Airtac RMH Magnetic Coupling Rodless Cylinder RMH25X100S
Genuine AirTAC magnetic rodless cylinder, order code RMH25X100S from the RMH range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- BoreØ25 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 RMH25X100S
The RMH25X100S is the short-stroke, largest-bore entry of the AirTAC RMH magnetic rodless cylinder range. Its Dia 25 mm piston gives the strongest coupling in the series, 345 N holding force, while the built-in guide rail raises running accuracy, anti-rotation accuracy and load capacity in a body only 100 mm of stroke long.
At 100 mm the stroke sits in the tolerance band up to 250 mm, so it is held to +1.0/0 mm, the tighter of the two catalog bands. The loading table still allows 4.8/8 kg up to 500 mm stroke, so a short travel carries the full Dia 25 load case. PT1/8 ports serve one side of the body, CMSH, DMSH or EMSH sensors mount in the built-in groove, and adjusting-screw cushions at both ends can be replaced by separately ordered hydraulic shock absorbers for harder-duty stops.
Airtac RMH Magnetic Coupling Rodless Cylinder RMH25X100S Technical Specifications
| Order code | RMH25X100S |
|---|---|
| Product | Magnetic Rodless Cylinder |
| Bore | Ø25 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
Against its siblings, RMH25X100S trades stroke for force: the Dia 20 RMH20X100S carries only 220 N and a 3.6/6 kg load case, while this Dia 25 code lifts both figures to 345 N and 4.8/8 kg. If 100 mm proves short, stay in the Dia 25 row with RMH25X150S or longer, since the Dia 25 range reaches 800 mm. Thread choice on Dia 25 follows the same codes as Dia 20: blank position for PT1/8, G for G thread, T for NPT. The 100 mm stroke also keeps the tighter +1.0/0 mm tolerance that applies only up to 250 mm.
Applications
Short-stroke clamping station
Clamp or press workpieces over 100 mm with the 345 N coupling force of the largest RMH bore, positions confirmed by a CMSH sensor in the groove.
Indexing stopper on a conveyor
Raise and lower a stop pin in a 100 mm cycle on parts-flow lines, running at up to 400 mm/s on 0.2-0.7 MPa air filtered to 40 um.
Small slide in a compact fixture
Fit a guided, rodless axis into tight fixture layouts where a rod cylinder cannot, with a 100 mm stroke held to +1.0/0 mm tolerance for repeatable positioning.
FAQ
What are the key figures of the RMH25X100S?
Dia 25 mm bore, 100 mm stroke, double-acting magnetic coupling with 345 N holding force, PT1/8 ports, 0.2-0.7 MPa operating pressure, 50-400 mm/s speed, -20 to +70 C, stroke tolerance +1.0/0 mm because the stroke is at or below 250 mm, catalog load 4.8/8 kg up to 500 mm stroke, fixed cushions on adjusting screws, sensors CMSH, DMSH, EMSH.
Is a 100 mm stroke wasted on the Dia 25 bore?
No. The short travel keeps the tighter +1.0/0 mm stroke tolerance and a compact body, while the Dia 25 coupling still delivers the full 345 N holding force and the 4.8/8 kg loading case applies unchanged up to 500 mm stroke. For heavier loads or longer travel in the same bore, the ordering table continues to RMH25X150S and beyond, up to 800 mm.