Airtac MAC Stainless Steel Mini Air Cylinder MAC25X50SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X50SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 MAC25X50SU
A 50 mm stroke on a 25 mm bore puts the MAC25X50SU in the 245.3 N push class at 0.5 MPa. This double-acting round-body cylinder cushions itself with adjustable air at both ends, runs on 0.15-1.0 MPa (22-145 psi) and cycles anywhere from 30 to 800 mm/s.
Where painted aluminium minis flake and swell in wet shops, the stainless barrel and hard-chrome plated rod keep sliding smoothly through washdown and oil mist. The U flat-end back cover bolts straight to a fixed plate with no bracket in between. Rated 50 kgf theoretical at 1.0 MPa, it still deserves headroom: size the real work at about 147 N (60% of the 0.5 MPa push), which comfortably lifts a 12 kg fixture vertically.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X50SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X50SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MAC25X50SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MAC25X50SU Is Used
Welding fixture hold-down
The U flat-end cover clamps direct to the fixture plate, and 147 N of usable force at 0.5 MPa keeps a sheet-metal bracket seated during spot welding.
Case-packer carton push
At 245.3 N and 30-800 mm/s, the cylinder squares cartons into a case-packer lane, with both-end cushioning stopping the box bounce at full extension.
Fixture lift-off pin
In a machining cell, the cylinder lifts a 12 kg jig blank off locating pins vertically - the halved 0.5 MPa rating keeps the lift safe with margin.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X50SU the Right Cylinder?
Downsize to a bore 20 MA for lighter pushes (157.0 N at 0.5 MPa) or move to bore 32 when the load demands 402.2 N. Side-load risk is low at this short 50 mm stroke, but keep the load aligned anyway. Remember the piston is free to drift whenever air pressure is lost; a rod lock or pilot check valve handles jobs where the clamp must stay closed. The standard magnet pairs with CMSG, DMSG and EMSG switches for position feedback.
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 MAC25X50SU FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa expect 343.4 N push and 288.5 N pull, with a theoretical 50 kgf peak at 1.0 MPa. Port size is 1/8", rod thread M10x1.25, rod diameter 10 mm.
Back both needle screws fully out before applying air, run the cylinder slowly to each end, then close the screws a little at a time until the 50 mm stroke ends smoothly at your working speed. This protects the aluminium covers and the load during fast cycles up to 800 mm/s.
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