Airtac MG Stainless Steel Mini Air Cylinder MG40X150S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG40X150S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke150 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 MG40X150S
With a 40 mm bore pushing 628.3 N at 0.5 MPa (879.6 N at 0.7 MPa), the MG40X150S is the strongest standard MG size, built as a double acting JIS round-body mini cylinder with a 150 mm stroke. The SUS304 stainless barrel and hard-chrome plated 16 mm rod shrug off damp, washdown and outdoor conditions that swell painted-steel minis, and the riveted cover-and-block body keeps the whole unit compact. A fixed anti-impact pad at each stroke end softens direction-change impact - it decelerates, it is not an adjustable air cushion.
Because the S code is fitted, CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke sensing with no rework. For sizing: plan on roughly 377 N (about 38 kg) of real work at 0.5 MPa rather than the full 628.3 N rating, or halve the 64 kgf vertical-lift equivalent to lift about 32 kg with a 2:1 margin. Ports are 1/8" on every MG bore, and the JIS mounting interface accepts standard mini-cylinder brackets and rod knuckles.
Airtac MG Stainless Steel Mini Air Cylinder MG40X150S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG40X150S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MG40X150S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 40 | 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 MG Stainless Steel Mini Air Cylinder MG40X150S Is Used
Carton press-down station
The 628.3 N push at 0.5 MPa seats flaps or presses cartons on a packing line, with the 150 mm stroke clearing the stack for loading. The stainless barrel tolerates daily wipe-down.
Small-parts press fit
Bushings or bearings press into housings under about 377 N of usable force at 0.5 MPa - enough for light interference fits in fixture building, with the bumper pad softening the return.
Gate or clamp with position feedback
The built-in magnet drives CMSG or DMSG switches at both ends, so a PLC confirms the clamp is fully open and closed - useful on assembly cells where a missed clamp jams the cycle.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG40X150S the Right Cylinder?
At 40 mm this is the top of the MG range: 628.3 N push at 0.5 MPa versus 402.2 N for the 32 mm bore below it. If 628 N is far more than the job needs, step down to MG32X150S; if you need adjustable cushioning for high speed or heavy moving loads, move to the MGC series, which extends to 50 and 63 mm bores. Note that a plain MG does not hold position when air is lost - the rod drifts - so add an external rod lock or a pilot check valve for a held load.
This SKU carries the built-in magnet, so CMSG / DMSG / EMSG switches work out of the box. Mount it with LB foot, FA flange, CB clevis or SDB pivot brackets, and fit I or Y rod knuckles on the 16 mm male thread (M14x1.5). At 150 mm stroke keep side loads off the rod; guide the load externally if the tooling overhangs.
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 MG40X150S 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. Theoretical maximum is 128.1 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, port 1/8", rod 16 mm with M14x1.5 male thread.
Yes - the S in the model code means a piston magnet is built in, so CMSG, DMSG or EMSG reed/electronic switches mount directly on the barrel. Without the magnet option no switch would detect the piston. The fixed bumper pads at the stroke ends only soften impact; they are not an adjustable cushion and do not lock the rod in place.
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