Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SCA 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 MAC25X185SCA
A 25 mm bore MAC with a 185 mm stroke and CA pivot back cover, this double-acting mini cylinder moves its rod with air in both directions and bleeds into a variable air cushion at each end. At 0.5 MPa it pushes 245.3 N and pulls 206.1 N, putting it squarely in the light-to-medium clamp class for compact machinery.
The riveted stainless barrel and hard-chrome plated rod shrug off washdown and damp shop air, a real edge over painted minis in food and outdoor cells. Need position feedback? The magnet comes built in, so a CMSG, DMSG or EMSG switch clamps straight on. As a working figure, treat roughly 147 N (0.6 of the 245.3 N rating) as the honest push budget at 0.5 MPa.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SCA |
|---|---|
| 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 MAC25X185SCA
| 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 MAC25X185SCA Is Used
Swing gate on a carton packer
The CA pivot cover lets the cylinder body rock with a 90-degree gating arm that pushes cartons off a conveyor lane; 245 N is ample for a lightweight gate arm on a 400 mm radius.
Tilting rinse arm in a wash station
Mounted on its rear pivot, the MAC rotates a spray arm between two positions over a parts basket; the stainless barrel tolerates the humid wash zone without flaking paint.
Indexing lever on a rotary table
A pivoted lever driven by the 185 mm stroke advances a geneva-style indexer one station per cycle, with travel speed tunable anywhere from 30-800 mm/s.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X185SCA the Right Cylinder?
Compare both ways: the 20 mm bore pushes 157.0 N at 0.5 MPa if the job is lighter, while a 32 mm MAC delivers 402.2 N when 245 N is not enough. The 185 mm stroke is well inside the 500 mm standard range for this bore, but keep side loads off the 10 mm rod - guide them externally or the rod will bend over time.
Note the MAC drifts when air is removed; it has no internal lock, so add a rod lock or pilot check valve if the load must stay put. The CA pivot back cover pairs naturally with the SDB pivot bracket, and flange (FA) or foot (LB) mounts are available. PT ports are standard; order G or NPT threads by suffix.
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 MAC25X185SCA FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa the figures rise to 343.4 N push and 288.5 N pull, and the theoretical ceiling is 50.0 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) of filtered air; proof pressure is 1.5 MPa (215 psi).
Back both cushion needle screws fully off before the first run, then close them gradually until end-of-stroke knock disappears; travel speed can run anywhere from 30-800 mm/s. The built-in magnet is standard, so snap a CMSG, DMSG or EMSG reed switch onto the barrel to signal rod position - no special piston needed.
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