Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SU 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 MAC20X300SU
A 300 mm reach in a 20 mm stainless tube - the MAC20X300SU handles long-slide duties where a compact body matters. Double acting with a variable air cushion on both strokes, it pushes 157 N and pulls 131.9 N at 0.5 MPa. Vertically, that extend force corresponds to about 16 kg, so with a 2:1 margin it lifts roughly 8 kg of real parts.
The U flat-end back cover bolts directly to fixed plates, and the riveted aluminium covers keep the rolled stainless body sealed against dust and splash. Each piston carries a standard magnet for CMSG / DMSG / EMSG reed switches - no special-order piston needed.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SU |
|---|---|
| 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 MAC20X300SU
| 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 MAC20X300SU Is Used
Case sweep at the sealer
Sweeps formed cartons 300 mm onto the side lane; 157 N extend force moves loaded cases on plain 0.5 MPa plant air.
Product gate diverter
A fixed plate behind the flat U back cover holds the body square while the rod swings a diverter gate across the line.
Vertical lift for small totes
With about 8 kg of vertical lift at a 2:1 margin, it raises tote stoppers and light risers through the 300 mm travel.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SU the Right Cylinder?
For sizing, a 16 mm bore reaches only 100.5 N at 0.5 MPa while a 25 mm bore jumps to 245.3 N - the 20 mm sits between them at 157 N. Because the cylinder is double acting with no lock, a centred valve lets the rod drift; fit a rod lock or pilot check valve where holding matters. Ports are 1/8" in PT by default, with G and NPT variants in the ordering code.
The U flat-end back cover plus optional FA flange, LB foot or SDB pivot bracket cover most frames, and the standard magnet drops CMSG / DMSG / EMSG switches on. On this 300 mm stroke, guide the load or keep thrust in line with the 8 mm rod to avoid side-load wear over the long travel.
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 MAC20X300SU FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa. At 0.7 MPa expect 219.8 N and 184.7 N, and the theoretical ceiling is roughly 32 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi), air filtered to 40 um, at 30-800 mm/s.
Yes - the round barrel is stainless steel, the 8 mm rod is carbon steel hard-chrome plated to 20 um, and the aluminium covers are rolled on for a sealed body. That combination resists mild corrosion and washdown better than painted minis in wet or outdoor spots.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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