Automotive Stamping Die Trim Steel Inserts

Die Springs & Nitrogen Gas Springs

Stamping dies rely on springs and gas springs to provide stripping pressure, blank holder force, and pressure pad actuation. Hebei Haoxinran Machinery supplies replacement die springs and nitrogen gas springs to keep stamping dies operating at peak performance.

Die Spring Types

We provide various spring types for different die functions:

• Rectangular Die Springs: Standard coil springs with rectangular cross-section, color-coded by load capacity. Available in light (blue), medium (red), heavy (green), and extra heavy (gold) load ratings.

• Round Wire Springs: Standard compression springs for lighter-duty applications.

• Nitrogen Gas Springs: Sealed gas-filled cylinders that provide consistent force over a wide compression range. Much more compact than mechanical springs for equivalent force.

• Urethane Springs: Urethane compression pads that are quiet, non-marking, and corrosion resistant.

When to Replace Springs

Die springs fatigue over time and lose force. Replace springs when:

• Stripping force decreases and parts start lifting with the punch

• Spring height shortens or shows signs of permanent set

• Uneven stripping causes part distortion or burr issues

• Springs crack, tilt, or show visible damage

• Scheduled maintenance based on cycle count

Nitrogen Gas Spring Advantages

Gas springs offer benefits over mechanical springs in many die applications:

• Constant Force: Force stays nearly constant throughout the stroke, unlike mechanical springs whose force increases with compression.

• Compact Size: High force in a small package—critical in dies with limited space.

• Adjustable Pressure: Force can be adjusted by changing gas pressure.

• Longer Life: Properly maintained gas springs last longer than mechanical springs in high-cycle applications.

• Manifold Systems: Multiple gas springs can be plumbed together for synchronized pressure distribution.

Gas Spring Maintenance

For nitrogen gas springs, we recommend:

• Periodic pressure checks and recharging as needed

• Piston rod cleaning and inspection for damage

• Seal replacement when pressure retention declines

• Proper mounting to prevent side loading on the piston rod

• Safety precautions when charging high-pressure gas systems

Haoxinran supplies replacement springs and gas springs for stamping dies. We can match your existing spring specifications or help select the right spring for new die design requirements.