Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 320mm 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
- Stroke320 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 MAC20X320SCA
Pivot-mounted mechanisms are the natural fit for the MAC20X320SCA: its CA back cover carries an integral pivot eye, so the body swings with the linkage instead of fighting it. Stroke is 320 mm, double acting with a variable cushion at each end, pushing 157 N at 0.5 MPa.
A 320 mm stroke gathers speed, and the adjustable cushion lets you bleed off end-of-stroke shock until motion at up to 800 mm/s stops clean. The riveted stainless barrel with its hard-chrome plated rod stands up to rinsing and humid air. For sizing, treat about 94 N as the continuous working force - a sensible cut from the 157 N push rating.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 320 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 MAC20X320SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×320 | 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 MAC20X320SCA Is Used
Hopper lid tilt on a mixing vat
Flips the stainless lid open through a lever arm, the rear pivot eye following the arc without side load.
Swing-arm reject pusher on a checkweigher
Knocks underweight packs off the belt with a pivoting arm driven across a 320 mm arc.
Counterweighted oven door lift
Raises the door of a small curing oven through a lever linkage, cushioned stops protecting the frame.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCA the Right Cylinder?
Where 157 N at 0.5 MPa is more than needed, a 16 mm bore gives 100.5 N; when loads grow, the 25 mm bore lifts to 245.3 N. With 320 mm of rod exposed, guide the load externally so side forces stay off the 8 mm rod. Remember the piston drifts whenever air is removed or the valve is centred - the cushion damps motion but is not a brake - so specify a rod lock or pilot check valve for held loads. Pair the CA rear pivot with an SDB bracket, or choose FA flange and LB foot mounts for fixed bodies; the built-in magnet suits CMSG and DMSG switches.
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 MAC20X320SCA FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa it is 219.8 N push and 184.7 N pull. Theoretical maximum at 1.0 MPa is 32 kgf. Continuous work of about 94 N is a realistic planning number, and the cylinder runs 0.15-1.0 MPa (22-145 psi).
It adds an integral pivot eye at the back of the cylinder, so the body can swing with a linkage. Keep the front end free with an SDB pivot bracket for a fully pivoting install, or fix the body with an FA flange or LB foot when only the rear should move.
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