Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMH
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMH is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 300mm 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
- Stroke300 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 MAC20X300SCMH
Long travel in a compact round body: the MAC20X300SCMH reaches 300 mm on a 20 mm bore and finishes on a CM round-end back cover. Air drives the rod both ways, the variable cushion at each end tames the stop, and 0.5 MPa yields 157 N push against 131.9 N pull.
With a stainless tube, riveted aluminium covers and a hard-chrome plated rod, this mini shrugs off the humidity that ruins painted-steel cylinders in washdown corners. Vertically, 157 N equals about 16 kg of theoretical lift; keeping a 2:1 margin, treat it as a dependable 8 kg vertical lift. The magnet is factory fitted, so CMSG, DMSG or EMSG sensors mount without touching the piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMH Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMH |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MAC20X300SCMH
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | 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 MAC20X300SCMH Is Used
Dryer door actuation
Opens and closes the door of a benchtop powder coating dryer over its full 300 mm travel, the 157 N push swinging the insulated panel.
Filler head elevation
Lifts a filler head assembly 300 mm for tank changeover on a small bottling rig, treated as an 8 kg vertical lift with margin.
Carousel index pusher
Pushes trays around an indexing rotary table on a bakery line, the long stroke clearing the full tray width in one move.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMH the Right Cylinder?
This 20 mm bore generates 157 N push at 0.5 MPa - double the 16 mm bore's 100.5 N and about 88 N short of the 25 mm bore's 245.3 N. Because the piston cannot hold position once air is removed or the valve centres, fit a rod lock or pilot check valve wherever the 300 mm travel carries a load that must stay put. The CM round-end back cover accepts a pivot pin, while FA flange, LB foot and SDB brackets handle fixed frames. For a stroke this long, align the cylinder square to the load and support it externally: side load on the 8 mm rod over 300 mm of travel is the main cause of premature seal wear.
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 MAC20X300SCMH FAQ
At 0.5 MPa: 157.0 N push, 131.9 N pull. At 0.7 MPa: 219.8 N push, 184.7 N pull. Theoretical peak: 32.0 kgf at 1.0 MPa. The 300 mm stroke is within the 500 mm standard range, and ports are 1/8" on this 20 mm bore.
Keep the cylinder axis square to the load and take side forces on external guides, since the 8 mm rod carries only its own bushings. The stainless barrel and hard-chrome plating handle washdown and humidity, the built-in magnet feeds CMSG, DMSG or EMSG switches for mid-stroke sensing, and the cushion needle screws should be opened before each first run.
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