特許機器株式会社 特許機器株式会社

VIBRATION ISOLATION DEVICEDesk Type Vibration Isolation Table
EHS / DHS / DAS / SRD / SVD

Manufacturing, inspection, and measurement in the ultra-precision processing fields, which includes the semiconductor industry, are becoming increasingly precise to the level of nanometers and angstroms. Our series of OS float desks accurately captures the needs of these times and provides an isolation space for ultra-fine vibration.
We boast a rich lineup able to accommodate the weight and size of the inspection equipment used with semiconductors and liquid crystal substrates.
A simple design made to accommodate the production inspection line.
It features a beautifully configured system with a number of options.

EHS / DHS Specification

Desk Type Vibration Isolation Table EHS

High-performance vibration isolation desk for ultra-precision inspection/measurement equipment

EHS-68 (with lower shelf)

Model EHS-68 EHS-78 EHS-87 EHS-107
External dimensions of vibration isolation table 600×800
×750
700×800
×750
800×700
×750
1,000×700
×750
Weight (kg) 170 190 190 220
Loading weight limit (kg) 120
Vibration isolation method Air spring and swing ball support system (PAT .P/USP)
Natural frequency (Hz) Vertical direction 1.6 to 2.2 Horizontal direction 1.2 to 1.8
Leveling Automatic leveling system with mechanical valve: Supplied pressure: 0.4Mpa
Float SUS304 polished finish
Options Work cover, earthquake-resistant fixing bracket, lower shelf
Other Can be used in a cleanroom (with centralized exhaust mechanism and anti-static ground functionality)
RoHS compliant

Desk Type Vibration Isolation Table DHS

The DHS series is a model with a work cover set on the EHS series.You can work without worrying about touching the float.

DHS-68(with lower shelf)

Model DHS-68 DHS-78 DHS-87 DHS-107
External dimensions of vibration isolation table
(W x D x Hmm)
650×850
×750
750×850
×750
850×750
×750
1,050×750
×750
Weight (kg) 175 195 195 225
Loading weight limit (kg) 120
Vibration isolation method Air spring and swing ball support system (PAT .P/USP)
Natural frequency (Hz) Vertical direction 1.6 to 2.2 Horizontal direction 1.2 to 1.8
Leveling Automatic leveling system with mechanical valve: Supplied pressure: 0.4Mpa
Float SUS304 polished finish
Options Seismic fixing bracket, lower shelf
Other Can be used in a cleanroom (with centralized exhaust mechanism and anti-static ground functionality)
RoHS compliant

EHS / DHS Feature

  • Vibration transmission characteristics: Stable vibration transmission characteristics that suppress the generation of modes up to 100Hz, despite low eigenvalues.
  • Uses an "SBM mechanism" (PAT.P/USP) as the horizontal direction isolator. Achieved low eigenvalues horizontally. It is now possible to keep the horizontal natural frequency constant regardless of the weight of the mounted equipment.
  • We have commercialized a new type of air spring, the swing ball (SBM) mechanism, which is a unique vibration isolation technology cultivated from our active vibration isolation. By adopting this SBM mechanism, we are now able to suppress the rolling mode, which was difficult with conventional air springs. In addition to the optimally designed gantry unit, it is now possible to reliably isolate vibrations over a wide range of frequencies and maximize the performance of the onboard equipment.

New type air spring

DAS / SRD / SVD Specification

Desk Type Vibration Isolation Table DAS

Supports large loads such as optical microscopes/roughness meters

DAS-68 (with lower shelf)

Model DAS-68 DAS-78 DAS-87 DAS-107
External dimensions of vibration isolation table
(W x D x Hmm)
650×850
×750
750×850
×750
850×750
×750
1,050×750
×750
Weight (kg) 180 200 200 230
Loading weight limit (kg) 200
Vibration isolation method Air spring
Natural frequency (Hz) Vertical and horizontal 2.0 to 3.0
Leveling Automatic leveling system with mechanical valve: Supplied pressure: 0.4Mpa
Float SUS304 polished finish
Options Seismic fixing bracket, lower shelf
Other Can be used in a cleanroom (with centralized exhaust mechanism and anti-static ground functionality)
RoHS compliant

Desk Type Vibration Isolation Table SRD / SVD

Cleanly equipped with measurement microscope/roughness meter, etc.

SVDA(ウイング、サイドデス
ク(ED)、モニター台、マウ
ス/キーボード台付き)

Model SRDA SVDA SRDC SVDC SRDR
External dimensions of vibration isolation table
(W x D x Hmm)
590×720
×715
770×720
×715
590×720
×715
770×720
×715
590×720
×715
Weight (kg) 70 105 70 105 70
Loading weight limit (kg) 120 200 120 200 45
Vibration isolation method Air spring Special rubber spring pad
Natural frequency (Hz) Vertical and horizontal 2.0 to 3.0 Vertical and horizontal 8.0 to 12.0
Leveling Automatic leveling system with mechanical valve: Supplied pressure: 0.4Mpa Manual adjustment of hand pump supply Special rubber spring pad
Float SPCC (melamine resin coating)
Options Side wing, side desk (ED) ED, monitor stand, mouse/keyboard stand

Regarding the use of desk type vibration isolation tables: If the height of the center of gravity of the mounted device exceeds half the length of the shorter side of the isolator table, please contact us.

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