Airtac MAC Stainless Steel Mini Air Cylinder MAC20X120SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X120SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 120mm 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
- Stroke120 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 MAC20X120SU
Flat, simple and bolt-on ready, the U back cover makes this the plainest fixed mount in the 20 mm MAC range. It is double acting with a variable air cushion at both ends: 157.0 N of push at 0.5 MPa, 219.8 N at 0.7 MPa, over a 120 mm stroke at 30-800 mm/s and 0.15-1.0 MPa (22-145 psi).
A stainless steel tube with a hard-chrome plated rod shrugs off the mild corrosion that wrecks painted or bare-aluminium minis in wet corners of a plant. The 157 N push converts to about 16 kg of lift at best; plan on roughly 8 kg vertically to keep a 2:1 margin. CMSG, DMSG or EMSG switches click onto the standard magnet whenever end positions need confirming.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X120SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X120SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 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 MAC20X120SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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 MAC20X120SU Is Used
Jar ejector on a rinsed conveyor
Ejecting foil-capped spice jars off a washdown conveyor section, where the stainless barrel outlasts painted minis by seasons.
Vibratory bowl outfeed
Sweeping misshapen caps out of the bowl outfeed at low force, with the cushion stopping the pusher gently against the track.
Grommet seating on appliance panels
Pressing rubber grommets home with about 94 N of derated force at 0.5 MPa, enough for the insert without deforming the panel.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X120SU the Right Cylinder?
Between bore 16 at 100.5 N and bore 25 at 245.3 N (both 0.5 MPa push), this unit's 157.0 N covers medium mini tasks. The flat-end U cover is the simplest fixed mount and needs no bracket. It will not park a load: kill the air and the rod moves, so add a rod lock or pilot check valve where that matters. Over 120 mm of stroke, avoid side thrust on the 8 mm rod by guiding the part itself.
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 MAC20X120SU FAQ
Rated 157.0 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32.0 kgf at 1.0 MPa. The 20 mm bore takes 1/8" ports and the 8 mm rod uses an M8x1.25 male thread. 120 mm is a standard stroke; this bore reaches 500 mm.
The high-precision stainless barrel plus a hard-chrome plated carbon-steel rod resist mild corrosion and rinse-down far better than painted or bare-aluminium minis. The aluminium-alloy covers are rolled onto the tube for a sealed round body. Keep the air filtered to 40 um, within 0.15-1.0 MPa (22-145 psi) and -20 to +70 C.
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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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