Rubber damper / with counterbore / fully configurable
Rysunek konturowy i tabela specyfikacji
Dimensional Drawing
| D | Tolerance |
| 40 or Less | ±0.5 |
| 41 to 60 | ±0.7 |
| Dimension | Tolerance | ||
| V | H | G | |
| 30 or Less | ±0.5 | ±0.5 | ±0.5 |
| 31 or more | — | ±0.7 | ±0.6 |
[ ! ]When L ≤ 30, V ≤ G − 4
When L > 30, V ≤ G − 6
| Type | [M] Material | [H] Hardness | Color |
| RBZN | Nitrile Rubber (NBR) | Shore A70 | Black |
| RBZC | Chloroprene Rubber (CR) | Shore A65 | Black |
| RBZU | Low Elasticity Rubber (Hanenaito GP−35LE) | Shore A35 | Black |
| RBZS | Silicon Rubber (SI) | Shore A70 | Light Gray |
| RBZA | Silicon Rubber (SI) | Shore A50 | Milky White |
| RBZF | Fluororubber (FPM) | Shore A80 | Black |
| RBZAM | Amber Color Rubber | Shore A45 | Amber Color |
[ ! ]Hanenaito is a registered trademark of Naigai Rubber Industry Co., Ltd.
Specification Table
| Part Number | — | D | — | V | — | H | — | G | — | L |
| RBZAM | — | D22 | — | V5 | — | H10 | — | G12 | — | L38 |
| Part Number | 1 mm Increments | ||||
| D | V | H | G | L | |
| RBZN Nitrile Rubber RBZC Chloroprene Rubber RBZU Low Elasticity Rubber RBZS Silicon Rubber (SI) Shore A70 RBZA Silicon Rubber (SI) Shore A50 RBZF Fluororubber (FPM) RBZAM Amber Color Rubber | 11 to 15 | 3 to 10 | 3 ≤ H < L | 7 to 53 (G ≤ D−4) | 6 to 30 |
| 5 ≤ H < L | 7 to 54 (G ≤ D−6) | 31 to 50 | |||
| 16 to 30 | 5 to 16 | 6 to 30 | |||
| 31 to 50 | |||||
| 31 to 45 | 5 to 25 | 10 to 30 | |||
| 31 to 50 | |||||
| 46 to 60 | 5 to 30 | 25 to 30 | |||
| 31 to 50 | |||||
Szczegółowe informacje
Podstawowe informacje
Kontury i specyfikacja
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
