Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCA 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 MAC25X550SCA
A 25 mm stainless round barrel driving a 550 mm stroke, the MAC25X550SCA is double acting with a variable air cushion at both ends. It pushes 245.3 N and pulls 206.1 N at 0.5 MPa, rising to 343.4 N on a 0.7 MPa supply. The CA pivot back cover on the rear cap takes a clevis pin directly, so the body can swing through an arc with no added bracket. Since 550 mm exceeds the 500 mm standard stroke for this bore, it is built to order.
The riveted stainless barrel and 20 um hard-chrome rod stand up to washdown and humid plant air where painted minis rust. Plan the real job at about 147 N of push at 0.5 MPa, roughly 60 percent of rating, and you keep margin for friction and pressure droop. A magnet is built in as standard, so CMSG, DMSG or EMSG switches clip straight on. Run it anywhere in 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s, and bleed the cushion screws fully open before you wind them in.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCA |
|---|---|
| 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 MAC25X550SCA
| 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 MAC25X550SCA Is Used
Swing-out reject gate
The CA pivot cover pins straight to a lever arm that swings reject bottles off a filling line, with the cushion easing the gate into its stop.
Wide conveyor pusher
550 mm of travel sweeps trays clear across a broad accumulation conveyor, powered by 245.3 N at 0.5 MPa.
Hopper lid tilt
Mounted on a pivot, the cylinder tilts a feed hopper lid open on a mixing skid; the built-in magnet signals open via a DMSG switch.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SCA the Right Cylinder?
Next size down, the bore 20 MAC pushes 157.0 N at 0.5 MPa; next size up, the bore 32 reaches 402.2 N. Pick the 25 if your load sits between roughly 150 and 240 N at working pressure. Note the MAC does not hold position: when air is cut the rod drifts, so a pilot check valve or rod lock is needed for a parked load. Over 550 mm of stroke keep side loads off the 10 mm rod by guiding the part externally, and match the FA flange or LB foot mount plus SDB pivot bracket to your frame.
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 MAC25X550SCA FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa push rises to 343.4 N. The theoretical maximum at 1.0 MPa is 50.0 kgf. The port on this bore is 1/8" and the rod thread is M10x1.25.
The bore 25 MAC normally tops out at 500 mm of stroke, so 550 mm is produced as a made-to-order build. The stainless barrel, CA pivot back cover and standard magnet stay the same; only the barrel length changes.
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