Airtac MAC Stainless Steel Mini Air Cylinder MAC25X155SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X155SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 155mm 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
- Stroke155 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 MAC25X155SCA
The MAC25X155SCA stretches the 25 mm MAC family to a 155 mm stroke while keeping the riveted stainless-steel round barrel that shrugs off washdown and damp shops. At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; plan on roughly 147 N of real work at 0.5 MPa, or use it to lift about 12 kg vertically with a 2:1 margin. The CA pivot back cover takes a clevis pin, so the rod can swing through its arc with no extra bracket to machine.
A variable air cushion sits at both ends, letting you run the long stroke up to 800 mm/s and dial out end-of-stroke shock instead of hammering the covers. Double-acting air extends and retracts the rod across a 0.15-1.0 MPa (22-145 psi) supply, and the magnet built in as standard picks up CMSG, DMSG or EMSG switches anywhere along the barrel for stroke-end signalling.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X155SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X155SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 155 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 MAC25X155SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×155 | 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 MAC25X155SCA Is Used
Weld fixture swing clamp
Pinned to the fixture by its CA pivot end, the cylinder rotates a clamp arm through its arc and closes with 245.3 N at 0.5 MPa, cycling all shift in weld spatter without rusting.
Reject gate flipper
Swings a divert gate across a 155 mm opening on a packaging line; the dual cushion tames the flip so the gate lands quietly at up to 800 mm/s.
Pick-station lift
Raises parts of about 12 kg in a machine-tending cell with a 2:1 force margin, while the standard magnet confirms up and down positions to a CMSG switch.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X155SCA the Right Cylinder?
Step down to a MAC16X155 if the job needs only 100.5 N of push at 0.5 MPa, or step up to the 32 mm bore at 402.2 N when forces climb. This bore runs 1/8" ports and an M10x1.25 rod thread. Keep in mind the piston drifts whenever air is lost or the valve centres - the cushion is not a lock - so fit a pilot check valve or rod lock where the load must stay put. With 155 mm of rod exposure, keep side load off the rod or add external guides; FA flange, LB foot and SDB pivot brackets can firm up the mount.
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 MAC25X155SCA FAQ
At 0.5 MPa the 25 mm bore pushes 245.3 N and pulls 206.1 N. At 0.7 MPa push rises to 343.4 N and pull to 288.5 N, and the theoretical ceiling is about 50 kgf at 1.0 MPa. Air drives the rod both ways, and a variable air cushion at each end softens both stops.
The CA cover puts a pivot eye at the rear, so the cylinder hangs on a pin and follows a swinging load without brackets. The magnet is already in the piston as standard, so CMSG, DMSG or EMSG reed switches clamp straight onto the stainless barrel for end-of-stroke signals.
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