Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCM 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 MAC20X320SCM
Twenty extra millimetres of travel over the 310 version, same slim round body: the MAC20X320SCM reaches 320 mm, runs double acting with variable cushions at both ends and pushes 157 N at 0.5 MPa, 219.8 N at 0.7 MPa.
Splash, steam and humid air are where the stainless tube and hard-chrome rod outlast painted minis, and the CM round-end cover takes a pivot pin for linkage work. The magnet is built in from the factory, so a CMSG or EMSG switch adds end-of-stroke feedback with no rework. Lift-wise, the bore manages about 8 kg vertically at 0.5 MPa with a 2:1 margin - the theoretical figure is 16 kg.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCM |
|---|---|
| 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 MAC20X320SCM
| 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 MAC20X320SCM Is Used
Case ejector at a packer outfeed
Pushes formed cartons sideways off the chain into a case packer across the full 320 mm face.
Probe carriage on a test rig
Travels a 320 mm axis on linear guides while the magnet signals home position to the controller.
Tote lifter on a small gantry
Raises light totes between bench and rack levels on guided posts, cushioned landings protecting the frame.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X320SCM the Right Cylinder?
Step down to a 16 mm bore (100.5 N push at 0.5 MPa) for lighter gates, or up to 25 mm (245.3 N) for heavier tooling. Long strokes like this one need external guiding - keep side loads off the 8 mm rod or seal wear will show early. Air off or valve centred, the rod moves freely, so a check valve or rod lock is the answer where a load must stay put. 1/8 inch ports come as PT with G or NPT selectable in the code; LB foot and FA flange mounts anchor the body, and speed spans 30-800 mm/s at 0.15-1.0 MPa (22-145 psi).
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 MAC20X320SCM FAQ
No. Force stays constant along the stroke: 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, peaking at a theoretical 32 kgf at 1.0 MPa.
The high-precision stainless tube is rolled onto aluminium covers with a stainless block, sealing the body without external hardware, and the carbon-steel rod carries a 20 um hard-chrome plating. That build handles washdown splash and humidity that quickly ruin painted mini cylinders.
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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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