Airtac MAC Stainless Steel Mini Air Cylinder MAC25X305SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X305SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 305mm 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
- Stroke305 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 MAC25X305SU
Five millimetres of extra travel can save a redesign: the MAC25X305SU gives a 25 mm bore a 305 mm stroke, still inside the standard range for this series, and delivers 245.3 N of push at 0.5 MPa (206.1 N on the return). It is double acting, cushioned by a variable air cushion at each end, and rides in a stainless round barrel riveted to aluminium covers - a build that tolerates outdoor and food-area splash that swells painted housings. The 10 mm rod is hard-chrome plated 20 um deep; ports are 1/8".
Derate for reality: count on roughly 147 N of genuine working push at 0.5 MPa, or hang about 12 kg from the rod with a 2:1 lift margin. The U flat-end back cover sits flush against fixtures, while the standard piston magnet accepts CMSG, DMSG and EMSG switches for position signals without any special order. Cycle it anywhere from 30-800 mm/s on a 0.15-1.0 MPa (22-145 psi) line; proof pressure is 1.5 MPa (215 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X305SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X305SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 305 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 MAC25X305SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×305 | 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 MAC25X305SU Is Used
Lint-screen rake in a textile line
Rakes a lint filter screen sideways across a stenter frame; the extra 5 mm of travel covers the screen track where a 300 mm unit falls short.
Case-lane gate kicker
Kicks misaligned cases off a conveyor merge in a fulfilment centre; the dual adjustable cushion absorbs the kick at both stroke ends.
Hopper lid lifter at a batching station
Lifts a stack of ingredient bin lids weighing about 12 kg; the built-in magnet signals full open to the controller via a DMSG switch.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X305SU the Right Cylinder?
Right-size before you commit: the 20 mm bore of this series manages 157 N push at 0.5 MPa and the 32 mm bore 402.2 N, so the 25 mm barrel is the middle choice when loads land between 15 and 40 kg equivalent. This is a plain double-acting cylinder - the piston will creep once air bleeds away and it never locks itself, so spec a rod lock or pilot check valve anywhere the load has to stay put. The flat U cover bolts flush to a plate, and the ordering code accepts FA flange, LB foot or SDB pivot brackets if the frame needs them. Over 305 mm of travel, side load is the rod's enemy; keep the push axial and support long workpieces on guides. Rod thread is M10x1.25.
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 MAC25X305SU FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; push 343.4 N at 0.7 MPa; theoretical maximum force 50 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, bore 25 mm, stroke 305 mm.
Yes - back the cushion needle screws off before first air, then close them gradually until end-of-stroke knock disappears. Because the rod travels 305 mm unsupported, align the load axially and keep side forces off the hard-chrome 10 mm rod to protect the seals and barrel bore.
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