Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA
A 400 mm stroke on a 40 mm bore gives this MAC cylinder the reach for conveyor stoppers, gates and long sliding moves, pushing 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa while variable air cushions at each end soak up end-of-stroke shock. It is double acting - air does the work in both directions.
The CA pivot back cover takes swinging mounts directly, the stainless rolled barrel and hard-chrome rod handle damp or washed-down corners, and the fitted magnet lets CMSG, DMSG or EMSG switches report end positions with nothing extra to order. As a rule of thumb the bore lifts about 64 kg vertically, or 32 kg if you want a 2:1 safety margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
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 MAC Stainless Steel Mini Air Cylinder MAC40X400SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA Is Used
Pallet stopper
Stops and releases pallets on a gravity conveyor flow line, cushioning each 400 mm approach so the mechanism does not slam.
Hopper gate
Swings open a discharge gate on a powder handling hopper, with the CA pivot back cover taking the rotation without extra brackets.
Sortation brake
Acts as a pivoting brake arm on a parcel sortation loop, pressing against passing totes with 628 N of force at 0.5 MPa.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA the Right Cylinder?
If 628.3 N at 0.5 MPa is marginal for the job, a 50 mm bore makes 981.3 N; if it is generous, a 32 mm bore at 402.2 N saves money and air. Port 1/8", rod thread M12x1.25, standard strokes to 500 mm. The cushion dials out end-of-stroke shock but parks nothing: when air is lost or the valve centres, the piston drifts, so add a rod lock or pilot check valve for held loads. The CA pivot cover pairs with FA flange, LB foot or SDB pivot mounts and I or Y knuckles, and the standard magnet feeds CMSG, DMSG or EMSG switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
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 screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCA FAQ
The MAC40X400SCA pushes 628.3 N and pulls 527.8 N at 0.5 MPa; at 0.7 MPa that becomes 879.6 N push and 738.9 N pull, peaking at a theoretical 128.1 kgf. Run it on 0.15-1.0 MPa (22-145 psi) of 40 um filtered air; proof pressure is 1.5 MPa (215 psi).
No - the rod drifts freely when supply is lost or the valve centres, because the air cushion only dampens the last part of the stroke, it never locks. For pallets or gates that must stay parked, fit a rod lock cylinder or add a pilot-operated check valve to the port.
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