Larger cylinder sizes |
| D155 Series | D155AX-5 | Seal components only | May require adaptation |
| D37/D39 Series | D37EX-21, D39EX-21 | Verify compatibility | May be different design |
| Equipment Model | Serial Number Range | Cylinder Version | Kit Compatibility |
|---|---|---|---|
| D65EX-12 | 120001-125000 | Early production | 707-99-24640-A |
| D65EX-12 | 125001+ | Updated design | 707-99-24640-B |
| D85EX-12 | 120001+ | Standard design | 707-99-24640-C |
| D155AX-5 | 50001+ | Heavy-duty version | Verify before use |
| Identification Method | What to Look For | Kit Relevance |
|---|---|---|
| Cylinder Tag | Part number, serial number | Determines exact kit required |
| Bore Diameter | Measured inside cylinder | Determines piston seal size |
| Rod Diameter | Measured on chrome surface | Determines rod seal size |
| Stroke Length | Full extension measurement | Determines wear band requirements |
| Mounting Style | Trunnion, clevis, flange | Determines hardware requirements |
| G-1 | 707-00-XE680 | CYLINDER GROUP,L.H. | 1 |
| G-2 | 707-00-XE690 | CYLINDER GROUP,R.H. | 1 |
| ==================== | |||
| 707-00-0E680 | CYLINDER ASS'Y,L.H. | 1 | |
| 707-00-0E690 | CYLINDER ASS'Y,R.H. | 1 | |
| 1 | 721-11-90460 | • CYLINDER,L.H. | 1 |
| 721-11-90470 | • CYLINDER,R.H. | 1 | |
| 2 | 07143-10505 | • BUSHING | 1 |
| 3 | 07145-00050 | • SEAL,DUST (KIT) | 2 |
| 4 | 707-29-90601 | • HEAD,CYLINDER | 1 |
| 5 | 707-52-90220 | • BUSHING | 1 |
| 6 | 707-51-45030 | • PACKING,ROD (KIT) | 1 |
| 7 | 707-51-45640 | • RING,BUFFER (KIT) | 1 |
| 8 | 707-56-45580 | • SEAL,DUST (KIT) | 1 |
| 9 | 07179-12057 | • RING,SNAP | 1 |
| 10 | 07000-12085 | • O-RING (KIT) | 1 |
| 11 | 07146-02086 | • RING,BACK-UP (KIT) | 1 |
| 12 | 07000-12090 | • O-RING (KIT) | 1 |
| 13 | 721-58-45250 | • ROD,PISTON | 1 |
| 14 | 07143-10505 | • BUSHING | 1 |
| 15 | 07145-00050 | • SEAL,DUST (KIT) | 2 |
| 16 | 707-36-90360 | • PISTON | 1 |
| 17 | 07156-00912 | • RING,WEAR (KIT) | 1 |
| 18 | 707-44-90180 | • RING,PISTON (KIT) | 1 |
| 19 | 707-67-33010 | • NUT | 1 |
| 20 | 02896-11012 | • O-RING (KIT) | 2 |
| 21 | 20U-62-41620 | ELBOW,L.H. | 1 |
| 22 | 07002-11823 | O-RING (KIT) | 1 |
| 23 | 02896-11012 | O-RING (KIT) | 1 |
| ==================== | |||
| 707-99-24640 | SERVICE KIT | 2 |
Workspace Specifications:
Clean environment (ISO 4406 Class 8/7/5 minimum)
Adequate lifting capacity for cylinder (typically 50-150kg)
Dedicated cylinder work station
Temperature controlled: 15-25°C (59-77°F)
Specialized Tools Required:
Cylinder holding fixture
Bearing press tools (if bushing replacement needed)
Dial indicator set (0.001mm resolution)
Torque wrench set (calibrated)
Micrometer set (0-200mm range)
Surface finish comparator
Safety Protocols:
Complete hydraulic system depressurization
Blade properly supported and secured
Track blocking and machine stabilization
Eye protection during disassembly
