Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X150S
Genuine AirTAC magnetic rodless cylinder, order code RMH20X150S from the RMH range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- BoreØ20 mm
- Stroke150 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 RMH20X150S
RMH20X150S is the 20 mm bore AirTAC RMH magnetic rodless cylinder built with a 150 mm stroke. Because the piston drives the slide through magnets, the tube needs no rod seal and the housing stays shorter than an equivalent rod cylinder at this travel. The 20 mm coupling holds 220 N, the guide rail in the slide improves running and anti-rotation accuracy, and since the stroke stays at or below 250 mm the tolerance is the tighter +1.0 / 0 mm band.
The ports are PT1/8 on one side of the body, and the piston chamber is isolated from the slide so dust at the tooling point does not reach the air side. Cycle motion runs at 50-400 mm/s between -20 and +70 C on 0.2-0.7 MPa air, and a CMSH, DMSH or EMSH sensor sits in the body groove where you need the switching point.
Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X150S Technical Specifications
| Order code | RMH20X150S |
|---|---|
| Product | Magnetic Rodless Cylinder |
| Bore | Ø20 mm |
| Stroke | 150 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
Within the 20 mm bore this code sits between the short 50-100 mm builds and the long strokes that reach 800 mm, so pick 150 mm when a conveyor width or fixture pitch sets the travel. Against the 16 mm RMH16 you gain the 220 N coupling and 3.6 / 6 kg loading over 140 N and 3 / 5 kg; against the 25 mm RMH25 you give up 345 N and the 4.8 / 8 kg rating. Thread alternatives at this bore are code G for parallel G and code T for NPT; this version is PT1/8.
Applications
Cross-conveyor ejector
A 150 mm stroke clears a typical lane width, pushing rejected cartons off the belt while the guide rail resists side load from the push.
Box kicker on a packaging line
Positioning a CMSH or DMSH switch in the body groove times the kick, and the sealed coupling keeps board dust out of the piston chamber.
Part alignment station
Two of these slides facing each other square up parts within the 3.6 / 6 kg permitted load before a press or assembly head comes down.
FAQ
What are the key figures of the RMH20X150S?
Bore 20 mm, stroke 150 mm with +1.0 / 0 mm tolerance, magnetic holding force 220 N, catalog load 3.6 / 6 kg up to a 500 mm stroke, ports PT1/8, operating pressure 0.2-0.7 MPa, speed 50-400 mm/s, temperature -20 to +70 C, fluid air filtered to 40 um.
Does the 150 mm stroke change the tolerance or the load rating?
Strokes up to 250 mm keep the tighter +1.0 / 0 mm tolerance, so the 150 mm build falls in that band; longer strokes from 251 to 800 mm use +1.5 / 0 mm. The 3.6 / 6 kg load rating applies up to 500 mm, but the catalog load falls as the stroke gets longer, so confirm the value from the datasheet for your mounting case.