Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 450mm 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
- Stroke450 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 MAC20X450SU
Long travel in a slim package: the MAC20X450SU runs a 450 mm stroke on a 20 mm bore, pushing 157 N at 0.5 MPa and pulling 131.9 N on the return. The variable air cushion at both ends lets you bleed off end-of-stroke shock, so a fast gate or heavy slide does not hammer the aluminium covers at full extension.
The barrel is stainless steel rolled tight against aluminium covers with a hard-chrome plated 8 mm rod, a combination that shrugs off washdown and humidity far better than painted-steel minis. Count on roughly 94 N of practical working force at 0.5 MPa rather than the full rating, and the magnet already inside accepts CMSG, DMSG or EMSG switches with no special piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 450 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 MAC20X450SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×450 | 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 MAC20X450SU Is Used
Sliding guard gate
Raises a 5 kg stainless guard gate on a packaging machine through the full 450 mm stroke, staying inside the roughly 8 kg vertical lift figure at 0.5 MPa.
Reject pusher arm
Sweeps off-spec cartons off a long conveyor lane; the 157 N push at 0.5 MPa clears the belt in one stroke and the cushion quiets the return.
Camera mast drop
Lowers an inspection camera mast into a deep fill-line hopper, reaching travel distances the 45 mm short-stroke models cannot cover.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SU the Right Cylinder?
At 157 N of push at 0.5 MPa this bore sits between the 16 mm MAC16 (100.5 N) and the 25 mm MAC25 (245.3 N); step up to 25 mm if your load needs more than about 94 N of real work. With 450 mm of travel, keep rod side-load low and guide the load externally - the 8 mm rod will bend under lateral forces over that span. Mount with FA flange, LB foot or SDB pivot, and pair the U flat-end cover with an I or Y rod knuckle for linkages. Note the piston drifts when air is lost - add a rod lock or pilot check valve where a held position matters.
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 MAC20X450SU FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa those rise to 219.8 N and 184.7 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The 1/8" ports take clean, dry air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), and speed can be set anywhere from 30-800 mm/s.
Back both cushion needle screws fully off, run the cylinder slowly through its stroke, then close them gradually until end-of-stroke knock disappears. This keeps the 450 mm travel smooth even at high speed and protects the covers from shock loads.
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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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