Airtac MAC Stainless Steel Mini Air Cylinder MAC25X240SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X240SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 240mm 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
- Stroke240 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 MAC25X240SU
A 240 mm stroke on the 25 mm MAC gives you a long-reach push rod in a slim round body: 245.3 N of push and 206.1 N of pull at 0.5 MPa, rising to 343.4 N at 0.7 MPa, double acting with a variable air cushion at each end. The riveted stainless-steel barrel and 10 mm hard-chrome plated rod shrug off washdown and damp shop air, a real edge over painted minis in food and outdoor cells. Set the needle screws to trim end-of-stroke shock and you can cycle anywhere from 30-800 mm/s without hammering the covers.
Air does both the work here: it extends and retracts the rod, so there is no spring to fatigue. Plan real work at roughly 147 N at 0.5 MPa rather than the full 245.3 N rating, and treat the bore as a 25 kg vertical-lift equivalent, about 12 kg if you keep a 2:1 margin. The magnet comes built in as standard, so a CMSG, DMSG or EMSG switch clamps straight onto the barrel for end-of-stroke signals.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X240SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X240SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 240 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 MAC25X240SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×240 | 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 MAC25X240SU Is Used
Press die ejector
Kicks formed blanks out of a 240 mm-deep stamping die after each hit; 245 N of push clears the part while the cushion kills the return thud.
Cross-belt carton pusher
Shoves cartons sideways off a sorter lane; the dual air cushion stops the rod softly so boxes arrive square instead of skewed.
Lab sample elevating stage
Raises a test-rig sample tray through 240 mm per cycle; a DMSG switch on the standard magnet confirms the up position every time.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X240SU the Right Cylinder?
Compared with the 20 mm bore (157.0 N push at 0.5 MPa) this 25 mm barrel carries over half again the force; step up to 32 mm (402.2 N) when the load grows. If a 240 mm rod must stay put with air off, remember the piston drifts when pressure drops - add a rod lock or pilot check valve for held loads. The U flat-end cover suits fixed bolt-through mounts, and LB foot or FA flange brackets bolt on if the frame needs them. At this stroke, guide the load or keep side force low to protect the 10 mm rod.
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 MAC25X240SU FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa those rise to 343.4 N push and 288.5 N pull. Theoretical maximum at 1.0 MPa is 50.0 kgf on this 25 mm bore. It is double acting with a variable air cushion at both ends, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um.
The 10 mm hard-chrome rod runs in a riveted stainless-steel barrel with aluminium-alloy covers, and the U flat-end back cover takes a fixed bolt-through mount; FA flange or LB foot brackets are options. A magnet is built in as standard, so CMSG, DMSG or EMSG switches detect position without a special-order piston.
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