Products

Selma provides proactive noise and vibration control solutions to meet customer needs,
based on extensive technical expertise accumulated over many years in the field.
Vibration Reduction Products

RAM

‌Rubber-combined Air Mount
Product Application
  • Equipment requiring high vibration isolation efficiency and low natural frequency vibration isolation performance
  • Equipment and sites requiring ultra-precision micro-vibration control, such as in semiconductors and displays
  • Various inspection equipment, laser-related equipment, 3D measuring devices, and other precision measuring instruments
Product Features
  • Provides high-level vibration isolation performance in both vertical and horizontal directions
  • Dual chamber system enables effective vibration reduction and shorter settling time
  • Connects air chamber and damping chamber with an adjustable orifice
  • Uses a high-precision leveler with high repeat accuracy
  • Optional built-in oil damper available
Product Performance
  • Vibration Isolation Method: Air Spring + Anti-Vibration Rubber
  • Natural Frequency: 2.5 ~ 3.0 Hz
  • Displacement Repeat Accuracy: ±0.05 mm ~ ±0.10 mm
  • Adjustable Damping Ratio: 5 ~ 10% (settling time adjustable with additional option)
  • Vibration Reduction Performance in 10 Hz Range: 80 ~ 90%

Product Specifications

Model External Dimensions L×W×H (mm) Mounting Distance D (mm) Assembly Part ØC Product Capacity (kg/EA) Product Weight (kg)
RAM-0.1
180×180×170
□-160×160
Ø10
100
10
RAM-0.3
200×200×170
□-180×180
Ø10
300
13
RAM-0.6
240×240×170
□-210×210
Ø10
600
21
RAM-0.9
270×270×190
□-240×240
Ø14
900
35
RAM-1.2
290×290×190
□-260×260
Ø14
1200
44
RAM-1.5
320×320×190
□-290×290
Ø14
1500
50
RAM-2.0
370×370×190
□-340×340
Ø18
2000
54
RAM-2.5
390×390×190
□-360×360
Ø18
2500
64
RAM-3.0
440×440×190
□-410×410
Ø18
3000
80
Accessories
Regulator - 1 piece, Air Tube Ø6 - 5m, Tube Fitting (T) - 3 pieces
Custom manufacturing is available according to customer specifications beyond standard specifications,
and specifications are subject to change due to performance improvements.
Applying the H.S.S (High Speed Supply System) can improve equipment stabilization speed.

Product Performance Graph

Vibration Transmission Rate
List