High-Energy Friction Discs for Caterpillar (CAT) Equipment: D6, D8, D10 and 966, 988 Series
Heavy-Duty Replacement Friction Discs for Caterpillar (CAT) Machinery: Technical Guide
Caterpillar (CAT) is the undisputed leader in heavy construction and mining equipment. From the legendary D8 and D10 bulldozers to the versatile 966 and 988 wheel loaders, these machines rely on complex transmission and steering clutch systems. To maintain peak performance, friction discs must meet the strict CAT TO-4 oil specification. This guide focuses on high-demand CAT part numbers: 6Y7914, 9W5660, and 230-4017.
Caterpillar OEM Cross-Reference & Technical Specifications
Our aftermarket components are precision-engineered to provide the exact friction coefficient and oil-flow dynamics required by CAT's high-torque drivetrains.
| OEM Part Number | Dimensions (mm) | Groove Pattern | Material | Common Application |
|---|---|---|---|---|
| 6Y7914 | 315 * 210 * 4.5 | W-Groove | Sintered Bronze | CAT D8 / D9 Bulldozers |
| 9W5660 | 254 * 175 * 3.8 | Spiral Pattern | Sintered Bronze | CAT 966 / 980 Loaders |
| 230-4017 | 188 * 125 * 3.2 | Parallel Groove | Advanced Paper | CAT Transmission Clutches |

Quality Assurance: All YD Friction discs for CAT are surface-ground for flatness within 0.05mm to prevent drag.
Optimized Oil Flow & Thermal Stability
CAT machines often work in extreme heat. Our replacement friction materials ensure:
- TO-4 Spec Compatibility: Our friction binders won't break down when exposed to heavy-duty CAT transmission oils.
- Precision Grooving: W-groove and Spiral patterns are CNC-cut to ensure rapid oil flow and cooling during engagement.
- High Dynamic Friction: Provides the "bite" needed for steering massive dozers without clutch slippage.
Disclaimer: All manufacturer's names, OEM part numbers (e.g., CAT 6Y7914), and descriptions are used for identification purposes only. YD Friction products are high-quality aftermarket parts and are not products of the original manufacturer.
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