Custom Robotics Springs & Precision Motion Components
High Dynamic Response | Zero Backlash Design | Engineered for 10M+ Cycles. We manufacture precision springs and elastic components for industrial arms, cobots, and humanoid hands.
Industry Overview
In robotics and automation, precision springs are the soul of motion control. Industrial robotic arms face the constant paradox of high load vs. lightweight design. Collaborative robots (Cobots) demand zero backlash for flexible feedback, while humanoid dexterous hands require high explosive force within millimeter-scale spaces. Standard springs fail under dynamic fatigue—Hershey Spring delivers reliable solutions that eliminate force decay and costly downtime.
Application Coverage
- Industrial Robots：Gravity Compensation / Balancing Cylinder Springs End-Effector / Gripper Return Springs ATC (Automatic Tool Changer) Locking Springs
- Collaborative Robots (Cobots)：Joint Torque Sensor Springs Electromagnetic Brake / Safety Brake Springs
- Mobile Robots (AMR / AGV)：Independent Suspension Shock-Absorber Springs Charging Contact Springs
- Humanoid / Bionic Robots：Finger Micro-Actuation Springs Foot Impact-Resistance Springs
Robotic Solutions & Customization Capabilities
Hershey Spring is engineered for precision motion control. We offer comprehensive solutions ranging from 0.03mm micro-joint springs to heavy-duty balancing springs. Utilizing high-tensile music wire and exotic alloys, combined with proprietary stress-relief processes, we ensure our springs maintain constant linearity during high-frequency oscillation. We eliminate resonance and hysteresis, enabling robots to achieve smoother, more precise trajectories.
Industry-Grade Materials
- High-Fatigue Music Wire
Selected from premium SWP-B or ASTM A228 steel. It is the standard for high-frequency robotic grippers and moving actuators, offering exceptional tensile strength.
- High-Strength Chrome Silicon
Essential for heavy-duty gravity balancing mechanisms. It operates under extreme stress levels with minimal thermal relaxation compared to carbon steel.
- Non-Magnetic Titanium
Ti-6Al-4V titanium alloy options for environments near magnetic-sensitive sensors or medical robots, providing lightweight and fully non-magnetic safety.
Mechanical/Functional Customization Options
- Miniaturization
For humanoid dexterous hands, we provide ultra-micro tension and torsion springs down to 0.03mm wire diameters to mimic delicate muscle-like movements.
- Rectangular / Flat Wire Springs
Designed for collaborative robot joints with limited space. These flat wire springs deliver 30%–50% higher load capacity than traditional round wire.
- Constant Force / Low-Rate Springs
Customized for soft grippers or tactile sensors. These low-stiffness springs enable gentle contact to protect fragile workpieces during handling.
Industry-Focused Processes
- 100% Automated Inspection
We use online CCD vision systems to monitor each spring’s free length and wire diameter in real time, ensuring a perfect fit and zero jamming in automated assembly lines.
- Precision Stress Relief
Strict conveyor furnace temperature control eliminates coiling-induced stress, ensuring our springs maintain consistent dimensions over long-term use.
Durability & Reliability Enhancements
- Presetting / Scragging
Springs are compressed to solid height to eliminate initial plastic deformation. This ensures robot Z-axis or balancing mechanisms maintain constant force over millions of cycles.
- Shot Peening
Imparts residual compressive stress to the spring surface. This significantly enhances resistance to micro-cracks and extends fatigue life to over 10 million cycles.
Quality Assurance & Certifications
FAQ
Yes. For high-frequency robotics applications, we use imported high-fatigue Music Wire or Oil Tempered Wire (e.g., SWOSC-V). Through specialized shot peening and pre-setting processes, we can achieve a fatigue life ranging from 1 million to over 10 million cycles.
Absolutely. We manufacture micro springs with wire diameters as small as 0.08mm. We also specialize in custom shaped springs (such as square or flat wire springs) to provide higher loads in limited spaces, helping you achieve a lightweight structural design.
We offer a robust supply chain of special materials, including Inconel, Elgiloy, and Titanium. Combined with surface treatments like Gold Plating or Teflon Coating, we can meet specific requirements for high heat resistance, corrosion resistance, or non-magnetic insulation.
Yes. Our engineering team supports Early Supplier Involvement (ESI). You simply need to provide the working space, required force, and travel distance. We will calculate the spring rate, perform stress analysis, and recommend the optimal design for you.
Yes, we do. We have a dedicated sample team that provides rapid prototyping services (typically 3-5 days) for small batches. This helps you validate your design quickly and cost-effectively.
For high-precision robotic components, we can control load tolerance to within ±5% or even ±3% through 100% inspection. This ensures batch consistency and minimizes your calibration costs.