Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 550mm 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
- Stroke550 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 MAC25X550SCM
Double acting with a variable air cushion at each end, the MAC25X550SCM moves its rod on air both ways and finishes soft into the caps. At 0.5 MPa the 25 mm bore gives 245.3 N forward and 206.1 N back. Its CM round-end back cover presents a smooth cap for pivot or fixed fixings without an adapter plate. The 550 mm stroke is a special build, past the 500 mm catalogue limit for this bore.
In practice this bore lifts about 25 kg against gravity, or about 12.5 kg if you keep a 2:1 margin on a vertical lift, and that math comes straight from the 245.3 N push figure. The stainless tube resists corrosion in damp corners of the plant, and the standard internal magnet means CMSG, DMSG and EMSG switches mount with no special piston. Operating window is 0.15-1.0 MPa (22-145 psi) and stroke speed 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 550 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 MAC25X550SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×550 | 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 MAC25X550SCM Is Used
Slide indexing on an assembly cell
Drives a 550 mm index slide that steps housings between four machining nests, cushioned so each stop lands quietly.
Deep-carton flap tucker
The long stroke reaches into deep cartons to fold rear flaps before gluing on a case packer.
Tote lift assist
Raises totes weighing up to roughly 12.5 kg when run vertically with a 2:1 margin, easing each lift onto the picking shelf.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCM the Right Cylinder?
If 245.3 N at 0.5 MPa is more than the job needs, the bore 20 version pushes 157.0 N; if it falls short, step to the bore 32 with 402.2 N. The round-end CM cap bolts to pivots or fixed plates directly, while FA flange or LB foot mounts cover frame fixing. Air loss means no hold: centre the valve and the piston floats, so park heavy loads with a rod lock or pilot check valve. For a 550 mm stroke, align the thrust line with the load and support the part separately to protect the 10 mm rod from bending.
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 MAC25X550SCM FAQ
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa the push figure climbs to 343.4 N. The 25 mm bore is rated 50.0 kgf at 1.0 MPa in theory. Air ports are 1/8" on this bore.
It swaps the rear cap for a rounded end that suits pivot and saddle fixings without extra hardware. Barrel, cushion function, the 550 mm made-to-order stroke and the standard magnet for CMSG, DMSG and EMSG switches are unchanged.
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