Felt dampers (WFEHA30-20-4)
- Promotional pricing ends 31/12/2024
- Volume Discount
Product Details:
Manufacturer part number: WFEHA30-20-4
Brand: MISUMI
Price: 5.44 €
Delivery time: 7 Days
Technical Data:
Shape: Washers (Thickness 1mm~10mm)
Detailed Material: Polyamide Felt
O.D. D: 30 Ø
I.D. V: 20 Ø
Thickness T: - mm
Part Number
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WFEHA30-20-4
- Drawing / Specifications
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Back to the Category Discs/Sleeves (Rubber, Caoutchouc, Foam, Felt)
Technical Drawing - Polyurethane Rubber Washers
Open the technical drawing in the new window
Available dimensions and tolerances can be found under the tab More information.
Basic Properties (e.g., material, hardness, coating, tolerance) - Polyurethane Rubber Washers
| Type | No Adhesive | Adhesive | Material | Density (g/cm3) | Color | Allowable Temperature |
| Washer | WFEP | WFEPA | Polyester Felt | 0.2 | White | 0 ~ 120°C |
| WFEH | WFEHA | Polyamide Felt | -50 ~ 250°C | |||
| Bumper | BFEL | BFELA | Polyester Felt | Refer to the following | -10 ~ 60°C |
Further specifications can be found under the tab More information.
Composition of a Product Code - Polyurethane Rubber Washers
| Part Number | - | V | - | T |
| WFEP10 | - | 4 | - | 3 |
| Part Number | - | L | - | V |
| BFEL20 | - | 10 | - | 10 |
General Information - Polyurethane Rubber Washers
Selection details of rubber discs/rubber sleeves
- Material: heat-resistant antistatic, abrasion-resistant, highly abrasion-resistant, low-impact polyurethane rubber (PU/PUR), Vulkollan, ceramic polyurethane rubber, nitrile rubber sponge (NBR), chloroprene rubber (CR), ethylene cautchouc (EPDM), silicone rubber (SI), fluoro-cautchouk (FPM), hard rubber, butyl rubber (IIR), natural rubber, nitrile rubber foam, chloroprene rubber foam, polyethylene foam (EPDM foam), EPT sealing material, Silicone rubber foam, fluoro-rubber foam, special polyurethane foam (SOFRAS), polyester felt, polyester felt
- Hardness: Asker C5 to C35, Asker F75 to F85, Shore A15 to A95
- Versions: disc with bore holes, sleeves with holes, sleeves without holes, sleeves with counterbores, sleeves with external threads, sleeves with collar, dampers with round tip, dampers with conical tip
- Inner diameter: up to 80 mm
- Outer diameter: 6 to 100 mm
- Length: 1 to 10 mm (discs), 10 to 500 mm (sleeves)
Description/Basics
Rubber discs and rubber sleeves, also called rubber buffers, are generally used for vibration damping and impact damping. Rubber sleeves are often used as stopper buffers in industry. Rubber discs are occasionally also used as seals.
Discs and sleeves made of natural rubber are offered in different materials and hardnesses.
While rubber discs are often used for sealing, rubber sleeves are increasingly used as rubber buffers, stopper buffers, or elastomer dampers. MISUMI already offers such a rubber sleeve as a rubber buffer with external thread or counterbore for fastening.
The rubber buffer is also available with a vulcanized metal collar, which not only allows for a firm assembly, but also sits in the anti-backlash rubber sleeve. These adhesives are also available separately. In addition to the material of the rubber buffer, the shape of the stopper buffer is also responsible for the damping characteristic. conical or rounded rubber buffers can also develop a progressive damping curve that generates increasing damping.
Depending on the application and environmental influences, MISUMI offers rubber discs and rubber sleeves in various basic materials with the appropriate resistance. An overview of the intended uses of the respective natural rubber can be found under Natural Rubber Properties as PDF .
The rubber buffers made of polyurethane rubber are also available in an antistatic version. The specific resistance of antistatic rubber discs and rubber sleeves prevents static charging. This can prevent damage to electronic components.
For high temperature applications, MISUMI offers heat-resistant polyurethane rubber, which can withstand temperatures of approx. +120°C (see Specifications for further information).
Vulkollan, on the other hand, is a very abrasion-resistant polyurethane, the abrasion resistance of which is six times higher compared to conventional polyurethane.
Ceramic polyurethane washers and sleeves contain ceramic particles. Despite a low Shore hardness, they can be machined to give them a smooth surface.
MISUMI also offers foam discs and foam sleeves. In addition to damping, these can also have sealing properties. This is achieved by the foam discs due to the closed or semi-closed pores (EPT sealer) inside the material. For semi-closed pores, the pores are sealed under load. Therefore, the type of pores must always be observed for foams in order to select the appropriate foam depending on the application. You can get help for your selection by following this link.
Further properties of natural rubbers and foams can be found in the Properties PDF.
In addition to the aforementioned basic materials, the MISUMI online shop also offers felt discs and felt sleeves. Felt has the properties of capillary action and can absorb and release liquids such as oil. In addition, felt is gentle on sensitive surfaces and is often used for polishing surfaces.
A antivibration materials can also be used for two-sided mounting to dampen vibration.
MISUMI also offers vibration damping and impact damping materials in the form of sheets.
Application Examples - Polyurethane Rubber Washers
Application example: rubber roller
(1) Rubber sleeve, (2) Roller bearing, (3) Axles / Rotary Shafts, (4) Catch ropes
Application example: cylinder stopper buffer
(1) Rubber washer, (2) Floating joints, (3) Pneumatic cylinder
Industrial Applications
Part Number:
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Part Number
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| WFEHA30-20-4 |
| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | RoHS | Shape | Detailed Material | O.D. D (Ø) | I.D. V (Ø) | Thickness T (mm) | Length L (mm) | With or w/o Seals | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
5.44 € | 1 | Available | 7 Days | 10 | Washers (Thickness 1mm~10mm) | Polyamide Felt | 30 | 20 | - | - | With Seal |
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Back to the Category Disks/Sleeves (Rubber, Caoutchouc, Foam, Felt)
Technical Drawing - Polyurethane Rubber Washers
Open the technical drawing in the new window
Specification Tables - Polyurethane Rubber Washers
| Part Number | V Selection | T Selection | Unit Price | ||||||||||||
| Type | D | WFEP | WFEPA | WFEH | WFEHA | ||||||||||
| No Adhesive WFEP WFEH Adhesive WFEPA WFEHA (x1.1) ( ) Material Multiplier | 8 | 0 | 3 | 3 (WFEP ) WFEPA 4 (WFEH ) WFEHA | |||||||||||
| 10 | 0 | 4 | |||||||||||||
| 12 | 0 | 4 | 6 | ||||||||||||
| 15 | 0 | 4 | 6 | 8 | |||||||||||
| 20 | 0 | 6 | 8 | 10 | 12 | ||||||||||
| 25 | 0 | 6 | 8 | 10 | 12 | 16 | 20 | ||||||||
| 30 | 0 | 6 | 8 | 10 | 12 | 16 | 20 | ||||||||
■Bumper Type (L dimensions indicate the length of felt base materials. The values are for reference only.)
| Part Number | L | V | Unit Price | |||
| Type | D | Selection | L10 | L20 | L30 | |
| No Adhesive BFEL Adhesive BFELA (x1.1) ( ) Material Multiplier | 20 | 10 20 30 | 0 | |||
| 10 | ||||||
| 30 | 10 20 30 | 0 | ||||
| 10 | ||||||
More Information
Characteristics of Felt
1.Excellent in weather resistance. (Affected by alkaline solution.)
2.Excellent in oil absorbability. It has the property of soaking up oil by capillary action.
3.Excellent in oil absorbability. It can absorb up to approx. 80% of its total volume.
4.Has good polishing characteristics. Provides high polishing characteristics as it precipitates foreign materials within its tissue.
■Features of Materials
| Material | Details of Material | Application Example |
| Polyester Felt (Sheet) | Felt made of 100% polyester Soft with Density of 0.18 ~ 0.2. General-purpose Product. | Applicable to general purpose use as oil / water absorption, cushioning materials, etc. |
| Polyester Felt (with Binder) | PET : PET Binder (Bonding Material) =9:1 Fibers bonded together by the binder provides high morphological stability. | Protection material and bumper for portions exposed to high impact. |
| Polyamide Felt | Felt made of 100% polyamide Excellent heat/flame resistances. UL Std. Test V-0 Equiv. | Heat Resistant / Flame Retardant Bumpers |
| Sheep Wool Felt (Rayon, PET) | Felt made of 60 % sheep wool and 40% PET. JIS-R25W2 Standard Product. Excellent in oil/water retention ability. | Cushion Material, Liquid Application (Oiling), Spacer |
| Sheep Wool Felt | Felt made of 100% sheep wool Gives less damage to mating materials. | For Buffing |
| Polyester Felt (Bumper Type) | Density may vary depending on L dimensions. | Oil Application to Workpieces |
Basic information
| Material | Felt |
|---|
This page is Felt dampers, part number WFEHA30-20-4.
You can find the detail information about specifications and dimensions on part number WFEHA30-20-4.
Configure
Basic Attributes
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Thickness T(mm)
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Length L(mm)
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Type
- BFEL
- BFELA
- WFEH
- WFEHA
- WFEP
- WFEPA
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Shape
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Washers (Thickness 1mm~10mm) -
Bumper (Thickness 10mm~)
-
-
Detailed Material
- Polyester Felt
- Polyamide Felt
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O.D. D(Ø)
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I.D. V(Ø)
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With or w/o Seals
- No Seal
- With Seal
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Filter by CAD data type
- 2D
- 3D
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)
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Question:
What is Vulkollan?
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Answer:
Vulkollan is a highly abrasion-resistant polyurethane rubber that has high wear resistance. It is one of the high-performance rubbers that has little pressure deformation and can withstand high impact forces. In addition, Vulkollan has a high tear strength. However, over time Vulkollan may change its colour, but without losing its mechanical properties.
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Question:
Which rubber is resistant?
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Answer:
Vulkollan is an abrasion-resistant material. It has an approx. six-fold higher abrasion resistance than conventional polyurethane materials. Vulkollan is particularly suitable for applications where high abrasion is expected.
-
Question:
Which rubber washer is oil-resistant?
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Answer:
A rubber disc made of nitrile rubber (NBR) is highly resistant to various oils. This material is often used as a seal due to its good heat resistance and abrasion resistance.
-
Question:
Can a rubber sleeve be glued?
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Answer:
A rubber sleeve or rubber disc can be stuck in or glued in. However, it must be ensured that the correct adhesive is selected in relation to the material of the elastomer. If this is not taken into account, the adhesive does not have the desired effect or even attack and degrade the elastomer. In addition, the adhesive should support the respective property of the material, e.g., antistatic or temperature resistance.
Variation of this product
| Part Number |
|---|
| BFEL20-20-10 |
| BFEL20-30-0 |
| BFEL20-30-10 |
| WFEHA30-6-4 |
| WFEHA30-8-4 |
| WFEHA8-0-4 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Standard Shipping Days ? | RoHS | Shape | Detailed Material | O.D. D (Ø) | I.D. V (Ø) | Thickness T (mm) | Length L (mm) | With or w/o Seals |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
3.79 € | 1 | Available | 7 Days | 10 | Bumper (Thickness 10mm~) | Polyester Felt | 20 | 10 | - | 20 | No Seal | |
3.79 € | 1 | Available | 7 Days | 10 | Bumper (Thickness 10mm~) | Polyester Felt | 20 | 0 | - | 30 | No Seal | |
4.81 € | 1 | Available | 7 Days | 10 | Bumper (Thickness 10mm~) | Polyester Felt | 20 | 10 | - | 30 | No Seal | |
5.44 € | 1 | Available | 7 Days | 10 | Washers (Thickness 1mm~10mm) | Polyamide Felt | 30 | 6 | - | - | With Seal | |
5.44 € | 1 | Available | 7 Days | 10 | Washers (Thickness 1mm~10mm) | Polyamide Felt | 30 | 8 | - | - | With Seal | |
4.69 € | 1 | Available | 7 Days | 10 | Washers (Thickness 1mm~10mm) | Polyamide Felt | 8 | 0 | 4 | - | With Seal |
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