Airtac MAC Stainless Steel Mini Air Cylinder MAC20X225SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X225SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 225mm 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
- Stroke225 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 MAC20X225SU
Double acting on air alone, the MAC20X225SU extends and retracts under full pneumatic power with a variable air cushion at both ends of its 225 mm stroke. The 20 mm bore yields 157 N push and 131.9 N pull at 0.5 MPa - enough for light clamping, pushing and ejecting jobs - and its U flat-end back cover suits fixed, face-mounted installations.
A stainless-steel barrel with rolled aluminium-alloy covers and a hard-chrome plated rod gives the cylinder genuine corrosion resistance next to painted minis, indoors or out. The position magnet is included as standard equipment, so DMSG or CMSG switches can be added whenever sensing is needed. In practice, budget about 94 N of usable force at 0.5 MPa - roughly an 8 kg vertical lift with a 2:1 safety factor.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X225SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X225SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 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 MAC20X225SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | 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 MAC20X225SU Is Used
Lid press on a bakery tray line
The flat-end cover bolts flush to the frame so the rod presses snap-on lids over dough trays; about 94 N of working force is ample for light snap fits, and the cushions keep the press gentle at the bottom.
Sample drawer eject on a lab autosampler
A 225 mm stroke slides a sample drawer fully out of its housing, with the standard magnet and an EMSG switch confirming the open position before the sampling probe moves in.
Gate pusher on a pick-module conveyor gate
The cylinder swings a spring-loaded access gate across a conveyor lane; 157 N at 0.5 MPa overcomes gate friction with margin to spare even at up to 800 mm/s.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X225SU the Right Cylinder?
Downsize to the 16 mm bore (100.5 N push at 0.5 MPa) for lighter work, or move up to 25 mm (245.3 N) when the load creeps higher. This bore takes 1/8" ports and an M8x1.25 male thread on the rod, and cycles between 30-800 mm/s. Like any double acting cylinder without a lock, the rod will coast if supply air drops, so fit a pilot check valve or rod lock where a held position matters. For a 225 mm stroke, mount the U flat end square to the load and avoid side thrust to protect the 8 mm rod; LB foot or FA flange mounts pair directly with this version.
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 MAC20X225SU FAQ
Push force is 157 N and pull force is 131.9 N at 0.5 MPa. At 0.7 MPa expect 219.8 N on extension and 184.7 N on retraction, with a theoretical peak of 32 kgf at 1.0 MPa. Supply air between 0.15-1.0 MPa (22-145 psi); proof pressure is 1.5 MPa (215 psi).
No. Every MAC cylinder carries a built-in magnet as standard, so CMSG, DMSG and EMSG switches clip onto the barrel without a made-to-order piston. Just confirm switch positions suit your 225 mm stroke.
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