Rocker Arm

The Rocker Arm is a critical component within the valve train of internal combustion engines, serving as the vital intermediary that transmits the force from the pushrod or camshaft lobe to open the intake and exhaust valves. Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. (FTM) brings its decades of expertise in high-precision and non-standard bearing manufacturing to deliver Rocker Arms that redefine performance and longevity in demanding engine environments.

Uncompromising Quality and Material Science

Our commitment to superior engine performance begins with material selection. FTMs Rocker Arms are engineered from premium high-grade materials, typically utilizing through-hardened alloy steels (such as 52100 or specific forged alloys) or cast nodular iron, chosen for their exceptional tensile strength, fatigue resistance, and ability to withstand extreme thermal cycling. The critical contact surfaces, including the rocker pad or roller tip and the trunnion bore, are precision-ground and often undergo surface treatments like nitriding or phosphating. This meticulous process ensures minimal wear, maximum durability, and extends the service life far beyond standard components, making them an ideal import substitution for high-specification requirements.

FTM Advanced Engineering and Precision

Leveraging our over 30 years of technical design experience, the geometry and kinematic design of our Rocker Arms are optimized for superior efficiency.

• Precision Geometry and Ratio: We ensure the exact rocker arm ratio is maintained under load, translating to precise valve lift and duration. This meticulous control directly impacts cylinder filling and scavenging, leading to enhanced volumetric efficiency and optimized engine torque across the RPM range.
• Friction Reduction: For roller-tipped and roller-fulcrum designs, FTM incorporates high-precision, low-friction bearings. This focus on rolling rather than sliding motion significantly reduces parasitic power loss and operating temperature, contributing to better fuel economy and reduced oil degradation.
• Weight Optimization: Utilizing advanced design principles, our Rocker Arms achieve an optimal strength-to-weight ratio. Reduced reciprocating mass minimizes valve float at high engine speeds, improving the reliability and performance ceiling of the entire valve train system.

Key Applications

Our high-precision Rocker Arms are essential components in:

• Automotive Engines: Performance cars and heavy-duty commercial vehicles.
• Engineering Machinery: Robust solutions for construction equipment and off-road machinery.
• Industrial Power Generation: Reliable operation in stationary power units.

Manufacturer Advantage Why Choose FTM

1. High-Precision Specialization: As specialists in high-precision and non-standard bearings, our core competency is in achieving extremely tight manufacturing tolerances (e.g., controlling bore diameter and parallelism to microns), which is critical for Rocker Arm longevity and quiet operation.
2. Import Substitution Capability: Our products are designed and manufactured to meet or exceed the performance specifications of leading international brands, providing a high-quality, reliable, and cost-effective alternative.
3. 30 Years of Technical Heritage: We possess deep technical design expertise, allowing us to not only manufacture standard designs but also to provide fully customized Rocker Arm solutions tailored to unique engine architectures or specific performance targets.
4. Integrated Solution Provider: We do not just supply the Rocker Arm component; we offer comprehensive bearing and mechanical part solutions to engineering and textile machinery sectors, ensuring system compatibility and optimal performance.

Frequently Asked Questions FAQ

1. What material is the primary construction of FTM Rocker Arms
   • Our Rocker Arms are primarily constructed from high-grade alloy steel or specialized cast nodular iron chosen for their superior strength and resistance to fatigue and wear.
2. Can FTM customize the rocker arm ratio or geometry for a specific engine
   • Yes absolutely As a specialist in non-standard components FTM excels at customizing geometry ratios and material specifications to meet unique engine design requirements.
3. What is the tolerance range for the fulcrum bore in FTM Rocker Arms
   • Leveraging our high-precision bearing background we maintain bore tolerances within extremely tight micron-level ranges to ensure a perfect fit and silent long-term operation.
4. Do your Rocker Arms come with a roller tip or a sliding pad design
   • We offer both sliding pad and roller tipped designs with the roller types incorporating our high-precision miniature bearings for maximum friction reduction and efficiency.
5. How does your Rocker Arm contribute to engine fuel efficiency
   • By reducing friction and maintaining precise valve timing our Rocker Arms minimize parasitic energy loss and optimize the engines volumetric efficiency leading directly to improved power output and better fuel economy.