Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 280mm 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.
- BoreØ20 mm
- Stroke280 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA
A round-body stainless mini cylinder built for longer runs, the MAC20X280SCA delivers 157 N of push and 131.9 N of pull at 0.5 MPa over a 280 mm stroke. It is double acting - air extends and retracts the rod - and a variable cushion at each end soaks up shock, so travel can run at up to 800 mm/s without hammering the aluminium covers. The riveted stainless barrel and hard-chrome plated 8 mm rod shrug off washdown and damp shop air that swells painted-steel minis.
Every unit carries a built-in magnet as standard, so a CMSG, DMSG or EMSG switch clips straight on for end-of-stroke sensing with no special-order piston. Keep a working margin and the 157 N push gives you roughly 94 N of real work at 0.5 MPa - enough to shift a 3 kg carton the length of a small conveyor lane.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 280 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MAC20X280SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×280 | 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 MAC20X280SCA Is Used
Reject gate pivot
Swings a reject flap on a bottling line: hung from its CA pivot cover, the cylinder flips a light gate through 280 mm with 157 N behind it.
Carton lane diverter
Pushes undersized cartons into a lower lane on a packing conveyor, the adjustable cushion damping every stop at lane end.
Gate feedback loop
A CMSG switch on the standard magnet confirms the gate has fully opened before the filler is allowed to cycle again.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X280SCA the Right Cylinder?
Bore 20 sits between the 16 (100.5 N push at 0.5 MPa) and the 25 (245.3 N), so step up a bore if your load needs more than about 150 N or down if it stays under 100 N. A plain MAC does not hold position when air drops - the rod drifts - so fit a rod lock or pilot check valve if the load must stay put. The CA pivot back cover pairs naturally with an SDB pivot bracket for swing motion; FA flange or LB foot mounts suit fixed frames. At 280 mm, keep side-load off the rod and guide the load externally rather than bending the 8 mm piston rod.
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 MAC20X280SCA FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa those figures rise to 219.8 N push and 184.7 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. Supply filtered air at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and the rod travels 30-800 mm/s. It is double acting with a variable air cushion at both ends.
The barrel is a high-precision stainless tube with aluminium covers riveted and rolled onto it, while the carbon-steel rod carries a 20 um hard-chrome plating. Unlike painted-steel or bare-aluminium minis, that combination resists mild corrosion and routine washdown, which matters in food, packaging and outdoor cells.
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Covers non-human-caused product damage.
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