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Eligo

ELIGO SPRING

Feature

The Eligo spring is composed of a coil spring and rubber on which the coil spring is rolled in the spiral shape. The coil spring receives a part of the Eligo load and at the same time, it prevents the spring from being bent left and being pushed out in the direction of the rubber strength, On the other hand, the rubber receives a part of the load in the form of standing big displacement, and at the same time, it plays a role of damper because of the internal friction,

Eligo, compared with the metal coil spring, has the following features:
  • A vulcanized rubber with big internal friction, it is used for coating metal coil springs so it reduces amplification of resonance. In addition, it prevents the sierging effect that is made from the coil spring. Especially, a vulcanized rubber absorbs vibration caused by interaction among molecules and molecular layers so it is suitable for absorbing vibration of high frequency
  • The load-displacement relationship makes nonlinear spring features through the elasticity theory of rubber and configural effects so even though the accumulated load changes, the vibration number of the spring system is almost fixed.
  • The outside of the coil spring is coated with rubber so it has corrosion -resistance for coil spring and dust-resistance for the devices in it so it can be used for long.
  • The coil spring, which is used in cold areas, gets to lose its spring functions in case the spring is fixed by snow, but Eligo is suitable for cold areas without adhesion of springs by snow.
  • When using a rubber for eligo, high temperature, oil, creep, and others should be considered for selection of the material
Usage

For anti-dust rubber springs, springs for railroads, bolster type spring, supporting spring for vibrating compressor, supporting spring, anti-dust spring for engine and compressor,

Specification
Records of Specification in Ordering Eligo Spring
Classification Special Requirements Remarks
Rubber material
in use		 Choose the material based on the manufacturer's
standards unless specified otherwise
Outer diameter of
Eligo spring (Ro)		 mm
Inner diameter of
Eligo spring (Ri)		 mm
Height of
Eligo spring(Rh)		 mm
Linear diameter of
coil spring (d)		 mm * The manufacturer can voluntarily change the specifications
for the coil spring, considering the features of the spring.
* The manufacture can randomly choose the material of
the coil spring, considering the features of the spring
Central diameter of
coil spring		 mm
Free height of coi
spring(Fh)		 mm
Total no. of coil
spring turns (Nt)		 Vol
Thickness of sheet
plate (t)		 mm
Size of
sheet plate(ab)		 *mm
Other special
specifications		 Record of Use
Condition		 Indicate use, conditions for use, and environment for use.


Comparison of Domestic Ordinary Rubber Materials
Chemical
Name 		Interna
tional
Symbol		 Official
Name 		Density
(g/㎤)		 Tensile
Strength
(kg/㎟)		 Elonga
tion
Ratio
(%)		 Har
dness
(IRHD)		 Tempera
ture of
Use (℃)		 Oil
Resis
tance
Polyisoprene NK Polyisoprene 0.95 0.51-2.86 1000 30-98 -50 ~ 140 Bad
Styrene SBR Polystyrene
rubber 		0.92 0.51-2.45 700 40-95 -50 ~ 140 Bad
Butadiene
copolymer		 NBR Acrylonitrile
Butadiene
rubber 		0.98 0.51-2.45 800 40-95 -50 ~ 140 Good
Butadiene
copolymer		 CR Polyisoprene 1.23 0.51-2.75 800 40-95 -50 ~ 140 Very good
Isoprene
Isobutylene
rubber 		IIR Isobutylene -
Isoprene
rubber 		0.93 0.41-1.73 900 40-90 -50 ~ 150 Bad
Polyxylon SI Silicon
rubber 		1.19 0.20-1.02 500 40-90 -100 ~ 200 Very good
Polyurethane - Polyurethane 1.26 2.04-32.62 600 65-95 -30 ~ 80 Good