Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 20mm 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.
- BoreØ25 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU
AirTAC's riveted round-body mini cylinder, the MAC25X20SU pairs a 25 mm bore with a short 20 mm stroke. Double acting, it pushes 245 N and pulls 206 N at 0.5 MPa, rising to 343 N push at 0.7 MPa, with a variable air cushion at each end.
The stainless barrel and hard-chrome plated 10 mm rod shrug off mild corrosion and washdown, a real edge over painted minis in damp or food-area duty. The magnet is built in as standard, so CMSG / DMSG / EMSG switches clip straight on. At a practical 60 percent of rating you still command about 147 N - enough to hold roughly a 15 kg clamping load in a compact fixture.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MAC25X20SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MAC25X20SU Is Used
Drill fixture clamp
Clamping small aluminium brackets against a stop during a drilling op - 20 mm of stroke and about 147 N of practical push hold the part firmly.
Bench ejector
Kicking finished sub-assemblies off a small assembly bench; the short stroke needs barely 20 mm of machine space to clear the part.
Clamp-confirm gate
A CMSG switch on the built-in magnet confirms the clamp has closed before the PLC allows the drill cycle to start.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SU the Right Cylinder?
Downsize to the 20 mm bore (157 N push at 0.5 MPa) for lighter clamps, or step up to the 32 mm bore (402 N) when parts get heavier. The U flat-end cover bolts straight to a fixed plate; add an FA flange or LB foot if the body needs support. Remember the rod moves freely once air is removed - use a pilot check valve or rod lock if the load must stay put. PT thread is standard; add the code letter for G or NPT.
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 MAC25X20SU FAQ
Push is 245 N and pull 206 N at 0.5 MPa; at 0.7 MPa push is 343 N and pull 288 N; the theoretical maximum is 50 kgf at 1.0 MPa. The cylinder is double acting, runs on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s, and uses a 10 mm rod with 1/8" ports.
Yes. The MAC25X20SU uses a stainless-steel round barrel riveted to aluminium-alloy covers, with a 10 mm carbon-steel rod hard-chrome plated to 20 um. That build shrugs off mild corrosion and regular washdown far better than painted mini cylinders, which is why it suits damp food and packaging areas.
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1-Year Warranty
Covers non-human-caused product damage.
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