Airtac MG Stainless Steel Mini Air Cylinder MG40X100S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG40X100S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionFixed anti-impact bumper pads
About the Airtac MG Stainless Steel Mini Air Cylinder MG40X100S
With the largest bore in the MG family, the MG40X100S delivers 628.3 N of push force at 0.5 MPa (879.6 N at 0.7 MPa) from a compact round body. This double acting JIS-standard mini cylinder uses a riveted SUS304 stainless barrel with a hard-chrome plated 16 mm rod, so it shrugs off washdown and damp shop air that swells painted-steel minis. Air extends and retracts the rod; a fixed anti-impact bumper pad at each stroke end softens the direction change, though it decelerates only and is not an adjustable cushion.
Because the magnet is built in (-S code), CMSG, DMSG or EMSG switches clamp straight onto the barrel for end-of-stroke signalling with no retrofit. Practical sizing: at 0.5 MPa plan on roughly 377 N of usable work force, which is about 38 kg lifted vertically with a 2:1 margin. Ports are 1/8" on all four MG bores, and the JIS mounting footprint accepts standard mini-cylinder brackets and I or Y rod knuckles, so spares swap in without redesign.
Airtac MG Stainless Steel Mini Air Cylinder MG40X100S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG40X100S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 500 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 | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MG Stainless Steel Mini Air Cylinder MG40X100S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MG Stainless Steel Mini Air Cylinder MG40X100S Is Used
Carton press-down station
The 628.3 N push at 0.5 MPa seats flaps and closes cartons on a packaging line, with the 100 mm stroke clearing the stack for loading.
Position-verified clamping
Built-in magnet plus CMSG or DMSG switches confirm the jaw is fully closed on a fixture before the next cycle starts.
Battery-lift gate actuator
In a warehouse gate or lift-assist arm, the 40 mm bore raises roughly 38 kg vertically with a 2:1 margin, and the SUS304 barrel tolerates washdown areas.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG40X100S the Right Cylinder?
At 40 mm bore this is the top of the standard MG range: 628.3 N push / 527.8 N pull at 0.5 MPa. If your load needs under about 402 N, the MG32X100S saves space and air; if you need more force or an adjustable cushion for high-speed stops, step up to the MGC series, which extends to 50 mm and 63 mm bores. Stroke 100 mm sits well inside the 500 mm standard range, so no made-to-order lead time applies.
Mount on LB feet, an FA flange, a CB clevis or an SDB pivot bracket, and add I or Y knuckles on the M14x1.5 rod thread as the job demands. Note that when air is lost the piston drifts freely - the bumpers only soften the stroke ends - so fit an external rod lock or a pilot check valve if the load must stay put.
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 0.15 – 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 MG Stainless Steel Mini Air Cylinder MG40X100S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa, 879.6 N push and 738.9 N pull. The theoretical maximum is 128.1 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa = 22-145 psi with a 1.5 MPa = 215 psi proof rating, and speed runs 30-800 mm/s.
Yes - the S in the model code means the piston magnet is factory-fitted, so CMSG, DMSG or EMSG reed switches mount directly on the stainless barrel. The fixed bumper pads at each stroke end only decelerate the piston; they are not an adjustable air cushion and do not hold a load when air is removed.
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