Airtac MAC Stainless Steel Mini Air Cylinder MAC40X320SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X320SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 320mm 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
- Stroke320 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 MAC40X320SCA
Long travel is the point of the MAC40X320SCA - 320 mm of stroke from a 40 mm stainless round barrel, still under the 500 mm standard-stroke ceiling for this bore. It pushes 628 N at 0.5 MPa, and the variable air cushion at each end matters even more here, easing 320 mm of momentum into the covers.
Over that span the hard-chrome plated 16 mm rod and rolled stainless tube stay true in humid or outdoor settings where painted bodies corrode. Budget about 377 N for real work at 0.5 MPa - that is a 32 kg vertical lift with the rating halved for a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X320SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X320SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 320 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 MAC40X320SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×320 | 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 MAC40X320SCA Is Used
Cross-lane crate pusher on a roller conveyor
Sweeps crates 320 mm across from the main lane onto a takeaway belt; 628 N at 0.5 MPa moves loaded crates while the cushioned ends land them quietly.
Sliding access door on a powder-coating booth
Opens and closes a 300 mm booth access slide; the stainless barrel tolerates powder dust and humidity, and a CMSG switch confirms full open.
Index shuttle on a two-station unload gantry
Carries a vacuum plate 320 mm between pick and drop stations; at 30 mm/s to 800 mm/s the cushions absorb arrival at either station without crash stops.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X320SCA the Right Cylinder?
Compare first: the 32 mm bore gives 402 N at 0.5 MPa and the 50 mm gives 981 N, so this 40 mm barrel splits them at 628 N. Across 320 mm of travel the 16 mm rod is exposed to side loads, so guide the load externally and keep couplings floating to protect the rod and seals. Lost air means a free-moving rod - a check valve or rod lock holds it. The CA pivot end plus an SDB pivot bracket makes a clean swing mount, and the standard built-in magnet reads through CMSG, DMSG or EMSG switches over the full stroke.
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 MAC40X320SCA FAQ
Push is 628 N and pull 528 N at 0.5 MPa; at 0.7 MPa push reaches 880 N; theoretical maximum is 128 kgf at 1.0 MPa. Stroke is 320 mm standard (bore 40 allows up to 500 mm), ports 1/8", rod 16 mm with M12x1.25 thread, speed 30-800 mm/s, pressure 0.15-1.0 MPa (22-145 psi).
No. Being double acting, the rod moves whenever pressure shifts, so a centred valve or lost air lets the load drift along the 320 mm stroke. The variable air cushions only soften the end stops. Fit a pilot check valve or rod lock where a mid-stroke position must stay put.
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