Airtac MGC Stainless Steel Mini Cylinder MGC40X400
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC40X400 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MGC Stainless Steel Mini Cylinder MGC40X400
The AirTAC MGC40X400 is a double acting, JIS-standard round-body mini cylinder with a 40 mm bore and a 400 mm stroke, fitted with a variable air cushion at both ends. Unlike the bumper-type MG, the cushion needles let you dial in end-of-stroke deceleration, so this cylinder can run at higher piston speeds and carry heavier moving loads without hammering the covers. At 0.5 MPa it delivers 628.3 N push and 527.8 N pull; at 0.7 MPa that rises to 879.6 N push and 738.9 N pull, with a theoretical maximum of 128.1 kgf at 1.0 MPa. As a rule of thumb, halving the 0.5 MPa push force gives a safe vertical lift figure of roughly 32 kg.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with covers and stainless block riveted and rolled onto it, plus a hard-chrome plated (20 um) 16 mm carbon-steel rod with an M14x1.5 male thread. The two-way piston seal also stores lubricant for long service life. Air supply should be filtered to 40 um, operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, temperature range is -20 to +70 C, and speed range is 30-800 mm/s. Ports are 1/8". Mounting options are FA flange or LB foot, with I and Y rod knuckles available; add the optional S magnet code to enable CMSG, DMSG or EMSG sensors. Note that the cushion only decelerates the stroke end - it is not a lock or brake, so use an external rod lock or pilot check valve if the load must be held on air loss.
Airtac MGC Stainless Steel Mini Cylinder MGC40X400 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC40X400 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Acting type | Double acting + cushion |
| 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 | Variable air cushion, both ends |
| 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 MGC Stainless Steel Mini Cylinder MGC40X400
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGC Stainless Steel Mini Cylinder MGC40X400 Is Used
Conveyor stop and divert
The variable air cushion absorbs the impact of fast-moving cartons at end of stroke, while 628.3 N push at 0.5 MPa stops loaded product cleanly on packaging lines.
Case clamping and eject
Adjustable deceleration protects clamping fixtures at high cycle rates, and the 879.6 N push at 0.7 MPa holds cases firmly through sealing or strapping stations.
Automated slide actuation
The 400 mm stroke drives gates, chutes and small slides at up to 800 mm/s, with the cushion smoothing stops; the SUS304 barrel resists washdown in light-duty food areas.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC40X400 the Right Cylinder?
At 40 mm bore, the MGC40X400 sits in the upper-middle of the MGC range: it pushes 628.3 N at 0.5 MPa, well above the 402.2 N of the 32 mm bore and below the 981.3 N of the 50 mm bore. If you do not need end-of-stroke deceleration, the bumper-type MG offers the same 20-40 mm bores without the cushion; for larger forces step up to MGC50 or MGC63, which share a 20 mm rod. The 400 mm stroke is within the 500 mm maximum standard stroke, so no made-to-order surcharge applies. Choose the FA flange for rigid face mounting or the LB foot for base mounting, and add I or Y rod knuckles if the load introduces slight misalignment. If you need position detection, order the -S magnet variant to accept CMSG, DMSG or EMSG switches - this SKU has no magnet, so no sensor can be fitted. With a 400 mm stroke and a 16 mm rod, watch side loads: keep them minimal or guide the load externally to avoid rod bending over the long span.
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) & 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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGC Stainless Steel Mini Cylinder MGC40X400 FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum is 128.1 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi) and speed is 30-800 mm/s.
Adjustable cushion needles at both ends meter exhaust air to decelerate the piston smoothly near end of travel - it is an adjustable cushion, not a fixed bumper pad, and it does not lock or hold the load on air loss. Sensors require the -S magnet option, which enables CMSG, DMSG or EMSG switches.
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