Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X750S
Genuine AirTAC magnetic rodless cylinder, order code RMH20X750S from the RMH range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- BoreØ20 mm
- Stroke750 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 RMH20X750S
The RMH20X750S sits only 50 mm below the longest stroke the Dia 20 mm RMH bore can reach, giving 750 mm of magnetically driven travel on a slide guided by a built-in rail for running accuracy and anti-rotation. The S suffix marks the built-in magnet that lets CMSH, DMSH or EMSH switches ride the sensor groove along the full travel.
Because the piston chamber is isolated from the slide, dirt stays out and service life stretches, useful over such a long working span. Ports are PT1/8 on one side of the body, the stroke carries a +1.5 / 0 mm tolerance in this range, and the unit runs on 0.2-0.7 MPa air filtered to 40 um at 50-400 mm/s across -20 to +70 C.
Airtac RMH Magnetic Coupling Rodless Cylinder RMH20X750S Technical Specifications
| Order code | RMH20X750S |
|---|---|
| Product | Magnetic Rodless Cylinder |
| Bore | Ø20 mm |
| Stroke | 750 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
Choose the RMH20X750S when the path is fixed and 750 mm covers it with a small reserve: the RMH20X700S is the nearest shorter sibling if a full 50 mm less travel is acceptable, and the RMH20X800S is the only step up. Do not try to stretch a Dia 16 cylinder instead, because the RMH16X500S tops out at 500 mm stroke and 140 N holding force. If the same 750 mm move must carry the heavier load case, the RMH25X750S brings 345 N holding force and a higher load table on identical PT1/8 porting.
Applications
Zoned feed track
Advance parts along a 750 mm track and let DMSH or EMSH switches in the built-in groove report intermediate zones for sorting or counting.
Tote shuttle drive
Push a tote shuttle between two pick faces spaced about 750 mm apart, with the rail-guided slide resisting skew as the load accelerates.
Vertical gate lift
Raise a machine guard or stopper gate using the near-maximum travel of this bore, sizing the weight so the derated long-stroke load is not exceeded.
FAQ
Which figures define the RMH20X750S?
Dia 20 mm bore, 750 mm stroke (tolerance +1.5 / 0 mm in this range), double acting with magnetic coupling and built-in guide rail, holding force 220 N, PT1/8 ports on one side, built-in magnet for CMSH / DMSH / EMSH sensors, 0.2-0.7 MPa air filtered to 40 um, 50-400 mm/s, -20 to +70 C.
Can the end cushions be tuned for a 750 mm move at speed?
Both ends have fixed cushions with adjusting screws. For heavy loads or high speeds near the 400 mm/s limit, the catalog allows replacing them with hydraulic shock absorbers ordered separately.