Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S
The AirTAC Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 150mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke150 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.25
- CushionFixed anti-impact bumper pads
- 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 MSG Stainless Steel Mini Air Cylinder MSG25X150S
The MSG25X150S is a JIS-standard round-body mini cylinder that works single acting: compressed air extends the 10 mm rod through a 150 mm stroke, and an internal return spring retracts it the moment air is released. That means one air line and one valve port instead of two, which simplifies plumbing and cuts air consumption on one-way jobs such as clamping, ejecting or pressing. Because the spring must be overcome, the minimum working pressure is 0.2 MPa (28-145 psi operating range), and the listed output is already net of the spring: about 171.8 N push at 0.5 MPa and 269.9 N at 0.7 MPa. A practical rule of thumb is to load this cylinder to roughly 60 percent of its 0.5 MPa force, about 103 N, which suits a workpiece near 10 kg on a horizontal clamp.
Construction matches the rest of the MSG family: a SUS304 stainless barrel with a hard-chrome (20 um) carbon-steel rod resists damp and light washdown conditions, while riveted covers and a fixed anti-impact bumper pad soften the stroke ends. The S in the model code means a magnet is fitted, so CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke signalling. Ports are 1/8" on every MSG bore, and the 150 mm stroke is the maximum standard length for this 25 mm bore, since spring-return travel is inherently limited.
Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S Technical Specifications
| Model | Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S |
|---|---|
| Series | MSG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 150 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 150 mm |
Specifications follow the official AirTAC MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø25mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 171.8 N |
| 0.7 MPa | 269.9 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S
| MSG | JIS round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB / CB / SDB | Mounting: FA flange, LB foot, CB clevis, SDB pivot bracket (with CB). |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, CB clevis, SDB pivot block, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S Is Used
Spring-return clamp
Clamps a fixture with about 171.8 N at 0.5 MPa; vent the valve and the spring retracts the jaw automatically, so a power cut releases the part safely.
Part eject from a chute
The 150 mm stroke pushes a finished part off a conveyor or out of a nest in one motion; the spring return clears the rod without a second valve port.
Light lid press and lift
Presses caps or lifts a small gate of roughly 10 kg within the 60 percent load guideline, with the fixed bumper pad softening both stroke ends.
Is the Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S the Right Cylinder?
Choose the MSG25X150S when your task is one-directional and 150 mm of powered travel is enough: the spring does the return, so you only switch one air line. At 0.5 MPa this 25 mm bore delivers about 171.8 N net push; if your load needs more, step up to the MSG32 or MSG40 (281.3 N and 439.6 N at 0.5 MPa), and if 171.8 N is generous, the MSG20 saves space. Remember the spring sets a 0.2 MPa minimum working pressure, and on air loss the rod simply retracts, so it will not hold a load in place. For a two-directional stroke or longer travel than 150 mm, move to the double-acting MG instead. Mount with LB foot, FA flange, CB clevis or SDB pivot brackets, add I or Y rod knuckles as needed, and note that this S variant already carries the magnet for CMSG/DMSG/EMSG switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA / CB / SDB) & knuckle
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion/impact settings and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MSG Stainless Steel Mini Air Cylinder MSG25X150S FAQ
This single acting push cylinder gives 171.8 N at 0.5 MPa and 269.9 N at 0.7 MPa, already net of the return spring. Operating pressure is 0.2-1.0 MPa (28-145 psi) with a 1.5 MPa (215 psi) proof pressure, fluid is air filtered to 40 um, speed is 50-800 mm/s, temperature -20 to +70 C, and the port is 1/8". The 150 mm stroke is the maximum standard length for a 25 mm MSG bore.
Air is supplied to one port to extend the rod; when the valve exhausts, the internal spring retracts it to the rest position, so the cylinder needs only one air line. On air loss the rod retracts rather than holding position, and the bumper pad only cushions the stroke ends, it is not a brake. The S suffix means a magnet is fitted, letting you mount CMSG, DMSG or EMSG switches for position signalling, a feature the plain MSG25X150 lacks.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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