Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X100S
Genuine AirTAC magnetic rodless cylinder, order code RMH20X100S from the RMH range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- BoreØ20 mm
- Stroke100 mm
- Port threadPT1/8
- ActionDouble acting, magnetic coupling
- GuideBuilt-in guide rail
- Ø10holding force 55 N · strokes to 300 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X100S
At 100 mm this is the shortest stroke in the Dia 20 RMH range, and that is the point: the magnetically coupled rodless design needs no piston rod, so a 100 mm travel fits into an envelope a rod cylinder of equal stroke cannot. The built-in guide rail raises running accuracy, anti-rotation accuracy and load capacity, while the isolated piston chamber keeps the slide free of dirt.
Key figures for this code: 220 N magnetic holding force, 0.2-0.7 MPa operating pressure with 1.2 MPa (175 psi) proof pressure, 50-400 mm/s speed, -20 to +70 C, and PT1/8 ports on one side. Both ends carry fixed cushions on adjusting screws that can be replaced by separately ordered hydraulic shock absorbers, and CMSH, DMSH or EMSH sensors fit the built-in groove. Air must be filtered by a 40 um element.
Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X100S Technical Specifications
| Order code | RMH20X100S |
|---|---|
| Product | Magnetic Rodless Cylinder |
| Bore | Ø20 mm |
| Stroke | 100 mm |
| Port thread | PT1/8 |
| Action | Double acting, magnetic coupling |
|---|---|
| Guide | Built-in guide rail |
| Ø10 | holding force 55 N · strokes to 300 mm |
| Ø16 | holding force 140 N · strokes to 500 mm |
| Ø20 | holding force 220 N · strokes to 800 mm |
| Ø25 | holding force 345 N · strokes to 800 mm |
| Fluid | Air (filtered by 40 µm element) |
| Operating pressure | 0.2-0.7 MPa |
| Proof pressure | 1.2 MPa (175 psi) |
| Temperature | -20 to +70 °C |
| Speed | 50-400 mm/s |
| Stroke tolerance | +1.0 / 0 mm (≤250), +1.5 / 0 mm (251-800) |
| Cushion | Fixed, adjusting screws |
| Sensors | CMSH, DMSH, EMSH |
| Port | M5×0.8 (Ø10, 16), PT1/8 (Ø20, 25) |
Source: AirTAC Products Catalog 2026A (PDF01-P0612..P0613), RMH series specifications, load tables, strokes and ordering code.
How to choose
Stay with RMH20X100S when 100 mm covers your transfer and you want the tightest envelope of the Dia 20 batch; RMH20X200S and RMH20X250S extend the same bore to more travel. If your load force is under 140 N, RMH16X100S is the smaller alternative; if the 220 N holding force or the 3.6 / 6 kg Dia 20 load case (given up to a 500 mm stroke) is not enough, move to RMH25X100S at 345 N. PT1/8 is the port here; the catalog also lists G and NPT threads on Dia 20 under ordering codes G and T.
Applications
Compact pick-and-place
A 100 mm hop between two adjacent stations, where a rod cylinder of equal travel would stick out of the fixture.
Gate and flap actuation
Opens and closes short packaging machine gates, with the sealed tube keeping the slide isolated from product dust.
Light clamp or press stroke
A short controlled squeeze whose applied load force stays below the 220 N magnetic holding force of the Dia 20 coupling.
FAQ
What are the key figures of the RMH20X100S?
Dia 20 bore, 100 mm stroke, 220 N magnetic holding force, double acting with magnetic coupling and built-in guide rail, 0.2-0.7 MPa operating pressure (1.2 MPa / 175 psi proof), 50-400 mm/s, -20 to +70 C, PT1/8 ports, fixed cushions on adjusting screws, sensors CMSH, DMSH, EMSH.
How much load can the slide carry at 100 mm?
The catalog load table allows 3.6 / 6 kg for Dia 20 up to a 500 mm stroke, so at 100 mm you are deep inside that range with margin; keep the applied load force below the 220 N holding force and confirm the detailed load cases from the datasheet.