Airtac MSG Stainless Steel Mini Air Cylinder MSG40X75S
The AirTAC Airtac MSG Stainless Steel Mini Air Cylinder MSG40X75S is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 75mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke75 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- 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 MSG40X75S
The MSG40X75S is a single acting, PUSH type JIS round-body mini cylinder: compressed air extends the 16 mm hard-chrome rod through a 75 mm stroke, and an internal return spring retracts it the moment air is released. Because air is only used on the work stroke, one air line and one valve port are enough, which trims air consumption and simplifies the circuit for one-directional clamping, ejecting or pressing. The 40 mm bore delivers about 439.6 N push at 0.5 MPa and 690.8 N at 0.7 MPa, figures already net of the return spring, and the spring sets a 0.2 MPa (28 psi) minimum working pressure. As a buyer insight, applying the usual 0.6 safety factor gives a safe vertical lift of roughly 26 kg at 0.5 MPa.
Construction matches the JIS mini-cylinder footprint, so the MSG40X75S drops into standard JIS brackets and I/Y rod knuckles without rework. The barrel is SUS304 stainless and the rod is hard-chrome plated carbon steel, a pair that resists damp and washdown environments, while riveted covers and a fixed anti-impact bumper pad soften the stroke ends. The fitted magnet (the S in the code) allows CMSG, DMSG or EMSG switches to be mounted for end-of-stroke signalling, and the 1/8" port is common to every MSG bore. Note that spring-return travel caps the standard stroke at 150 mm; for a two-directional or longer stroke, step up to the double-acting MG series.
Airtac MSG Stainless Steel Mini Air Cylinder MSG40X75S Technical Specifications
| Model | Airtac MSG Stainless Steel Mini Air Cylinder MSG40X75S |
|---|---|
| Series | MSG JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 439.6 N |
| 0.7 MPa | 690.8 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 MSG40X75S
| MSG | JIS round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MSG40X75S Is Used
Spring-return clamp
Clamps fixtures or workpieces with about 439.6 N at 0.5 MPa; if air is lost the return spring releases the clamp automatically instead of leaving it locked.
Part eject
Pushes finished parts off a chute or nest at the end of a cycle; the spring retracts the rod without a second valve port, keeping the eject circuit minimal.
Lid press
Presses caps or lids onto containers in a one-way stroke; the fixed bumper pad softens the stroke end and the magnet plus a CMSG/DMSG/EMSG switch confirms full extension.
Is the Airtac MSG Stainless Steel Mini Air Cylinder MSG40X75S the Right Cylinder?
Choose the MSG40X75S when a one-way push of roughly 440 N at 0.5 MPa (about 26 kg safe vertical load with a 0.6 factor) over a 75 mm stroke is the job, and a spring return is acceptable or preferred. It is the largest MSG bore, so if you need less force the MSG25 or MSG32 save space, and if 439.6 N at 0.5 MPa is marginal, run at 0.7 MPa for 690.8 N. Remember the spring sets a 0.2 MPa (28 psi) pressure floor and the spring-return travel limits the standard stroke to 150 mm; for a two-way or longer stroke pick the double-acting MG. Mounting options are LB foot, FA flange, CB clevis and SDB pivot, plus I and Y rod knuckles; the fitted magnet supports CMSG/DMSG/EMSG switches. Port is 1/8" on all MSG bores, thread PT.
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 MSG40X75S FAQ
The 40 mm bore gives 439.6 N push at 0.5 MPa and 690.8 N at 0.7 MPa, already net of the return spring. Operating pressure is 0.2-1.0 MPa (28-145 psi), proof pressure 1.5 MPa (215 psi), fluid is air filtered to 40 um, temperature range -20 to +70 C, and speed 50-800 mm/s. The 1/8" port is the same on every MSG 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. On air loss the rod returns rather than holding a load, and the fixed bumper pad only softens the stroke end, it is not a brake. The S in MSG40X75S means a magnet is fitted, so CMSG, DMSG or EMSG switches can signal end of stroke. For a two-directional stroke, the double-acting MG is the alternative.
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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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