Airtac MGC Stainless Steel Mini Cylinder MGC40X350S
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC40X350S is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 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 MGC40X350S
The AirTAC MGC40X350S is a JIS-standard round-body mini cylinder, double acting, with a variable air cushion at both stroke ends. The 40 mm bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa (72.5 psi), rising to 879.6 N push at 0.7 MPa (101.5 psi), with a theoretical maximum of 128.1 kgf at 1.0 MPa (145 psi). The adjustable cushion needle lets you dial in smooth deceleration near each end of travel, so this cylinder handles higher piston speeds and heavier moving loads than the bumper-type MG without hammering the covers. The 350 mm stroke sits comfortably inside the 500 mm maximum standard stroke for this bore, so it ships as a standard catalog item.
Construction follows the JIS mini-cylinder pattern: a SUS304 stainless barrel with covers and stainless block riveted and rolled onto it, no tie-rods and no extruded profile. The 16 mm rod is hard-chrome plated to 20 um on carbon steel, and the two-way piston seal also stores lubricant. Because the S suffix is fitted, a magnet is built into the piston and CMSG, DMSG or EMSG switches can be mounted for position feedback. One caution: the air cushion only decelerates the stroke end, it is not a lock or brake, so the rod will not hold position on air loss. For a held or vertical load, add an external rod lock or pilot check valve. As a rule of thumb, treat about 0.6 of the push force as a safe working load, which for this model is roughly 377 N, or about 38 kg in vertical lift terms.
Airtac MGC Stainless Steel Mini Cylinder MGC40X350S Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC40X350S |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MGC40X350S
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MGC40X350S Is Used
High-speed conveyor stop and divert
With a 30-800 mm/s speed range and a variable air cushion at both ends, the MGC40X350S can stop moving cartons or totes at speed without the covers taking the impact, making it a good fit for long-stroke stopper and divert positions on packaging lines.
Case pusher on packaging machinery
The 628.3 N push force at 0.5 MPa (72.5 psi) moves loaded cases over a 350 mm stroke, while the adjustable cushion decelerates the load smoothly at each end, protecting the machine frame during fast, repetitive cycles.
Automated assembly slide actuation
In jigs and fixtures where parts are clamped or ejected at speed, the double acting 40 mm bore gives 879.6 N at 0.7 MPa (101.5 psi), and the fitted magnet with CMSG or DMSG switches confirms extend and retract positions to the PLC.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC40X350S the Right Cylinder?
At 40 mm bore, the MGC40X350S sits in the middle of the cushioned MGC range: it pushes 628.3 N at 0.5 MPa (72.5 psi), well above the 402.2 N of the 32 mm bore and below the 981.3 N of the 50 mm bore. If you need more force with the same adjustable cushion, step up to MGC50 or MGC63; if you need less, the MGC32 is the next size down, and the MGC20 is the smallest cushioned option. For 20 to 40 mm bores where end-of-stroke deceleration is not needed, the plain bumper MG is the lower-cost alternative. The 350 mm stroke is standard (up to 500 mm for this bore), and non-standard strokes up to 800 mm are made to order. Mount with the FA flange or LB foot, and add I or Y rod knuckles if the tooling needs a swivel joint. The fitted magnet accepts CMSG, DMSG or EMSG switches. At this longer stroke, keep side load off the rod: guide the load externally, since the 16 mm hard-chrome rod is not intended to carry bending moments.
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 MGC40X350S FAQ
At 0.5 MPa (72.5 psi) it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa (101.5 psi) it pushes 879.6 N and pulls 738.9 N. The theoretical maximum at 1.0 MPa (145 psi) is 128.1 kgf. For sizing, use about 0.6 of the push force as a safe working load, roughly 377 N or about 38 kg for vertical lift.
The cushion needle at each end is adjustable, so you can tune the air restriction to decelerate the piston smoothly near end of travel, which suits higher speeds and heavier moving loads than the fixed bumper MG. The cushion is not a lock or brake: on air loss the rod will not hold position, so use an external rod lock or pilot check valve for a held or vertical load.
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