Airtac MG Stainless Steel Mini Air Cylinder MG40X450S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG40X450S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 450mm 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
- Stroke450 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 MG40X450S
With a 40 mm bore and a long 450 mm stroke, the MG40X450S is a double acting JIS round-body mini cylinder that pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa (879.6 N / 738.9 N at 0.7 MPa, up to 128.1 kgf theoretical at 1.0 MPa). The barrel is SUS304 stainless steel riveted onto the covers, paired with a 16 mm hard-chrome plated rod and an M14x1.5 male rod thread, so it shrugs off damp, washdown-prone and outdoor conditions far better than painted-steel minis. Because the footprint follows the JIS mini-cylinder standard, it drops onto standard JIS brackets and rod knuckles when you need a spare or a redesign.
In practice, plan on roughly 377 N (about 38 kg of force) of real work at 0.5 MPa rather than the full 628.3 N rating, and for vertical lifts count on about 32 kg with a 2:1 margin. The fitted magnet works with CMSG, DMSG and EMSG switches for end-of-stroke sensing, and the fixed anti-impact bumper pads at each end soften direction changes - they decelerate the stroke end only and are not an adjustable air cushion. Operating range is 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, -20 to +70 C, with 1/8" ports.
Airtac MG Stainless Steel Mini Air Cylinder MG40X450S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG40X450S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 MG40X450S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 MG40X450S Is Used
Bottling line pusher
The 628.3 N push at 0.5 MPa (about 38 kg of usable force) kicks full crates sideways between conveyor lanes, and the SUS304 barrel handles repeated washdown in a wet bottling hall.
Stamping die lift assist
With about 32 kg of vertical lift capacity at a 2:1 margin, the long 450 mm stroke raises small dies and fixtures in a press shop, with CMSG switches confirming top and bottom positions.
Sample handling gate
In a lab automation or packaging test rig, the 1/8" ported MG40X450S swings gates and trays through a 450 mm travel, the fixed bumper pads keeping end-of-stroke impact quiet.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG40X450S the Right Cylinder?
At 628.3 N push at 0.5 MPa this is the strongest base MG bore; the step down is the MG32 (402.2 N push at 0.5 MPa) if your load is lighter, and if you need tunable end-of-stroke deceleration for high speeds or heavy loads, move up to the cushioned MGC, which also reaches 50 mm and 63 mm bores. A 450 mm stroke on a 16 mm rod means side loads and rod bending deserve attention: guide the load externally rather than letting the rod carry lateral force. Remember the MG does not hold position when air is lost - the piston drifts - so add an external rod lock or a pilot check valve for held loads. Mount it with LB foot, FA flange, CB clevis or SDB pivot brackets, and the S in the model code confirms the magnet for CMSG / DMSG / EMSG sensors is already built in.
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 MG40X450S FAQ
At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N; at 0.7 MPa that rises to 879.6 N push and 738.9 N pull. The theoretical maximum is 128.1 kgf at 1.0 MPa. The cylinder runs on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s, and the 450 mm stroke is within the 500 mm standard range for this bore.
Yes - the S code means the magnet is fitted, so CMSG, DMSG or EMSG switches mount directly on the stainless barrel for end-of-stroke detection. The cylinder itself does not lock or hold a load when air is lost; the piston drifts, so use an external rod lock or a pilot check valve where a held position matters. The fixed bumper pads only soften stroke-end impact.
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