Airtac MAC Stainless Steel Mini Air Cylinder MAC25X275SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X275SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 275mm 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
- Stroke275 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 MAC25X275SCA
For a 275 mm reach inside a compact round shell, the MAC25X275SCA pairs a 25 mm stainless barrel with a hard-chrome plated rod, a combination that shrugs off mild corrosion in damp, washed-down or outdoor spots where painted minis fail. It is double acting - air drives the rod both ways - and a variable air cushion at each end lets you bleed off end-of-stroke shock so you can run 30-800 mm/s without hammering the covers.
At 0.5 MPa this bore pushes 245.3 N, which translates to roughly 147 N of usable work once you keep a 30% margin, or a vertical lift of about 12 kg with a 2:1 safety factor (25 kg at full rating). The magnet is built in as standard, so CMSG, DMSG or EMSG switches clip straight on - no special piston, no reorder. The CA pivot back cover takes a mounting pin directly, skipping extra brackets on swinging linkages.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X275SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X275SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 275 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 MAC25X275SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×275 | 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 MAC25X275SCA Is Used
Coffee-roaster hopper gate
The 275 mm stroke slides a roast-cooling hopper gate fully open while the pivot CA cover mounts straight on the gate link.
Parcel sorter diverter
Pinning through the CA eye, the cylinder swings a 275 mm diverter flap to route boxes between conveyor lanes with about 147 N of working force.
Bakery tray pusher
Trays slide off the oven discharge one at a time; the stainless barrel tolerates flour dust and washdown, and end-of-stroke cushions stop the tray softly.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X275SCA the Right Cylinder?
Size check: the 20 mm bore gives 157 N at 0.5 MPa and the 32 mm bore gives 402.2 N, so if your load is light and speed matters little, step down; if the 25 mm runs near its 245.3 N rating, step up. Remember a plain double-acting cylinder does not hold position when air is lost - the rod drifts under load - so add a pilot check valve or rod lock where a held load matters.
With 275 mm of unsupported travel, keep side loads off the 10 mm rod: guide the payload externally or couple through an I or Y knuckle, and pick FA flange, LB foot or SDB pivot brackets to suit the frame. Ports are 1/8" and the 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 MAC25X275SCA FAQ
On a 25 mm bore the rod pushes 245.3 N and pulls 206.1 N at 0.5 MPa; at 0.7 MPa push rises to 343.4 N, with a theoretical maximum of 50 kgf at 1.0 MPa. Air feeds through 1/8" ports. Plan real work at about 147 N to leave margin.
Back both needle screws fully off before start-up, then close them gradually until the 275 mm stroke ends smoothly. The variable air cushion works at both ends and suits speeds from 30-800 mm/s within 0.15-1.0 MPa (22-145 psi).
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