Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 185mm 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
- Stroke185 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 MAC25X185SU
With a flat-ended U back cover and a 185 mm stroke on a 25 mm bore, the MAC25X185SU is a double-acting cushioned mini cylinder - air both extends and retracts the rod while a variable air cushion at each port absorbs end-of-stroke shock. At 0.5 MPa the piston delivers 245.3 N forward and 206.1 N back.
The rolled stainless tube and hard-chrome plated rod make it a sensible pick where painted minis rust - damp basements, washdown zones, outdoor conveyors. Plan work around roughly 147 N (60 percent of the 245.3 N push rating) rather than the full figure, and you leave margin for friction and pressure sag. A magnet is fitted as standard for CMSG, DMSG or EMSG switches.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 185 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 MAC25X185SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×185 | 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 MAC25X185SU Is Used
Clamping jig for extrusion cutting
The flat U end bolts the cylinder square to a saw jig; 245.3 N clamps aluminium extrusion profiles against a backstop before the blade enters.
Tray pusher on a bakery rack conveyor
An 185 mm stroke nudges loaded trays sideways at lane ends; the cushioned stops keep the trays from slamming the frame at lane change.
Box flap tucker on a case sealer
The rod folds leading flaps down before taping; a DMSG switch on the standard magnet confirms full retraction between boxes.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SU the Right Cylinder?
Downsize to a 20 mm bore (157.0 N push at 0.5 MPa) for lighter duty, or upsize to 32 mm (402.2 N) when loads grow; the 25 mm sits between. The 185 mm stroke is standard for this bore, but span the rod with an external guide on long pushes to protect it from bending under side load.
Remember this is a plain double-acting cylinder: when the valve centres or air is lost, the piston and load drift freely, so a rod lock or pilot check valve is the fix for held positions. The U flat end mounts flush against a machine face, and FA, LB or SDB hardware covers flanged, footed or pivoted frames. PT threading is default; G and NPT are orderable.
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 MAC25X185SU FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; 343.4 N push and 288.5 N pull at 0.7 MPa; 50.0 kgf theoretical maximum at 1.0 MPa. Operating range 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, air filtered to 40 um, temperature -20 to +70 C.
The rolled stainless barrel and hard-chrome plated rod shrug off mild corrosion and frequent hose-down far better than painted or plain aluminium minis. Seals and the chrome layer are the wear items, so rinse gently and inspect the rod surface during maintenance intervals.
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