Airtac MAC Stainless Steel Mini Air Cylinder MAC25X270SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X270SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 270mm 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
- Stroke270 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 MAC25X270SU
Flat on the back and quick to bolt down, the MAC25X270SU pairs a U end cover with a 25 mm stainless round barrel rolled into aluminium covers. Air on both piston faces drives the stroke: 245.3 N out and 206.1 N back at 0.5 MPa, with the variable cushion at each end keeping 30-800 mm/s motion from hammering the caps. Working pressure spans 0.15-1.0 MPa (22-145 psi).
The hard-chrome plated rod runs in seals that store grease, so lubrication survives metal dust and dry shop air alike. Derate for continuous work to about 147 N - 60 percent of the 0.5 MPa push - and the bore will lift 12.5 kg straight up and still hold margin back. A built-in magnet means CMSG, DMSG or EMSG switches read stroke position with no special-order piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X270SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X270SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 270 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 MAC25X270SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×270 | 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 MAC25X270SU Is Used
Tote Indexer in a Sorting Lane
Steps totes forward one position along a gravity lane; the flat-end cover mounts flush to the lane frame with no pivot hardware needed.
Adjustable Cut-Length Stop on a Saw
Sets the stock length on a light-profile cutting saw; 343 N push at 0.7 MPa locks the stop against blade vibration.
Rivet Feed on a Light Assembly Cell
Feeds rivets into the setter jaws; the hard-chrome rod endures the metal-dust environment far better than a painted mini body.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X270SU the Right Cylinder?
Either direction you size, the neighbours are clear: 157 N at 0.5 MPa from a 20 mm bore or 402.2 N from a 32 mm bore. Choose smaller to trim air use, larger for side-load headroom. Once air vents, this piston drifts wherever the load pushes it, so held positions call for a rod lock or pilot check valve. Bolt the flat-end cover to a bracket, support the barrel with an FA flange or LB foot across the 270 mm stroke, and let outside guides take any bending off 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 MAC25X270SU FAQ
Count on 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push and 288.5 N pull at 0.7 MPa; the theoretical ceiling is 50 kgf at 1.0 MPa. Connections are 1/8" ports with M10x1.25 rod thread, working range 0.15-1.0 MPa (22-145 psi).
Bolt the flat-end U cover to a support bracket, then add an FA flange, LB foot or SDB pivot under the barrel so the 10 mm hard-chrome rod is not asked to carry side load across the 270 mm travel; guide the load on its own slides.
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