Airtac MGC Stainless Steel Mini Cylinder MGC40X350
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC40X350 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 MGC40X350
The AirTAC MGC40X350 is a JIS-standard round-body mini cylinder, double acting, with a 40 mm bore and a 350 mm stroke. Unlike the bumper-type MG, this build carries a variable air cushion at both stroke ends: turn the cushion needle to dial in smooth deceleration of the piston near end of travel, so the cylinder can run at higher speeds and move heavier loads without hammering the covers. At 0.5 MPa it delivers 628.3 N push and 527.8 N pull, rising to 879.6 N push at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa. Operating pressure spans 0.15 to 1.0 MPa (22 to 145 psi) with a 1.5 MPa (215 psi) proof pressure, and piston speed covers 30 to 800 mm/s.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with covers and stainless block riveted and rolled onto it, no tie rods and no extruded profile, plus a hard-chrome plated (20 um) carbon-steel rod of 16 mm diameter with an M14x1.5 male thread. The two-way piston seal also stores lubricant, and the air supply should be filtered to 40 um. Working temperature is -20 to +70 C. As a computed buyer insight, a safe vertical lifting load is roughly 0.6 of the 0.5 MPa push force, i.e. about 38 kg (628.3 N / 9.81 = 64 kgf, halved for vertical duty and derated). Mounting is FA flange or LB foot with I and Y rod knuckles available, and the PT thread port size for bore 40 is 1/8".
Airtac MGC Stainless Steel Mini Cylinder MGC40X350 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC40X350 |
|---|---|
| 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 MGC40X350
| 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 MGC40X350 Is Used
High-speed parts ejection
The variable air cushion absorbs the piston energy at both stroke ends, letting this 40 mm bore cylinder cycle fast (up to 800 mm/s) over its 350 mm stroke without end-of-travel impact damage.
Conveyor pusher and diverting
With 628.3 N push at 0.5 MPa (about 376 N safe working force), the MGC40X350 pushes cartons or totes off a line smoothly, and the adjustable cushion stops the load gently at full extension.
Light press and forming stations
Up to 879.6 N push at 0.7 MPa suits small staking, marking and assembly presses where the cushion decelerates the ram before it meets the workpiece fixture.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC40X350 the Right Cylinder?
Size the MGC40X350 both ways: at 0.5 MPa its 628.3 N push sits between the 32 mm bore (402.2 N) and the 50 mm bore (981.3 N), so step up to 50 if your load needs more than about 376 N of safe working force (0.6 x 628.3 N) or down to 32 if you are oversizing. For bores 20 to 40 the bumper-type MG is the no-cushion alternative; choose the MGC when your stroke ends need adjustable deceleration, for example at the upper end of the 30 to 800 mm/s speed range or with heavier moving masses. The 350 mm stroke is within the 500 mm maximum standard stroke for this bore, so it ships as a standard item; strokes up to 800 mm are made to order. At this stroke length, check rod side load and consider external guidance for the payload. Mount with the FA flange or LB foot, add I or Y rod knuckles if the tooling needs a pivot-free clevis-style joint, and order the -S magnet option if you want CMSG, DMSG or EMSG position sensing; without the magnet no sensor can be fitted. Port thread is PT as standard, with G and NPT options.
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 MGC40X350 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. For a safe vertical lift, apply the 0.6 rule of thumb to the 0.5 MPa push force, giving roughly 38 kg.
The cushion is adjustable, not a fixed pad: a needle valve at each stroke end throttles the exhaust air to decelerate the piston smoothly. It only cushions end of travel, so the MGC40X350 does not lock or hold position on air loss; use an external rod lock or pilot check valve for a held load. The SUS304 stainless barrel and hard-chrome rod keep it corrosion resistant, and the -S magnet option enables CMSG, DMSG or EMSG sensors.
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