Airtac MGC Stainless Steel Mini Cylinder MGC40X50
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC40X50 is a genuine double acting + cushion 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 + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MGC Stainless Steel Mini Cylinder MGC40X50
The AirTAC MGC40X50 is a JIS-standard round-body mini cylinder, double acting, and it carries a variable air cushion at both stroke ends. Turn the cushion needle in and the piston decelerates smoothly before it reaches the cover, so this 40 mm bore can run at higher piston speeds or move heavier loads than the fixed-bumper MG without hammering the end covers. Air pushes the piston both ways: 628.3 N push and 527.8 N pull at 0.5 MPa (73 psi), rising to 879.6 N push at 0.7 MPa (102 psi), with a theoretical maximum of 128.1 kgf at 1.0 MPa. In round numbers the 0.5 MPa push force is about 64 kgf, so a safe working load of roughly 38 kg is a sensible starting point for sizing.
Construction follows the MG family recipe: a SUS304 stainless barrel with covers and stainless block riveted and rolled onto it, plus a hard-chrome plated 20 um carbon-steel rod (16 mm here, male thread M14x1.5) and a two-way piston seal that also stores lubricant. Air supply is filtered to 40 um, operating pressure spans 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, temperature range is -20 to +70 C, and speed runs 30-800 mm/s. Ports are 1/8" with PT thread (G and NPT optional). Mounting is FA flange or LB foot, with I and Y rod knuckles available. This unit has no magnet, so no position sensor can be fitted; order the -S version to enable CMSG, DMSG or EMSG switches.
Airtac MGC Stainless Steel Mini Cylinder MGC40X50 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC40X50 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MGC40X50
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 MGC40X50 Is Used
High-cycle push station
The variable air cushion lets this 40 mm bore run near the top of its 30-800 mm/s range on a 50 mm stroke, decelerating the piston smoothly instead of hammering the covers at 628.3 N push force.
Small assembly press
With 879.6 N push at 0.7 MPa (102 psi) and adjustable end-of-stroke damping, the MGC40X50 suits light pressing, staking and inserting where the load must arrive gently at the workpiece.
Packaging divert and eject
Double acting control in both directions plus cushioned stops make this cylinder a clean fit for ejecting or diverting cartons on packaging lines, with an -S magnet option for position feedback.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC40X50 the Right Cylinder?
At 40 mm bore the MGC40X50 sits in the upper-middle of the cushioned MGC range: 628.3 N push at 0.5 MPa (73 psi) puts it above the 32 mm bore (402.2 N) and below the 50 mm bore (981.3 N), while the 63 mm bore (1557.9 N) tops the range. If your speed is low and the load is light, the plain bumper MG in the same bore is the no-cushion alternative for 20-40 mm; choose the MGC when you want adjustable end-of-stroke deceleration. The 50 mm stroke is well inside the 500 mm maximum standard stroke, and non-standard strokes up to 800 mm are made to order. Pick FA flange or LB foot mounting, add I or Y rod knuckles if the tooling needs them, and specify the -S magnet if you want CMSG/DMSG/EMSG sensing. With only a 50 mm stroke, keep side loads off the rod and use a guide if the tooling overhangs, and remember the cushion only decelerates the stroke end: it is not a lock, so an external rod lock or pilot check valve is needed for a held load.
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 MGC40X50 FAQ
At 0.5 MPa (73 psi) it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa (102 psi) push rises to 879.6 N and pull to 738.9 N. The theoretical maximum is 128.1 kgf at 1.0 MPa. That 0.5 MPa push equals about 64 kgf, so roughly 38 kg is a practical safe vertical load once a 0.6 service factor is applied.
Both stroke ends have a variable air cushion: a needle valve you adjust to slow the piston near the cover, which is why the MGC tolerates higher speeds and heavier moving loads than the fixed-bumper MG. It is not a brake, so use an external rod lock or pilot check valve to hold a load on air loss. Sensors (CMSG/DMSG/EMSG) need the -S magnet version; this SKU has none. Mounting is FA flange or LB foot with I/Y rod knuckles, on a JIS round-body SUS304 stainless barrel with a hard-chrome 16 mm rod and 1/8" ports.
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