Airtac MG Stainless Steel Mini Air Cylinder MG40X50
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG40X50 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke50 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 MG40X50
With the largest bore in the MG range, the MG40X50 delivers 628.3 N push and 527.8 N pull at 0.5 MPa (879.6 N / 738.9 N at 0.7 MPa) over a short 50 mm stroke, making it a compact double acting actuator for tight clamp-and-press positions. The riveted round body pairs a 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. A fixed anti-impact bumper pad at each stroke end softens the direction change; it decelerates only and is not an adjustable air cushion.
Because the MG follows the JIS mini-cylinder standard, its footprint drops onto standard JIS brackets and rod knuckles, which keeps spares interchangeable across your machine park. For sizing in practice, expect roughly 377 N of usable work at 0.5 MPa, and plan vertical lifts around 32 kg with a 2:1 margin. Running spec: 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, -20 to +70 C, air filtered to 40 um, 1/8" ports, PT thread.
Airtac MG Stainless Steel Mini Air Cylinder MG40X50 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG40X50 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MG40X50
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 40 | 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 MG Stainless Steel Mini Air Cylinder MG40X50 Is Used
Pneumatic press fixture
The 628.3 N push at 0.5 MPa (about 880 N at 0.7 MPa) suits a short-stroke bench press riveting or staking small brackets, where the 50 mm stroke covers the approach and the bumper pad softens bottom-out.
Carton clamp on a packing head
A stainless SUS304 barrel survives the damp, floury air around a food-grade carton sealer, clamping flaps with roughly 377 N of usable force at 0.5 MPa.
Gate pusher on a washdown conveyor
Near a bottling line rinse station, the hard-chrome rod and stainless body resist splash, pushing off-cuts or diverting totes across a 50 mm gap at 30-800 mm/s.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG40X50 the Right Cylinder?
At 40 mm bore this is the top of the MG ladder: 628.3 N push at 0.5 MPa versus 563.0 N on the 32 mm bore, so step up when a clamp needs the extra margin. If you need more force still, move to the cushioned MGC series, which extends the range to 50 and 63 mm bores. The 50 mm stroke suits short-jaw clamps and ejector positions; on longer strokes watch side load on the 16 mm rod. Mount with LB foot, FA flange, CB clevis or SDB pivot, and add I or Y knuckles on the rod. This SKU has no S code, so no magnet is fitted and CMSG / DMSG / EMSG switches cannot be used - order the -S version if you need position sensing. Note that with the valve centred or air lost the piston drifts freely; for a held load add an external rod lock or a pilot check valve.
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 MG40X50 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. Bore is 40 mm, stroke 50 mm, rod 16 mm with M14x1.5 male thread, and every port is 1/8". Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
Not on this SKU. The MG40X50 has no built-in magnet, and the CMSG, DMSG and EMSG switches only work on cylinders ordered with the S magnet code. Also remember the fixed bumper pads only soften the stroke end - they are not a cushion or a brake, and the rod will drift if air is lost.
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