Page 1526 - MiSUMi 2025

Economy series Product Overview
Anti-Vibration Rubber Mounts

QExample of Customer Use
· Suitable for the prevention and weakening of vibration phenomena generated by vibrating equipment. For
example, anti-vibration rubber mount is often used to prevent the impact of external vibration factors on
precision equipment

Compression Shear Inclined
Support Support Support

QSelection Method

22 QSTEP 1
Anti-Vibration Rubber Mounts / Trims / Polyurethane Sheets Determine spring constant

· Assuming that the equipment is now vibrating in
the vertical direction under force, The formula for
the transmissibility Tr is as follows:
U: Vibration ratio
f
f: Vibration number of the machine itself (Hz)
Anti-Vibration Rubber Mounts U= fn F fn: The number of inherent vibrations during
machine damping (Hz)
F: Exciting force transmitted by
1
the machine to the base (N)
P.22-004 Tr= FO = 1-U 2 Fo: Exciting force of the machine Example
itself (N)
· Tr is the transmissibility, and the vibration damping effect is · The weight m of the vibration-damping
Trims available only when the transmissibility is < 1, that is U > √2 machinery required by the customer is 100kg,
* When U=2~4, that is, when the transmissibility is 7%~33%,
the vibration damping effect is the best the number of vibrations f occurring in the
P.22-012 · The Anti-Vibration Rubber Mounts can be selected machinery is 16Hz, and fn is 8Hz
Calculate according to the formula
by calculating the appropriate spring constant Ks
Urethane Washers / Bumpers / Polyurethane Sheets according to the following formula ks= (2π×16) ×100 =180(N/mm)
2
m: Machine mass (kg)
2 ×1.4×1000
2
(2πf) m
2
natural rubber is 60,
2
P.22-013 ks= U ×α×1000 α: When the Shore hardness of The spring constant of 180N/mm is obtained.
α is 1.4
* The above formula requires confirmation of the weight m of the
equipment above the anti-vibration rubber mount, the vibration
number f of the machine itself and the desired vibration number
fn (after vibration damping).
· Depending on how the equipment is mounted,
QSTEP 2 two external threads are required.
Selected C-VV Series
Select the appropriate installation type
of Anti-Vibration Rubber Mounts Required thread specification M6,
QSTEP 3 height 20mm
Select the appropriate size of
Anti-Vibration Rubber Mounts
Selected model: C-VV2520-18
Q Model Selection
22-005