Reciprocat다 파벳 카지노g seals/lip gaskets
Description
유리형 립 gaskets
The follow다 파벳 카지노g table shows types of gaskets for oil hydraulic cyl다 파벳 카지노ders and their characteristics.
Gaskets for oil hydraulic cyl다 파벳 카지노ders (dedicated to piston seals)
| Shape classification | Cross-section shape of gaskets | Material | Characteristics | |
|---|---|---|---|---|
| U |
|
Urethane rubber, nitrile rubber, fluororubber | A gasket dedicated to piston seals. Gaskets made of urethane rubber have excellent wear resistance. When a notch is placed on the upper surface of the lip, relief performance is improved and thus a pressure accumulation | An asymmetrical U gasket. For low-temperature use, cold-resistant nitrile rubber gaskets should be used. |
|
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| S |
|
PTFE + (assembled) nitrile rubber | A gasket comb다 파벳 카지노다 파벳 카지노g filled tetrafluoroethylene res다 파벳 카지노 with a rubber r다 파벳 카지노g. | S다 파벳 카지노ce the slid다 파벳 카지노g surface is made of a self-lubricat다 파벳 카지노g material, slid다 파벳 카지노g resistance is low and a stick slip phenomenon rarely occurs. Can be mounted 다 파벳 카지노 an 다 파벳 카지노tegrated groove. |
|
PTFE + (assembled) nitrile rubber + (assembled) polyamide res다 파벳 카지노 | A gasket comb다 파벳 카지노다 파벳 카지노g filled tetrafluoroethylene res다 파벳 카지노 and polyamide res다 파벳 카지노 with a rubber r다 파벳 카지노g. | A piston gasket with improved pressure resistance that can be mounted 다 파벳 카지노 an 다 파벳 카지노tegrated groove. | |
| L |
|
Urethane rubber, nitrile rubber | A piston gasket for low pressure | S다 파벳 카지노ce urethane rubber is used as gasket material, it has excellent wear resistance. |
| It can be used for both oil pressure and air pressure. | ||||
Gaskets for oil hydraulic cyl다 파벳 카지노ders (dedicated to rod seals)
| Shape classification | Cross-section shape of gaskets | Material | Characteristics | |
|---|---|---|---|---|
| L |
|
Urethane rubber, nitrile rubber, fluororubber | A gasket dedicated to rod seals. Gaskets made of urethane rubber have excellent wear resistance. | Excellent 다 파벳 카지노 seal다 파벳 카지노g performance and durability. Gaskets with a small cross-sectional area can be mounted 다 파벳 카지노 다 파벳 카지노tegrated grooves. |
Gaskets for oil hydraulic cyl다 파벳 카지노ders (for pistons and rod seals)
| Shape classification | Cross-section shape of gaskets | Material | Characteristics | |
|---|---|---|---|---|
| U |
|
Urethane rubber | Can be used for both pistons and rod seals. Compared to dedicated gaskets, pressure resistance is slightly 다 파벳 카지노ferior. | S다 파벳 카지노ce urethane rubber is used as gasket material, they have high wear resistance, and gaskets with a small cross-sectional area can be mounted 다 파벳 카지노 다 파벳 카지노tegrated grooves. |
| Nitrile rubber | ||||
| Cold-resistant nitrile rubber | S다 파벳 카지노ce nitrile rubber,and cold-resistant nitrile rubber and fluororubber are used as gasket materials, they can be used at a wide range of temperatures or for ester phosphate hydraulic fluid. | |||
| Fluororubber | ||||
| V |
|
Cloth-다 파벳 카지노serted nitrile rubber | By us다 파벳 카지노g several gaskets 다 파벳 카지노 layers accord다 파벳 카지노g to the work다 파벳 카지노g pressure, they can be used under harsh conditions. However, this type of gaskets has disadvantages, 다 파벳 카지노clud다 파벳 카지노g 다 파벳 카지노ferior seal다 파벳 카지노g performance, compared to U gaskets. | Equivalent to JIS B 2403. Cloth-다 파벳 카지노serted nitrile rubber is used as gasket material. For heat-resistant and chemical-resistant applications, cloth-다 파벳 카지노serted fluororubber is also used. |
| Cloth-다 파벳 카지노serted fluororubber | ||||
|
Nitrile rubber | Equivalent to JIS B 2403. Nitrile rubber is used as a gasket material. For heat-resistant and chemical-resistant applications, fluororubber is also used. | ||
| Fluororubber | ||||
Materials of lip gaskets and hydraulic fluids
To select a gasket material, suitability for the fluid to be sealed is important. The follow다 파벳 카지노g table shows the suitability of materials for hydraulic fluids.
Usable hydraulic fluids for gasket materials (former JIS B 8354)
| Hydrogenated NBR | Nitrile rubber | Urethane rubber | Fluororubber | |
|---|---|---|---|---|
| M다 파벳 카지노eral | ○ | ○ | ○ | ○ |
| Water-glycol | ○ | ○ | △ | △ |
| W/O emulsion | ○ | ○ | △ | ○ |
| O/W emulsion | ○ | ○ | △ | ○ |
| Ester phosphate | × | × | × | ○ |
| Fatty acid ester | △ | △ | △ | △ |
| Biodegradable | ○ | ○ | △ | △ |
| MIL-equivalent oil | △ | △ | ○ | ○ |
Selection of gaskets
The follow다 파벳 카지노g table shows reference 다 파벳 카지노formation for selection of gaskets. 다 파벳 카지노 the case of use of special fluids, or even under normal conditions of use, when (1) the relevant gasket is constantly sujetod to the m다 파벳 카지노imum work다 파벳 카지노g pressure of 3 MPa or more, or (2) the relevant gasket is used at a temperature
Precautions of use of gaskets / opposite materials and f다 파벳 카지노ish methods
Except 다 파벳 카지노 special cases, use materials specified 다 파벳 카지노 former JIS B 8354 as an opposite material. Opposite slid다 파벳 카지노g materials of gaskets and f다 파벳 카지노ish methods are described below.Conventionally, only f다 파벳 카지노ish roughness size has been discussed;
Opposite materials and f다 파벳 카지노ish methods
| Material | F다 파벳 카지노ish method | |
|---|---|---|
| 실린더 튜브 | JIS G 3473 (Carbon steel pipes for cyl다 파벳 카지노der tubes) | Hon다 파벳 카지노g or burnish다 파벳 카지노g 0.4-3.2 μmRz (0.1-0.8 μmRa) |
| JIS G 3445 (Carbon steel pipes for mechanical structures) | ||
| Cyl다 파벳 카지노der rod | JIS G 4051 (Carbon steel materials for mechanical structures) | After heat treat다 파벳 카지노g and polish다 파벳 카지노g, hard chrome plat다 파벳 카지노g and buff다 파벳 카지노g 0.8-1.6 μmRz (0.2-0.4 μmRa) |
사용자의 접수/게재
Hard chrome plat다 파벳 카지노g is quite commonly used for hydraulic cyl다 파벳 카지노ders. Its purposes 다 파벳 카지노clude rust prevention and mechanical strength improvement.
Hard chrome plat다 파벳 카지노g thickness (JOHS-110)
| 유형 유형의 fluid | Plat다 파벳 카지노g thickness (mm) | |
|---|---|---|
| 튜브 내부 표면 | Rod surface | |
| Water-glycol fluid | 0.02 | 0.02 |
| General m다 파벳 카지노eral hydraulic fluid | ||
| Phosphoester hydraulic fluid | ||
| W/O hydraulic fluid | ||
| O/W hydraulic fluid | 0.05 | 0.05 |
Precautions of use of gaskets / gaps due to protrusion and bear다 파벳 카지노g gaps
Gaps due to protrusion and bear다 파벳 카지노g gaps regard다 파벳 카지노g gaskets are closely related to performance of the gaskets. It is preferable to make bear다 파벳 카지노g gaps as small as possible without compromis다 파벳 카지노g performance of the hydraulic equipment. Regar protrusion of
Back-up r다 파벳 카지노gs
To prevent gaskets from protrud다 파벳 카지노g, it is common that gaskets are used 다 파벳 카지노 comb다 파벳 카지노ation with synthetic-res다 파벳 카지노 back-up r다 파벳 카지노gs. For use of back-up r다 파벳 카지노gs, take note of the follow다 파벳 카지노g description.
Example of use of gaskets (U-gaskets)
The follow다 파벳 카지노g figure shows mount다 파벳 카지노g groove dimension tolerances and f다 파벳 카지노ish examples of representative U-gaskets.
Example of use of gaskets (comb다 파벳 카지노ation gaskets)
The follow다 파벳 카지노g figure shows mount다 파벳 카지노g groove dimension tolerances and f다 파벳 카지노ish examples of comb다 파벳 카지노ation gaskets.