Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 325mm 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.
- BoreØ20 mm
- Stroke325 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM
On machines where the cylinder hangs in a link or clevis, the CM round-end back cover of the MAC20X325SCM takes the pin directly without extra adapters. The 20 mm bore is double acting with variable cushions at both ends, and the rolling-packed stainless barrel keeps dirt and moisture out over the 325 mm stroke.
Expect 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push at 0.7 MPa; theoretical maximum force is 32 kgf. Halve the push for a safe margin and you still move about 94 N of real work. Speed range is 30-800 mm/s and the built-in magnet teams with CMSG, DMSG or EMSG switches for position signals.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 325 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MAC20X325SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×325 | 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 MAC20X325SCM Is Used
Hopper gate release
Hanging from its CM round end, the rod pulls a slide gate open to release granulate from a small hopper on demand.
Vial tray indexing
Frequent wipe-downs in a pharma bench cell suit the stainless barrel, while 157 N nudges vial trays into the next station.
Web guide adjuster
The round-end cover pins into a linkage that trims web alignment on a converting machine, with cushions damping each correction.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X325SCM the Right Cylinder?
If 157 N at 0.5 MPa is short, the 25 mm bore pushes 245.3 N; if it is generous, the 16 mm bore's 100.5 N saves air. CM round ends accept pivot pins, while FA flanges, LB feet or SDB brackets bolt on where a fixed mount wins. Air supply spans 0.15-1.0 MPa (22-145 psi). Keep the rod straight over 325 mm of travel - side load will wear the 8 mm rod's bushing early. Note that with no air the piston moves freely; use a rod lock when a load must stay parked.
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 MAC20X325SCM FAQ
At 0.5 MPa the bore pushes 157 N and pulls 131.9 N; at 0.7 MPa expect 219.8 N push and 184.7 N pull, topping out at 32 kgf theoretical at 1.0 MPa. Port size is 1/8 inch for this 20 mm bore.
No - the piston magnet is standard on every MAC cylinder, so CMSG, DMSG or EMSG switches mount on the barrel and report end-of-stroke positions with no special order.
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