Rubber-metal elements / cylindrical, stepped / external thread on both sides / eyelet plate, stainless steel / CR, NBR conductive / A60 (Part Numbers - CAD Download)

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Highly conductive rubber with stainless steel core is used. The tip of the male thread is slotted and the plate has a slotted hole for easy installation.

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Back to the Category Antivibration Materials

Technical Drawing - Rubber-Metal Elements

Electroconductive Antivibration Rubber Mounts/Both Threaded:Related Image

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Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Rubber-Metal Elements

■Both Ends Threaded Studs

Type	Material		Hardness	Accessory
	Main Body	Metal Fitting
DBGOMA	Conductive Nitrile Rubber	EN 1.4301 Equiv.	Shore A60	Nut, Spring Washer 2 pcs. each
EBGOMA	Chloroprene Rubber

■Threaded Stud, Plate Mount

Type	Material		Hardness	Accessory
	Main Body	Metal Fitting
DBGOMP	Conductive Nitrile Rubber	EN 1.4301 Equiv.	Shore A60	Nut, Spring Washer 1 pc. each
EBGOMP	Chloroprene Rubber

Further specifications can be found under the tab More information.

Composition of a Product Code - Rubber-Metal Elements

Part Number

DBGOMA15150

General Information - Rubber-Metal Elements

Oscillation damper - stop buffer - vibration damper - rubber metal buffer - rubber metal elements - rubber discs - product assortment

Oscillation Damper/Stop Buffer/Vibration Damper Selection Details

- Material: natural rubber (NR), chloroprene rubber (CR), nitrile rubber (NBR), silicone (SI)

- Mounting plate: steel, stainless steel

- Hardness: Shore A45, A60, C19.7, C25.3, C29.8, C30, C38.0, C44, C44.3, C44.5, C50, C52.5

- Properties: weather resistant, water resistant, oil resistant, ozone resistant, electrically conductive

- Height: 3 to 34 mm

- Thread: M4 to M8

- Load: 1.77 N to 1225 N

Description/Basics

Rubber metal elements, or also called rubber metal buffers, are generally used for oscillation and vibration damping. They are not only used to reduce structure-borne noise (transmitting vibrations), but also demonstrably reduce noise generation. This property plays an increasingly important role in the industry and mechanical engineering, as noise reduction plays an increasingly important role.

The vulcanized rubber buffers are generally fitted with mounting plates on one side or both sides. The mounting plates are provided with internal threads, external threads or through holes. Depending on the installation requirements, MISUMI offers the appropriate vibration damper.
MISUMI offers vibration-damping rubber in various materials, with different advantages and properties. Not only the respective loads and vibration frequencies must be observed when selecting rubber buffers, but depending on the application the resistance to environmental influences (e.g., oil resistance) also plays an important role. The design of the damping material also influences the damper characteristic, which can develop a degressive or progressive damping effect. It should be noted that vibration dampers do not allow complete isolation and decoupling of vibrations, but this is greatly reduced. You can find further details under the tab More information.

An overview of the different vibration dampers and materials can be found in the selection process as a PDF .

Rubber metal elements are often used to reduce vibration and noise in a wide variety of applications in almost all industries. Motors, pumps, and other vibration generating units are often elastically supported with vibration dampers.

Natural Rubber (NR)
Rubber metal elements made of natural rubber offer the advantage that they form a low heat development (low "heat-build-up" values) during internal creep. However, a vibrating damper made of natural rubber should not come into contact with oil, as this will cause the rubber buffer to swell and become porous, which can reduce its damping properties.

Chloroprene Rubber (CR)
Vibration dampers made of chloroprene rubber have an excellent weather resistance and good oil and ozone resistance. However, rubber buffers made of chloroprene rubber have only limited resistance to water.

Nitrile Rubber (NBR)
Rubber buffers made of nitrile rubber have the advantage of high tear resistance and abrasion resistance. In addition, rubber buffers made of nitrile rubber have good resistance to hydrocarbons, fats and oils. As a result, this material is often used for seals because it also has good temperature resistance. Furthermore, vibration dampers made of nitrile rubber are electrically conductive.

Silicone and Silicone Gel (SI)
Rubber, silicone metal bearings are very temperature-resistant, water-resistant and durable in response to the other materials. Vibration dampers made of silicone rubber also have very good chemical resistance. Silicone is a soft material that has very good damping properties, but can absorb only a small amount of supporting force.
Further information on the hardness of the various rubbers can be found under Rubber Properties as a PDF.

Application Examples - Rubber-Metal Elements

Application example - rubber metal buffer with [Aug] plate and internal threads - vibration dampers on base plates

Application example: vibration damper internal thread and eye plate
(1) Screw , (2) mounting plate , (3) screw

Application example - rubber metal buffer with [Aug] plate and external thread - vibration damper on base plates

Application example: vibration damper external thread and eye plate
(1) Nut , (2) mounting plate , (3) screw

Application example - rubber metal buffer with external thread and internal thread

Application example: threaded vibration absorber
(1) Screw , (2) mounting plate , (3) base plate (meviy), (4) nut

Application example - rubber metal buffer with two-sided internal thread

Application example: vibration absorber with external thread
(1) Nut , (2) mounting plate , (3) base plate (meviy)

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

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Part Number
EBGOMA12160
EBGOMA15150
EBGOMA20150
EBGOMA20200
EBGOMA25180
EBGOMA30180
EBGOMA40250
EBGOMP20150
EBGOMP20200
EBGOMP25180
EBGOMP30180
EBGOMP40250

Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Maximum Operating Load (N)	Properties	Connection Type	Connecting Screw M	Height H (mm)	Spring Constant (N/mm)	Material	Operating Temperature Range (°C)	Applied Load (N)	O.D. D (Ø)
9.58 €	1	Available	5 Days	10	78	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	5	16	41	[Chloroprene] Chloroprene Rubber	-20～70	30～78	12
9.70 €	1	Available	5 Days	10	130	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	5	15	74	[Chloroprene] Chloroprene Rubber	-20～70	59～130	15
10.20 €	1	Available	5 Days	10	191	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	6	15	130	[Chloroprene] Chloroprene Rubber	-20～70	98～191	20
10.45 €	1	Available	5 Days	10	98	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	6	20	78	[Chloroprene] Chloroprene Rubber	-20～70	59～98	20
11.46 €	1	Available	5 Days	10	250	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	6	18	200	[Chloroprene] Chloroprene Rubber	-20～70	112～250	25
12.46 €	1	Available	5 Days	10	450	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	8	18	310	[Chloroprene] Chloroprene Rubber	-20～70	226～450	30
16.38 €	1	Available	5 Days	10	930	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Both Ends Threaded Studs	8	25	340	[Chloroprene] Chloroprene Rubber	-20～70	196～930	40
10.07 €	1	Available	5 Days	10	191	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Threadeds, Plate Stopper Type	6	15	130	[Chloroprene] Chloroprene Rubber	-20～70	98～191	20
10.33 €	1	Available	5 Days	10	98	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Threadeds, Plate Stopper Type	6	20	78	[Chloroprene] Chloroprene Rubber	-20～70	59～98	20
11.97 €	1	Available	5 Days	10	250	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Threadeds, Plate Stopper Type	6	18	200	[Chloroprene] Chloroprene Rubber	-20～70	112～250	25
13.60 €	1	Available	5 Days	10	450	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Threadeds, Plate Stopper Type	8	18	310	[Chloroprene] Chloroprene Rubber	-20～70	226～450	30
17.51 €	1	Available	5 Days	10	930	Durability / Weather Resistance / Water Resistance / Oil Resistance / Ozone Resistance	Threadeds, Plate Stopper Type	8	25	340	[Chloroprene] Chloroprene Rubber	-20～70	196～930	40

Back to the Category Antivibration Materials

Technical Drawing - Rubber-Metal Elements

Electroconductive Antivibration Rubber Mounts/One End Threaded/One End Tapped:Related Image

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Specification Tables - Rubber-Metal Elements

Part Number		D₁	D₂	H₁	H₂	t	ℓ	S	M (Coarse Thread)	W₁xW₂	h	P	Allowable Load N {kgf}	Working Load N {kgf}	Spring Constant N/mm {kgf/cm}	X Direction Allowable Load N {kgf}	Rigidity Ratio kx/kz
Type	No.
Both Ends Threaded Studs DBGOMA EBGOMA Threaded Stud, Plate Mount DBGOMP EBGOMP	12160	12	10	16	12.0	2.0	13	11	5	-	-	-	110 {11}	30~78 {3~8}	41 {42}	25 {2.5}	0.2
	15150	15	12	15	11.0		16	12					160 {16}	59~130 {6~13}	74 {75}	34 {3.4}	0.2
	20150	20	15					13	6	49x20	6.5x8.5 Slotted Hole	36	280 {29}	98~191 {10~19}	130 {130}	69 {7}	0.15
	20200			20	16.0								180 {18}	59~98 {6~10}	78 {80}	49 {5}	0.19
	25180	25	20	18	13.4	2.3	20	16		56x25		42	490 {50}	112~250 {11~25}	200 {200}	98 {10}	0.16
	30180	30	25	18	13.4		23	20	8	62x30		48	890 {91}	226~450 {23~46}	310 {310}	170 {17}	0.16
	40250	40	34	25	20.4		33	25		76x40	9x11 Slotted Hole	60	1810 {185}	196~930 {20~95}	340 {340}	360 {37}	0.17

Selection Methods, Mounting Methods, Properties, Cautions >> P.460

■Electroconductive Rubber Characteristics

Item	Unit	Value
Specific Gravity	-	1.31
Hardness	Shore A	60
Elongation	%	545
Tensile Strength	MPa	11.8
Specific Volume Resistivity	Ω • cm	8x10³

Measuring Method: JIS K 6301
The above values are not guaranteed values but an example of measured values.

More Information - Rubber-Metal Elements

■Features
[DBGOMA, DBGOMP, DBGONA, DBGONP]
· The problem of antivibration rubber, susceptibility to insulation has been solved by the high electroconductive rubber with volume resistivity value of 10³Ω · cm.
[EBGOMA, EBGOMP, EBGONA, EBGONP]
· High quality product made of chloroprene rubber excellent in durability
[Common]
· Mounting studs are made of EN 1.4301 Equiv. The tips are slotted and the mounting holes on flanges are also slotted for ease of mounting.

Products homepage

Basic information

Type	Antivibration Rubbers	Application	Vibration Control	Hardness(Shore A)	60
Antivibration Rubber Type	Round Type	Body Color	Black

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Basic Attributes

Maximum Operating Load(N)
78

98

130

191

250

450

930
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Connection Type
- Both Ends Threaded Studs
- Threadeds, Plate Stopper Type
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Connecting Screw M
- 5
- 6
- 8
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Height H(mm)
15

16

18

20

25
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Spring Constant(N/mm)
41

74

78

130

200

310

340
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Material
- Chloroprene
  - Chloroprene Rubber
- Nitrile Rubber
  - Conductive Nitrile Rubber
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O.D. D(Ø)
- 12
- 15
- 20
- 25
- 30
- 40
Clear
Type
- DBGOMA
- DBGOMP
- EBGOMA
- EBGOMP
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Properties
- Durability
- Weather Resistance
- Water Resistance
- Oil Resistance
- Ozone Resistance
- Electrical Conductivity
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently Asked Questions (FAQ)

Question:
Can the rubber buffers be subjected to tension?: Answer:
Rubber buffer or rubber metal elements should not be subjected to pull. In this case, the vulcanized holding plate may be separated from the damping material. Therefore, vibration dampers should only be used in designs that subject it to pressure. This ensures that the vibration damper does not suffer a fatigue fracture.
Question:
Do you have oil-resistant rubber buffers?: Answer:
In an environment with oil-containing substances, a rubber metal buffer made of nitrile rubber (NBR) can be used. Since this material is oil-resistant, it is quite often used for seals. Other materials can swell up in contact with greases or oils, which will cause the rubber buffer to fail and cause it to lose its damping properties.
Question:
Which rubber buffer can be used in water vapour?: Answer:
A rubber metal buffer made of silicone rubber or silicone gel can be used here. It is highly resistant to water and offers very good damping properties. Similar to sanitary systems, this material is very resistant to aging, chemicals and temperature.
Question:
What is the permissible operating temperature of rubber metal silicone buffers?: Answer:
The maximum temperature resistance of silicone rubber buffers is at approx. 200°C. It is recommended to check the temperature resistance of the respective product. This can be found under the More Information tab.