Email: info@snmhardware.com Phone: 0086 18965075392
COMPRESSION SPRINGS
- Round, Rectangular, Square & Special-Section Wire
- Conical, Taper, Regular Round ,Wave Shape
- Spring Steel,Carbon Steel, Stainless and More Materials
- Open and Square, Close and Square, Close and Ground ends type
Spring Manufacturing Specifications
While we have listed some of types of spring and material, SNM Hardware provides completely customized production of all springs and wire forms.
- Large Volume Orders, Short Runs & Prototypes – formed, assembled and packaged to meet your requirements.
- Automatic testing equipment for Superior Quality – The probe automatically detects dimensional deviations and distinguishes defective products.
- Tech Centers – in manufacturing facilities you can work with our team and equipment to optimize designs and lower costs.
- Engineering Support – our team can provide expert design assistance.
Shapes & Sizes
- Round Wire
- Rectangular Wire
- Square Wire
- Special Section Wire
Body Types
- Open-coiled compression springs
- Helical shaped compression springs
- Compression springs usually coiled with a constant diameter, though they can be produced with variable diameters and in hourglass, cone and barrel shapes.
Common Materials
- Spring Steel
- High/Low Carbon Steel
- Pre-plated Steel
- Stainless Steel
- Alloy
- Cold Drawn Wire
- Oil quenched steel wire
Design of Compression Springs
Critical design variables encompass free/installed height tolerance, operational deflection range, bore-shaft clearance specifications, static/dynamic load parameters, environmental exposure factors (temperature, corrosion, vibration), and fatigue life validation via FEA simulation. SNM’s engineering team conducts rigorous DFM analysis, optimizing wire diameter selection, active coil configuration, and stress distribution patterns.We implement material certification and performance testing protocols in accordance with international standards to provide cost-optimized spring solutions.
Compression Springs Parameters
Compression Springs Ends
Compression Spring Formulas For Dimension Characteristics
| Spring Characteristic | Open | Open & Ground | Closed | Closed & Ground |
| Pitch (p) | L – d ____ na | L ____ na | L – 3d ____ na | L – 2d ____ na |
| Solid Height (H) | d(N1 + 1) | d x N1 | d(N1 + 1) | d x N1 |
| Total Coils (N1) | na | na + 1 | na + 2 | na + 2 |
| Free Length (L) | (p x na) + d | p x na | (p x na) + 3d | (p x na) + 2d |
| d = Diameter of Round Wire (in. or mm.) L = Free Length N1 = Number of Coils | Na = Number of Active Coils p = Pitch | |||
Here are just a small selection of the compression spring shapes we have produced, including:
- Anti-Vibration Spring
- Auger Spring
- Barrel Shaped Compression Spring
- Ends Closed & Ground
- Ends Closed & Not Ground
- Ends Open & Not Ground
- Ends Open & Ground
- Compression Spring with Tapered Ends
- Concave Compression Spring
- Conical Compression Spring
- Constant Coil Compression Spring
- Die Spring
- Handle Spring
- Hose Guard Spring
- Hourglass Shaped Compression Spring
- Hourglass Shaped Compression Spring with Straight Leg
- Magazine Spring
- Valve Spring
