Airtac MAC Stainless Steel Mini Air Cylinder MAC25X250SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X250SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MAC25X250SU
Built around a stainless round tube rolled tight onto aluminium-alloy covers, the MAC25X250SU stays sealed and aligned in wet, dusty air without periodic re-torquing. It is double acting - air drives the rod out and back - with a variable air cushion at both ends, producing 245.3 N of push and 206.1 N of pull at 0.5 MPa from the 25 mm bore.
Budget roughly 147 N of dependable push at 0.5 MPa rather than the full rating, which equates to lifting about 12 kg vertically with a 2:1 margin - enough for trays, lids and small jigs. The U flat end bolts flush where a pivot is not needed, and because the magnet is factory-fitted, a CMSG or DMSG switch adds position feedback within minutes. Operating window is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X250SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X250SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MAC25X250SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MAC25X250SU Is Used
Filler stopper gate
Stopping jars under a rotary filler on a food line, where rinse-down mist makes the stainless barrel a real advantage.
Bottle rejector
Nudging off-spec bottles off a discharge conveyor at line speed, cushioned stops keeping the pusher from slamming at stroke end.
Dosing skid chute
Opening and closing a gravity-feed chute on an outdoor water-treatment dosing skid exposed to weather.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X250SU the Right Cylinder?
Compare bores before ordering: 20 mm gives 157.0 N of push at 0.5 MPa, 32 mm reaches 402.2 N, so this 25 mm size at 245.3 N often lands in the sweet spot. Because the U back cover has no pivot, pair it with FA flange or LB foot hardware for fixed mounting and use I or Y knuckles where the rod end must articulate. A centred valve with the air shut off will not hold position - the load simply moves the rod, so specify a rod lock for true parking. And on 250 mm of travel, the 10 mm rod needs side thrust taken by external guides, not the cylinder 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 MAC25X250SU FAQ
Expect 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, and roughly 50 kgf theoretical maximum at 1.0 MPa. Bore 25 mm, rod 10 mm, air ports 1/8 inch, standard strokes to 500 mm, speed 30-800 mm/s.
Yes. The piston magnet is a standard fitting on every MAC, so CMSG, DMSG and EMSG switches mount on the barrel and read end-of-stroke or mid-stroke positions without a special-order piston. The same magnet setup works across the whole 16-63 mm bore range.
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