Airtac MSG Stainless Steel Mini Air Cylinder MSG25X50S
The AirTAC Airtac MSG Stainless Steel Mini Air Cylinder MSG25X50S is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 MSG25X50S
The AirTAC MSG25X50S is a single acting, PUSH type JIS round-body mini cylinder: compressed air extends the 10 mm rod through a 50 mm stroke, and an internal return spring retracts it when air is released. Because air is only applied on the work stroke, the circuit needs just one air line and one valve port, which saves air and simplifies wiring for one-directional clamping, ejecting and pressing. The listed output is already NET of the return spring: about 171.8 N push at 0.5 MPa and 269.9 N at 0.7 MPa, with the spring setting a 0.2 MPa minimum working pressure. As a buyer insight, that 171.8 N at 0.5 MPa supports a realistic working load of roughly 103 N, or about 8 kg for a safe vertical lift.
Construction suits damp and washdown-prone lines: a SUS304 stainless barrel with a hard-chrome plated carbon-steel rod, riveted covers, a two-way lubricant-storing piston seal and a fixed anti-impact bumper pad that softens the stroke ends. The JIS standard footprint drops into standard JIS mini brackets and I/Y rod knuckles. The S code means a magnet is fitted, so CMSG, DMSG or EMSG switches can be mounted for end-of-stroke signalling. Ports are 1/8" and the maximum standard stroke for this bore is 150 mm; for a two-directional or longer stroke, step up to the double-acting MG.
Airtac MSG Stainless Steel Mini Air Cylinder MSG25X50S Technical Specifications
| Model | Airtac MSG Stainless Steel Mini Air Cylinder MSG25X50S |
|---|---|
| Series | MSG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MSG25X50S
| MSG | JIS round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MSG25X50S Is Used
Spring-return clamp
Clamps a fixture with about 171.8 N at 0.5 MPa; a valve dump lets the spring release the clamp automatically, so a power cut cannot leave the part locked.
Part ejection
Pushes finished parts off a conveyor stop or out of a nest on the work stroke; the spring retracts the rod for the next cycle with no return air line.
Small lid press
Presses caps or lids onto small containers within the 50 mm stroke; the fixed bumper pad softens the stroke end and the spring resets the ram.
Is the Airtac MSG Stainless Steel Mini Air Cylinder MSG25X50S the Right Cylinder?
Choose the MSG25X50S when a 25 mm bore fits your force window: 171.8 N push at 0.5 MPa and 269.9 N at 0.7 MPa, already net of the return spring. Keep the working load near 0.6 of the push force (about 103 N) for margin, or about 8 kg on a vertical lift. The spring return means the rod retracts to its rest position whenever air is released, and the minimum working pressure is 0.2 MPa (28 psi), not lower. The 50 mm stroke is well inside the 150 mm maximum standard stroke for this bore, but spring-return travel is inherently limited; if you need a longer stroke or powered movement in both directions, select the double-acting MG instead. Mounting options are LB foot, FA flange, CB clevis and SDB pivot, plus I and Y rod knuckles. This S variant carries a magnet for CMSG/DMSG/EMSG switches; specify the thread (PT blank, G or NPT) when ordering.
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 MSG25X50S FAQ
Push force is 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, air filtered to 40 um, speed 50-800 mm/s, temperature -20 to +70 C, and a 1/8" port on this 25 mm bore.
Air extends the rod; when air is released the internal spring retracts it to the rest position, so only one air line and one valve port are needed. The spring does not hold a load and the bumper pad is not a brake. The S code means a magnet is fitted, so CMSG, DMSG or EMSG switches can signal end of stroke; the double-acting MG, by contrast, uses air in both directions.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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