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
Conical
Springs
Compression Springs
Compression Spring Music Wire
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
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 Spring Music Wire
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
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.
Torsion Spring ( Stainless Steel , Music Wire)
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 Spring ( Stainless Steel)
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.
