Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCM 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 MAC20X450SCM
Corrosion resistance across nearly half a metre is the selling point here: the MAC20X450SCM runs a 450 mm stroke from a 20 mm bore in a stainless barrel riveted to aluminium covers, with a 20 um hard-chrome plated rod that stands up to splash and humidity. Double acting by design, air extends and retracts the rod, while the variable cushions at each end are tuned with needle screws to soak up end-of-stroke shock at speeds anywhere in the 30-800 mm/s band.
Figures to quote: 157 N push and 132 N pull at 0.5 MPa, of which about 94 N is a sane working ceiling. Converted for lifting, 157 N supports roughly 16 kgf, so a 2:1 margin leaves about 8 kg of vertical capacity. The piston magnet is factory-fitted as standard, so CMSG, DMSG or EMSG switches mount anywhere along the tube with no options to order.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCM |
|---|---|
| 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 MAC20X450SCM
| 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 MAC20X450SCM Is Used
Pick-station part ejector
Kicks a finished small part out of a nest at the end of an assembly cell; the 450 mm stroke reaches deep nests and 157 N at 0.5 MPa ejects parts under 8 kg with room to spare.
Textile machine thread-rail shifter
Shifts a yarn-guide rail in a humid weaving shed where painted cylinders rust within months; the stainless tube and chromed rod take the moisture in stride.
QA bench sampling pusher
On a warehouse quality bench it pushes a carton sample along a 400 mm check lane, with DMSG switches marking the start and end of each push.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCM the Right Cylinder?
Frame the choice by force first: 100.5 N at 0.5 MPa from the 16 mm bore suits very light duty, 245.3 N from the 25 mm bore covers heavier slides, and this 20 mm bore's 157 N sits between. The CM round-end rear cover offers a tidy fixed mount through a bracket, complemented by FA flange, LB foot or SDB pivot accessories. Note that neither the cushions nor anything else on this cylinder holds a load - remove supply and the rod moves with the load, so pair it with a rod lock or pilot check valve where a position must persist. With 450 mm of thin rod in play, fit external guides so bending loads never reach the 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 MAC20X450SCM FAQ
Push 157 N, pull 132 N at 0.5 MPa; push 220 N, pull 185 N at 0.7 MPa; theoretical maximum 32 kgf at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, port 1/8 in., air filtered to 40 um.
Yes - the rolled stainless tube with a hard-chrome plated rod resists the splash, condensation and mild washdown chemicals that pit painted-steel and plain aluminium mini cylinders, which is why this family holds up in food, outdoor and humid-plant duty.
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