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NewDamp™ Constant Natural Frequency Elastomeric Isolators

NewDamp™ Constant Natural Frequency Elastomeric Isolators

NewDamp™ Constant Natural Frequency Elastomeric Isolators

Product catalog summary
Overview: This document provides technical specifications and details for various NewDamp™ elastomeric isolators used in optical tables and vibration control systems. The isolators are designed to provide effective vibration isolation for different load capacities and applications.
1. ND01 Series:
- Load Capacity: Supports up to 250 lbs per isolator.
- Natural Frequency: Vertical frequency is constant at approximately 22 Hz for loads above 70 lbs; horizontal frequencies range from 5 to 7 Hz.
- Dimensions: Height of 1.36 inches and base dimensions of 2.5 x 1.5 inches.
- Compatibility: Suitable for breadboards and Microlock interfaces.
2. ND20 and ND30 Series:
- Design: Conical elastic elements providing equal isolation in vertical and horizontal directions.
- Load Capacity: ND20-A supports 45-250 lbs; ND30-A supports 70-300 lbs.
- Natural Frequency: ND20-A: Vertical 9-12 Hz, Horizontal 8-10 Hz; ND30-A: Vertical 10-15 Hz, Horizontal 9-12 Hz.
- Dimensions: Both models have a height of 3.28 inches and base dimensions of 4.5 x 4.5 inches.
3. ND40 and ND41 Series:
- Design: Cylindrical elements for applications requiring good isolation and short settling time.
- Load Capacity: ND40-A/B supports 100-450 lbs; ND41-A/B supports 70-225 lbs.
- Natural Frequency: Vertical 12-21 Hz, Horizontal 4-6 Hz for both series.
- Dimensions: ND40 has a height of 2.63 inches; ND41 has a height of 2.25 inches.
4. ND50 Series:
- Design: Conical elastic elements for low load applications.
- Load Capacity: Supports 17-28 lbs per isolator.
- Natural Frequency: Vertical frequency is less than 12 Hz; horizontal frequency ranges from 8 to 10 Hz.
- Dimensions: Height of 1.3 inches and base dimensions of 2.4 x 2.4 inches.
5. ND60 Series:
- Design: Similar to ND50, designed for very low load applications.
- Load Capacity: Supports 13-17 lbs per isolator.
- Natural Frequency: Both vertical and horizontal frequencies range from 9 to 13 Hz.
- Dimensions: Height of 1.3 inches and base dimensions of 2.4 x 2.4 inches.
Conclusion: The NewDamp™ series offers a range of isolators tailored for different load capacities and vibration isolation needs, ensuring compatibility with various optical and vibration control setups.
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Catalog excerpts

NewDamp™ Constant Natural Frequency Elastomeric Isolators  -1

O p t i c a l Ta b l e s a n d V i b r a t i o n C o n t r o l 1055 Email: [email protected] • Web: newport.com TECHNICAL REFERENCE OPTICAL TABLES HONEYCOMB, GRANITE AND RIGID STRUCTURES BREADBOARDS AND GRID PLATFORMS ISOLATORS WORKSTATIONS AND ISOLATED PLATFORMS STRUCTURAL RAILS AND CARRIERS TESTING, ANALYSIS AND DESIGN NewDamp™ Constant Natural Frequency Elastomeric Isolators ND01 Series ND01-A supports up to 250 lbs. and provides excellent CNF (constant natural frequency) characteristics: the vertical natural frequency is virtually constant at approximately 22 Hz for loads above 70 lbs. per isolator. This compact size isolator ensures excellent horizontal isolation with natural frequencies of 5 to 7 Hz and minimum resonance amplification. The typical isolation characteristics are shown. ND01-A 200 100 0 LOAD (lbs) 0 0.05 0.1 0.15 0.2 0.25 DEFLECTION (in.) 30 25 20 15 10 0 50 100 150 200 250 300 LOAD PER ISOLATOR (lb) FREQUENCY (Hz) 5 0 -5 -10 -15 -20 1 10 100 FREQUENCY (Hz) HORIZONTAL TRANSMISSIBILITY (dB) 5 0 -5 -10 -15 -20 1 10 100 FREQUENCY (Hz) VERTICAL TRANSMISSIBILITY (dB) Specifications Model (Metric) ND01-A (M-ND01-A) Load per Isolator [lb (kg)] 70 (30)–250 (115) Load Range (set of 4) [lb (kg)] 280 (120)–1000 (460) Natural Frequency (Hz) Vertical 21–22 Horizontal 5–7 Height, Isolator [in. (cm)] 1.36 (3.5) Base Dimension [in. (cm)] 2.5 x 1.5 (6.4 x 3.8) Interface Compatability Breadboard, Microlock Dimensions Model ND01-A 1.36 (34.59) A B A SECTION A-A 1.63 DIA (41.28) M6 X 1.0 CLR FOR M6 1.50 (38.10) 2.50 (63.50) A Dimensions [in. (mm)] Model (Metric) A B ND01-A (M-ND01-A) 2.00 (50.0) 1.00 (25.0)

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NewDamp™ Constant Natural Frequency Elastomeric Isolators  -2

Phone: 1-800-222-6440 • Fax: 1-949-253-1680 1056 O p t i c a l Ta b l e s a n d V i b r a t i o n C o n t r o l HONEYCOMB, GRANITE OPTICAL TABLES TECHNICAL REFERENCE AND RIGID STRUCTURES BREADBOARDS AND GRID PLATFORMS WORKSTATIONS AND ISOLATORS ISOLATED PLATFORMS STRUCTURAL RAILS AND CARRIERS TESTING, ANALYSIS AND DESIGN NewDamp™ ND20 and ND30 Series These isolators are based on conical elastic elements. They provide almost equal isolation in vertical and horizontal directions. Within the same design envelope, they provide stiffer, higher load (ND30-A); and softer, lower load (ND20-A) options....

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NewDamp™ Constant Natural Frequency Elastomeric Isolators  -3

O p t i c a l Ta b l e s a n d V i b r a t i o n C o n t r o l 1057 Email: [email protected] • Web: newport.com TECHNICAL REFERENCE OPTICAL TABLES HONEYCOMB, GRANITE AND RIGID STRUCTURES BREADBOARDS AND GRID PLATFORMS ISOLATORS WORKSTATIONS AND ISOLATED PLATFORMS STRUCTURAL RAILS AND CARRIERS TESTING, ANALYSIS AND DESIGN ND40 200 100 0 -100 -200 0.2 0.4 0.6 0.8 1 Time (s) Basis Motion (ìm) Other Elastomer 200 100 0 -100 -200 0.2 0.4 0.6 0.8 1 Time (s) Basis motion (ìm) Customized ND41 NewDamp™ Elastomeric Isolator. Custom machine isolators. Custom machinery feet offer high horizontal damping...

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NewDamp™ Constant Natural Frequency Elastomeric Isolators  -4

1058 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 O p t i c a l Ta b l e s a n d V i b r a t i o n C o n t r o l HONEYCOMB, GRANITE OPTICAL TABLES TECHNICAL REFERENCE AND RIGID STRUCTURES BREADBOARDS AND GRID PLATFORMS WORKSTATIONS AND ISOLATORS ISOLATED PLATFORMS STRUCTURAL RAILS AND CARRIERS TESTING, ANALYSIS AND DESIGN Dimensions Model ND40-A 3.0 (76.2) 3.0 (76.2) 2.48 (63.0) A A 2.63 (66.7) A CLEARANCE FOR M6 M6 X 1.0 A 2.48 (63.0) ø 2.75 (69.9) 2.50 (63.5) SECTION A-A Dimensions [in. (mm)] Model (Metric) A B ND40-A (M-ND40-A) 2.00 (50.0) 1.00 (25.0) ND40-B (M-ND40-B) 2.00 (50.0) 1.00 (25.0)...

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NewDamp™ Constant Natural Frequency Elastomeric Isolators  -5

O p t i c a l Ta b l e s a n d V i b r a t i o n C o n t r o l 1059 Email: [email protected] • Web: newport.com TECHNICAL REFERENCE OPTICAL TABLES HONEYCOMB, GRANITE AND RIGID STRUCTURES BREADBOARDS AND GRID PLATFORMS ISOLATORS WORKSTATIONS AND ISOLATED PLATFORMS STRUCTURAL RAILS AND CARRIERS TESTING, ANALYSIS AND DESIGN Model ND50-A A B 2.4 (61.0) REF A A 1.3 (33.0) REF SECTION A-A 0.265 (6.8) 4 PL REF THD A Dimensions [in. (mm)] Thread Model (Metric) A B Thd A ND50-A (M-ND50-A) 2.00 (50.0) 0.22 (5.5) 10-24 NC-2A (M5-0.8) NewDamp™ ND50 Series These isolators are based on conical elastic elements...

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