Timing Chain | High-performance engines (e.g., GR Corolla), Heavy-duty trucks (e.g., Coaster Fuel Cell) | Material: High-Strength Steel Tensile Strength: Industry: 500 MPa ▲ Base: 600 MPa ▲ Advanced: 700 MPa (ASTM A36) | Enhanced durability under extreme stress Longer lifespan in high-heat environments | Higher cost for advanced versions Requires precise installation tools |
Timing Chain Guide | Low-friction applications (hybrid/electric engines like Prius) | Material: Composite Plastic Friction Coefficient: Industry: 0.3 ▲ Base: 0.25 ▲ Advanced: 0.2 (ISO 1211) | Reduces wear on chain links Lightweight for fuel efficiency | Less durable than metal guides May degrade in prolonged heat exposure |
Camshaft Sprocket | High-RPM engines (sports cars like 86/GR86) | Tooth Profile: Industry: Standard ▲ Base: Modified ▲ Advanced: Optimized (ISO 2321) | Improved power transmission efficiency Reduced noise at high RPMs | Requires precise alignment Higher replacement cost for advanced designs |
Crankshaft Sprocket | Diesel engines (e.g., 3.0 D4D trucks) | Load Capacity: Industry: 500 Nm ▲ Base: 600 Nm ▲ Advanced: 700 Nm (SAE J1199) | Handles heavy torque loads Prevents slippage in rugged conditions | Increased inertia Heavier than standard versions |
Chain Tensioner | Variable-speed engines (hybrids like Prius PHV) | Tension Stability: Industry: ±5% ▲ Base: ±3% ▲ Advanced: ±1% (ISO 10833) | Maintains consistent performance across speeds Minimizes chain slack | Complex design Higher failure risk in extreme temperatures |
Chain Adjuster | Fleet vehicles (e.g., Coaster buses) | Adjustment Range: Industry: 5mm ▲ Base: 8mm ▲ Advanced: 10mm (Custom spec) | Extends service intervals Easy maintenance access | More components Risk of misadjustment by untrained technicians |