Mechanical Wire Springs

Coiled spring products in a variety of cross sections and forms. Coil springs offer increased travel, and with lower loads.

Our mechanical springs are manufactured to the highest quality and designed within proper stress levels and manufacturing tolerances.

Mechanical Spring Types

Compression Springs

Compression spring squeezes together to create a load.

Extension Springs

 
Extension spring stretches apart to create load.

Torsion Springs

Torsion spring rotates around an axis to create load

Conical Springs

Cone shaped compression sping to provide near constant spring rates and  more travel

Compression Springs

Compression Springs

Music Wire

Compression Springs

Stainless Steel

Compression Spring Music Wire

PRODUCT SPECIFICATIONS

VCIM part numbers   

(Spring made to Imperial standard)

MATERIALS

Music wire:  ASTM A228 or AMS 5112

TOLERANCES       

Outside Diameter

1.45 to 3.02mm ±0.08mm

3.05 to 6.10mm ±0.13mm

6.12 to 12.70mm ±0.20mm

12.73 to 25.40mm ±0.38mm

25.43 to 31.12mm ±0.51mm

31.14 to 37.08mm ±0.76mm

37.11 to 50.08mm ±1.02mm

Load P ±10%

Spring Rate R ±10%

ENDS                        

Outside diameter 1.45/2.24 – squared and unground.

Outside diameter >2.24 – squared and ground.

SURFACE FINISH  

Music wire – oiled.

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VCMM part numbers

(Spring made to Metric Standard)

MATERIALS           

Music wire: DIN 17223 or JIS G4314 SWP-A/B or AMS 5112

All dimensions and forces to DIN 2095 (Grade 2)

ENDS                        

Wire up to 0.8mm, squared and unground.

Wire over 1.0mm, squared and ground.

ADDITIONAL TECHNICAL DATA

Music wire is not recommended for applications where temperature exceeds 121°C (250°F)

LOADS

Load values shown are based on a service life of 50,000 cycles at 0.50 stress range.

For normal service, springs should not be compressed below L1.

To determine the load at any working length use rate proposed deflection. P=(L-Lx) x R where Lx is the new load height.

1 lb = 4.448 Newtons

1 Newton = 0.225 lb

Please contact our Engineer Team for more Technical assistance and advise.

Compression Spring Stainless Steel

PRODUCT SPECIFICATIONS

VCIS part numbers

(Spring made to Imperial standard)

 MATERIALS         

STAINLESS STEEL / INOX: Type 302 as per ASTM A313 or AMS 5688 spring temper

TOLERANCES      

Outside Diameter

1.45 to 3.02mm ±0.08mm

3.05 to 6.10mm ±0.13mm

6.12 to 12.70mm ±0.20mm

12.73 to 25.40mm ±0.38mm

25.43 to 31.12mm ±0.51mm

31.14 to 37.08mm ±0.76mm

37.11 to 50.08mm ±1.02mm

Load P ±10%

Spring Rate R ±10%

ENDS                                   

Outside diameter 1.45/2.24 – squared and unground.

Outside diameter >2.24 – squared and ground.

SURFACE FINISH          

STAINLESS STEEL / INOX – plain wire.

Shot-peened and plated finishes supplied on request.

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VCMS part numbers

(Spring made to Metric Standard)

 MATERIALS         

STAINLESS STEEL / INOX: Type 301, 302 or 304 as per DIN 17224 or JIS G4314 SUS 302/304 or AMS 5688 spring temper

All dimensions and forces to DIN 2095 (Grade 2)

ENDS                                   

Wire up to 0.8mm, squared and unground.

Wire over 1.0mm, squared and ground.

ADDITIONAL TECHNICAL DATA

STAINLESS STEEL / INOX is not recommended for applications where temperature exceeds 260°C (500°F) STAINLESS STEEL / INOX is slightly magnetic due to cold working during manufacturing. STAINLESS STEEL / INOX springs may have a slight residue of nickel on the surface of the wire; this is normal and will not affect the function.

LOADS

Load values shown are based on a service life of 50,000 cycles at 0.50 stress range.

For normal service, springs should not be compressed below L1.

To determine the load at any working length use rate proposed deflection. P=(L-Lx) x R where Lx is the new load height.

1 lb = 4.448 Newtons

1 Newton = 0.225 lb

Please contact our Engineer Team for more Technical assistance and advise.

Extension Springs

Extension Springs

Music Wire

Extension Springs

Stainless Steel

Extension Spring Music Wire

PRODUCT SPECIFICATIONS

MATERIALS

VEIM part numbers

Music wire: ASTM A228 or AMS 5112

Stainless steel: Type 302 as per ASTM A313or AMS 5688 spring temper (Chemical and Physical only)

TOLERANCES

VEIM part numbers

Outside Diameter

1.45 to 3.02mm ± 0.08mm

3.05 to 6.10mm ± 0.13mm

6.12 to 12.70mm ± 0.20mm

12.73 to 25.40mm ± 0.38mm

25.43 to 31.12mm +/-0.51mm

31.14 to 37.08mm +/-0.76mm

37.11 to 50.08mm +/-1.02mm

Load P +/- 10%

Spring Rate R +/- 10%

ENDS

German style closed loop. End position may vary. Special ends are available on request.

LOADS

Initial tension T is for reference only and will vary. To determine the load at any working length use the formula:

P = (rate x deflection) + Initial Tension

1lb = 4.448 Newtons

1 Newton = 0.225 lb

SURFACE FINISH

Music wire – oiled.

Stainless steel – plain wire.

Shot-peened and plated finishes supplied on request.

For custom made springs, or special materials, please contact our Engineer Team for more Technical assistance and advise.

Extension Spring Stainless Steel

PRODUCT SPECIFICATIONS

MATERIALS 

VEMM part numbers

Music wire: DIN 17223 or JIS G4314 A313 SWP-A/B or AMS 5112 Stainless steel: Type 301, 302 or 304 as per DIN 17224 or JIS G4314 SUS 302/304 or AMS 5688 spring temper (chemical and physical only)

TOLERANCES

VEMM part numbers

All dimension and forces to DIN 2097 (Grade 2)

ADDITIONAL TECHNICAL DATA

All SPEC extension springs have uniform body diameter and are produced with full twist loops the same diameter as the body. They are wound with initial tension, therefore some force is required before the coils are initially separated.

ENDS

German style closed loop. End position may vary. Special ends are available on request.

LOADS

Initial tension T is for reference only and will vary. To determine the load at any working length use the formula:

P = (rate x deflection) + Initial Tension

1lb = 4.448 Newtons

1 Newton = 0.225 lb

SURFACE FINISH

Music wire – oiled.

Stainless steel – plain wire.

Shot-peened and plated finishes supplied on request.

For custom made springs, or special materials, please contact our Engineer Team for more Technical assistance and advise.

Torsion Springs

Stainless Steel , Music Wire

Torsion Spring ( Stainless Steel , Music Wire)

PRODUCT SPECIFICATIONS

TORSION SPRINGS

Torsion spring is useful to store and release energy of rotation or to maintain pressure over a short distance. Our selection includes stainless steel torsion springs with four end positions, and music wire springs with three end positions.

MATERIALS

Stainless steel: Type 302 as per ASTM A313 or AMS 5688

spring temper

Music wire: ASTM-A228 or AMS 5112

DIRECTION OF HELIX

Must be specified by adding a suffix to the catalogue number. Use L for left-hand wound or R for right-hand wound.

L R

TOLERANCES

Outer diameter ± 5% stainless steel

± 2% music wire

ADDITIONAL TECHNICAL DATA

Normally used over a supporting mandrel or arbor. Suggested mandrel sizes allow about 10% clearance at the deflections listed. If greater deflections are used, the arbor size should be reduced.  Sufficient room (minimum axial space) must be provided in the assembly for the spring to function properly. 

Should be used in the direction that winds the coils. In the unwinding direction the maximum load is lower because of residual stresses.  Torque values listed are suitable for average conditions. 

These values can be increased about 20% for static conditions with only slight setting.

To determine the load at any working length use rate proposed deflection.

ENDS

Straight torsion ends are standard.

FINISH

Plain finish is standard. Allow additional time for special finishes.

For inspection purposes, the load should be applied at 1/2 leg length (E). Using other lengths appreciably alters the active length of wire and affects the test results.  The reference torque values listed can be translated to the approximate direct load by use of the formula P=T/En where P is the load applied at the new length En.  Torque values at intermediate deflections can be calculated proportionally.

For custom made springs, or special materials, please contact our Engineer Team for more Technical assistance and advise.

Conical Springs

Stainless Steel

Conical Spring ( Stainless Steel)

PRODUCT SPECIFICATIONS

CONICAL SPRINGS

Cone shaped compression springs designed to provide a near constant spring rate and a solid height lower than a normal spring. Each spring features a variable pitch to achieve the constant spring rate and coils which nest during deflection to provide a solid height of approximately equal to two wire diameters.

All springs are manufactured from stainless steel for use in a multitude of environments.

MATERIALS

Stainless steel: Type 302 as per ASTM A313 or AMS 5688

spring temper

FINISH

Standard finish is passivated to ASTM A967.

DIRECTION OF HELIX

Right hand.

ENDS

Squared ends not ground.

SPRING RATE

The spring rate is linear due to the variable pitch.

SOLID HEIGHT

Due to coil nesting, the solid height is approximately equal to two wire diameters.