- EN
| Parameter | Specification |
|---|---|
| Product Name | Komatsu Hydraulic Cylinder Seal Kit |
| COGENG Part Number | 707-52-10660 (7075210660) |
| OEM Equivalent | Komatsu 707-52-10660, 7075210660 |
| Rod Diameter | 65 mm |
| Product Type | Hydraulic Cylinder Seal Kit |
| Application | Blade lift cylinders (Lift cylinder application) |
| Kit Type | Complete overhaul seal kit |
| Material | Iron + Rubber (seals: PU, NBR, HNBR, PTFE) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Supply Capacity | 500 PCS |
| Brand | Part Number |
|---|---|
| COGENG | 707-52-10660, 7075210660 |
| Komatsu | 707-52-10660, 7075210660 |
| Interchange | 707-52-10661, 707-52-10662 |
| Parameter | Specification |
|---|---|
| Rod Diameter | 65 mm (2.56 inches) |
| Cylinder Type | Lift cylinder (blade lift application) |
| Typical Bore | OEM specification (95-105 mm typical for D65PX-12) |
| Typical Stroke | 800-1200 mm |
| Component | Material Grade | Hardness | Temperature Range |
|---|---|---|---|
| Piston Seals | Polyurethane (PU) | 90-92 Shore A | -35°C to +110°C |
| Rod Seals | NBR + PTFE coating | 85 Shore A | -40°C to +120°C |
| Wiper Seals | Polyurethane (PU) | 88-90 Shore A | -35°C to +100°C |
| O-Rings | HNBR (Zetpol) | 70 Shore A | -40°C to +150°C |
| Wear Rings | PTFE + Bronze filler | — | -50°C to +200°C |
| Backup Rings | Nylon 66 (Glass filled) | — | -40°C to +120°C |
| Buffer Seals | Polyurethane | 90 Shore A | -35°C to +110°C |
| Parameter | Rating |
|---|---|
| Maximum Pressure | 350 bar (5,075 psi) |
| Operating Temperature | -40°C to +120°C |
| Fluid Compatibility | Mineral oil, synthetic hydraulic fluids |
| Seal Speed Rating | Up to 0.5 m/s |
| Service Life | 5,000+ operating hours |
| Item | Description | Quantity | Material |
|---|---|---|---|
| 1 | Piston Seal (Primary) | 2 | Polyurethane |
| 2 | Rod Seal (65mm - Step-cut) | 2 | NBR + PTFE |
| 3 | Wiper Seal (Double-lipped - 65mm) | 2 | Polyurethane |
| 4 | Buffer Seal | 2 | Polyurethane |
| 5 | Wear Ring (Piston) | 2 | PTFE Composite |
| 6 | Wear Ring (Gland - 65mm) | 2 | PTFE Composite |
| 7 | O-Ring (Gland to barrel) | 2 | HNBR |
| 8 | O-Ring (Piston to rod) | 2 | HNBR |
| 9 | O-Ring (End cap) | 4 | HNBR |
| 10 | Backup Ring (Various sizes) | 4 | Nylon 66 |
| 11 | Dust Seal (Rod wiper - 65mm) | 2 | Polyurethane |
| Parameter | Specification |
|---|---|
| Model | Komatsu D65PX-12 Bulldozer |
| Type | Crawler Dozer (Patrol/PX - Low ground pressure) |
| Series | Dash 12 |
| Engine | Komatsu SAA6D114E-3 |
| Engine Power | 160-180 kW (214-241 HP) |
| Operating Weight | 20,000 - 22,000 kg |
| Cylinder Type | Function | Quantity per Dozer | Rod Diameter | Kit Compatibility |
|---|---|---|---|---|
| Blade Lift Cylinder (Left) | Raises/lowers left side of blade | 1 | 65mm | ✓ Full compatibility |
| Blade Lift Cylinder (Right) | Raises/lowers right side of blade | 1 | 65mm | ✓ Full compatibility |
Note: This seal kit is specifically designed for the 65mm rod diameter lift cylinders on the D65PX-12. Two kits are required for a complete blade lift system rebuild (one per side). Verify cylinder dimensions with your equipment manual before ordering. Contact COGENG with your machine serial number for exact compatibility confirmation.
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