Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCA 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 MAC20X450SCA
A pivoting long-stroke actuator: the MAC20X450SCA couples a 450 mm stroke to a CA rear pivot cover, so the cylinder can swing with a lever or lid instead of straining against side load. The round stainless tube is rolled onto the aluminium head and cap, the 8 mm rod is hard-chrome plated carbon steel, and a variable air cushion at both ends - double acting throughout - lets you ease the deceleration of whatever the rod moves.
Output at 0.5 MPa is 157 N extending and 132 N retracting; keep actual work near 94 N and the cylinder will live a long life. The same push equates to about 16 kgf, meaning roughly 8 kg of vertical lift with a 2:1 safety factor. Sensor-ready from the factory, its standard magnet triggers CMSG or DMSG switches anywhere along the travel.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCA |
|---|---|
| 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 MAC20X450SCA
| 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 MAC20X450SCA Is Used
Oven-door linkage on a bakery rack
The CA rear pivot lets the cylinder follow the arc of a swing-up oven door over 450 mm, and the cushion eases it shut instead of banging the door seal.
Greenhouse vent arm
Opens ridge vents in humid, fertiliser-laden air; the stainless barrel resists the corrosion that swells painted mini cylinders, and about 8 kg of vent lift is well within capacity.
Tray tipper on a small conveyor
Tilts a light tote tray to empty small parts; 157 N at 0.5 MPa is ample for the pivot torque and EMSG switches confirm the tipped and home positions.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X450SCA the Right Cylinder?
Downsize to the 16 mm bore (100.5 N at 0.5 MPa) for very light lids, or upsize to 25 mm (245.3 N) for heavier trays; both belong to this same round-body family. The CA pivot suits swing arms and lid linkages, while FA flange, LB foot or SDB pivot brackets cover fixed frames. Do not expect the cushion to act as a brake - with the valve centred or air lost, this double-acting cylinder drifts freely, so a pilot check valve or rod lock is the right fix for held positions. At nearly half a metre of extension, side loads are the enemy of the 8 mm rod, so hinge or guide the load.
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 MAC20X450SCA FAQ
At 0.5 MPa: 157 N push, 132 N pull. At 0.7 MPa: 220 N push, 185 N pull. Theoretical maximum force is 32 kgf at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, 1/8 in. port.
It replaces the flat rear cap with a pivot boss, so the cylinder body can swing with a lever, lid or linkage; for rigid frames keep the standard flat cover and add an FA flange or LB foot instead.
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