Coil Forming-Precision Spring

Precision Hardware

Forging industrial backbone with micron precision, LH Hardware delivers end-to-end solutions for global advanced manufacturing – from precision springs, custom springs to stamping, shafts, and linear motion systems

Precision Springs

High-precision springs manufactured via CNC coiling or cold forging, featuring tight tolerances (±0.003mm) and superior fatigue resistance, ideal for automotive suspension and precision instrumentation requiring consistent load-bearing performance.

Special Springs

Custom-engineered springs for extreme conditions, such as high-temperature (up to 300°C) or corrosive environments (titanium/hastelloy), used in aerospace hydraulics and nuclear reactor dampers

Wire Forming

Multi-station cold heading process forming wire (Φ0.1-3mm) into precision parts (connectors, snaps) with ±0.02mm tolerance, serving 5G infrastructure and smart home applications

Precision Stamping

Micron-level stamping (Ra≤0.4μm) of 0.05-3.5mm metal sheets via progressive dies, producing EMI shields and battery contacts for semiconductor and EV battery modules

Precision Shafts

Ultra-precision ground shafts (Ra≤0.2μm) with ±0.002mm diameter tolerance, employed in robotic joints and CNC spindles for ±0.005mm repeatability

Why Choose US?

✔

Custom Solutions Tailored to your exact load, space, and environmental needs

✔

ISO 9001 Certified Rigorous quality control at every stage

✔

Rapid Prototyping Tested samples available in 5-7 days

✔

Global Supply Chain Reliable delivery across North America, Europe & Asia

Contact US

E-mail: sales@lihongsprings.com

Mobile: +86 176 6501 0974

WhatsApp: +86 150 1844 0213

FAX: +86 0769-8532 4238

Add: Room 101, Building 1, No. 446 Yanglang Road, Dalingshan, Dongguan, Guangdong, China

Key Advantages

High Precision

CNC control achieves ±0.01mm coil spacing accuracy.

Complex Structures

Produces tapered, variable-pitch and multi-layer coils.

Material Versatility

Compatible with specialty wires like shape-memory alloys.

High Efficiency

50-200 coils per minute production speed.

Surface Integrity

Non-cutting process preserves wire properties.

How They Work

Wire feeds through guides onto mandrel, with CNC-controlled rollers forming helical structures according to programmed parameters.

Key Characteristics

✔️

Diameter Range - Standard 0.1-20mm, up to 50mm with special equipment

✔️

Pitch Control - Minimum pitch 0.8x wire diameter

✔️

Concentricity - ≤0.02mm radial runout on premium machines

Key Design Factors

✔️

Springback Compensation – 0.5-3% overwind based on material modulus

✔️

Winding Tension – Maintain 5-15% of wire's tensile strength

✔️

Mandrel Design – 0.1-1° taper for release, HRC60+ surface hardness

Manufacturing Process

Wire Prep

Select straightened wire of required diameter/material.

Straightening

Multi-roller system achieves ≤0.1mm/m straightness.

Feeding

Servo-controlled with ±0.005mm accuracy.

Primary Winding

CNC rollers create basic helix.

Pitch Forming

Spacing wheels regulate coil separation.

End Forming

Laser cutting/mechanical clamping finishes ends.

Annealing

300-500℃ stress relief in controlled atmosphere.

Inspection

100% automated optical dimension check.

Why Choose US?

Contact US

What is Coil Forming？

Stainless Steel Spiral

Stainless Steel Spiral

Read more

Brass Spiral Spring Customized

Brass Spiral Spring Customized

Read more

Free Plated Contact Spring

Free Plated Contact Spring

Read more

Coil Forming

Key Advantages

High Precision

Complex Structures

Material Versatility

High Efficiency

Surface Integrity

How They Work

Key Characteristics

Key Design Factors

Manufacturing Process

Wire Prep

Straightening

Feeding

Primary Winding

Pitch Forming

End Forming

Annealing

Inspection

Online message

Online message

Contact us

PRECISION SHAFTS

PRECISION STAMPING

WIRE FORMING

SPRINGS

News

About us