Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 280mm 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
- Stroke280 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 MAC25X280SU
A 280 mm reach on a 25 mm bore makes the MAC25X280SU the long-arm member of the round-body MAC family: double acting, adjustable air cushion at each end, magnet fitted as standard for CMSG, DMSG or EMSG switches. The piston delivers 245 N of push and 206 N of pull at 0.5 MPa, enough to slide a 20 kg pallet across a low-friction roller section or lift about 12 kg vertically on a 2:1 margin.
Construction is a stainless-steel barrel rolled onto aluminium covers with a hard-chrome plated carbon-steel rod (20 um), a package that outlasts painted-steel minis in humid or washdown areas. The U flat-end back cover fixes straight to a machine face with no adapter bracket. Remember the rod is free to move once air is vented, so a pilot check valve or rod lock is needed for a load that must stay extended.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 280 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 MAC25X280SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×280 | 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 MAC25X280SU Is Used
Carton reject pusher
Sweeps misprinted cartons off a 600 mm packaging belt in one clean 280 mm pass, with the cushion damping the hit against the reject chute.
Index-slide actuator
Drives the indexing slide of a small rotary assembly table, where 245 N at 0.5 MPa is ample for a light fixture plate.
Test-chamber tray loader
Slides sample trays into an environmental chamber through a narrow slot; the stainless barrel shrugs off condensation inside the chamber.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU the Right Cylinder?
At 0.5 MPa the 20 mm bore manages 157 N and the 32 mm bore 402 N, so 245 N is the middle option for this duty. Over 280 mm of stroke even a small side force bends the slender rod - guide the load on its own rails and let the cylinder push in pure line. Mounting is flexible: LB foot and FA flange brackets, SDB pivot, or rod knuckles I and Y. If the valve is centred mid-stroke the piston simply drifts; the cushion absorbs end-of-travel shock but is not a brake.
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 MAC25X280SU FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa, 343.4 N push and 288.5 N pull; theoretical maximum 50 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi), air filtered to 40 um, speed 30-800 mm/s, 1/8 inch ports.
Both ends carry a variable cushion. Back the needle screws fully out before the first stroke, run the cylinder slowly, then close each screw gradually until end-of-stroke knock disappears. The 30-800 mm/s speed band gives plenty of room to tune.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MAC Stainless Steel Mini Air Cylinder MAC25X280SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.