In precision automation and robotics, every motion counts.
That’s where YF Gear’s Helical Gear Racks stand out — engineered with angled teeth that engage gradually for quiet operation, smoother motion, and higher load capacity.
Our helical racks are ideal for high-speed linear drives, servo motion axes, and robotic gantries, where stability, noise reduction, and longevity are critical.
By combining optimized helix geometry (typically 15°–30°), controlled heat treatment, and micron-level straightness, we deliver racks that redefine performance in linear power transmission.
Ultra-Smooth Engagement — gradual meshing minimizes vibration and noise.
High Load Carrying Capacity — larger contact area increases tooth strength.
Silent Operation (<60 dB) — perfect for high-speed automation lines and clean environments.
Reduced Wear & Longer Life — hardened alloy steels ensure resistance to fatigue.
Superior Positional Accuracy — DIN 6–7 precision with ground flank geometry.
Customizable Helix Angles — tailored for your torque and speed requirements.
| Specification | Range / Option | Remarks |
|---|---|---|
| Module (M) | 0.5 – 8 | Compatible with helical pinions |
| Helix Angle | 15° – 30° | Optimized for quiet, stable meshing |
| Material | Alloy Steel (20CrMnTi), Stainless Steel (304/316), Carbon Steel | Strength & corrosion resistance |
| Hardness | 45 – 58 HRC | Induction or carburized surface |
| Length | 0.5 – 2 m (extendable) | Seamless rack-to-rack connection |
| Precision | DIN 6 / JIS Grade 1 | Tight tolerance & low backlash |
| Surface Finish | Black Oxide, Zinc-plated, Chrome, Polished | Enhanced appearance & protection |
| Mounting Holes | Optional | For parallel alignment or modular joining |
Helical racks are designed for motion precision and acoustic comfort — outperforming standard spur racks in noise and smoothness.
Common Industries & Applications:
Robotics & Automation: Linear actuators, pick-and-place arms, gantry axes.
CNC & Machine Tools: Servo-driven positioning systems and gantry drives.
Packaging Machinery: Fast and silent reciprocating motion.
Medical & Laboratory Equipment: Cleanroom-compatible, low-noise movement.
Elevator & Lifting Systems: Heavy-duty, smooth torque transmission.
| Feature | Helical Gear Rack | Spur Gear Rack |
|---|---|---|
| Tooth Orientation | Angled (15°–30°) | Straight |
| Contact Area | Wider – Multiple teeth engaged | Single line contact |
| Smoothness | Excellent – Gradual meshing | Moderate – Instant contact |
| Noise Level | Very Low | Moderate – Higher at high speed |
| Axial Force | Generated – Requires thrust compensation | None |
| Load Capacity | Higher (per tooth) | High – limited by single contact |
| Best Use | High-speed, quiet, heavy-load systems | General-purpose drives |
| Cost | Slightly higher | Lower |
Insight:
Helical racks are the engineer’s choice for servo precision, continuous operation, and low-vibration environments, where accuracy and silence define quality.
Each degree of helix angle improves surface contact and energy transfer:
15°–20° → Ideal for moderate speed and strength balance.
25°–30° → Best for ultra-quiet, high-speed drives.
Our engineers optimize the tooth geometry using 3D CAD and FEM simulation to ensure uniform load distribution and minimal friction.
This translates to longer service life, less lubrication demand, and smoother torque response.
YF Gear’s proprietary process includes:
CNC rack milling with profile accuracy within ±0.01 mm
Gear grinding for precise pitch alignment
Carburizing or nitriding for hardness up to 58 HRC
Straightness correction and noise-level testing
Anti-corrosion finishing and packaging for shipment
We maintain full material traceability and provide metallurgical test reports on request.
| What Customers Ask | Our Engineering Response |
|---|---|
| “Can you minimize system noise in automation lines?” | Yes – our optimized helix design and ground tooth profile reduce vibration up to 40%. |
| “How do you guarantee accuracy on long racks?” | Laser alignment & segment-to-segment pitch control within ±0.02 mm. |
| “What about maintenance?” | Long re-lubrication cycles due to smoother contact. |
| “Can you match pinion gears?” | Yes – we manufacture complete helical rack + pinion sets. |
| “Do you supply corrosion-resistant racks for outdoor or marine use?” | Stainless-steel versions available with anti-rust coating. |
Q1. Why choose a helical rack instead of a spur rack?
Helical racks provide smoother motion, higher load capacity, and quieter performance — ideal for high-speed automation or robotics.
Q2. How do you prevent axial thrust from damaging bearings?
We recommend using paired racks in opposite helix directions or thrust bearings to neutralize axial load.
Q3. Can you produce extra-long helical racks?
Yes – modular connection ensures precision alignment for racks over 2 m in length.
Q4. Are your helical racks compatible with standard gears?
Yes – all racks comply with DIN 3962 and standard module sizes.
Q5. What’s the typical lead time?
Prototype 7–10 days; bulk production 15–25 days depending on hardness and coating.
Q6. Can you provide 3D models for design integration?
Absolutely – STEP / IGES files are available for CAD design teams.
ISO 9001:2015 Quality Certified
DIN 6 / 7 Precision Standard Compliant
RoHS / REACH Compliant Materials
Material and Hardness Reports Available
Looking for a low-noise, high-performance helical gear rack for your automation or CNC system?
Upload your technical drawings or specify module, helix angle, and material — our engineers will prepare a custom quotation within 24 hours.
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Tailored Design | Fast Lead Time | OEM & ODM Support | Global Shipping
