Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCAY
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCAY is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MAC20X25SCAY
The MAC20X25SCAY pairs AirTAC's 20 mm bore MAC mini cylinder with a CA pivot back cover and a Y rod knuckle, so the rod end hooks to a linkage with no separate clevis to buy. It is double acting - air pushes the rod out and pulls it home - and both ends carry a variable air cushion you trim with the needle screws. At 0.5 MPa (72.5 psi) the bore pushes 157.0 N and pulls 131.9 N, working across a 0.15-1.0 MPa (22-145 psi) supply band and 30-800 mm/s speed range.
A rolled stainless-steel barrel with a hard-chrome plated 8 mm rod shrugs off washdown and damp-shop corrosion that pits painted minis. For sizing, treat about 94 N - six tenths of the 157 N rating - as the practical working force and you keep margin for pressure dips. The magnet is built in as standard, so CMSG, DMSG or EMSG switches clip on straight from the box.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCAY Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCAY |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MAC20X25SCAY
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MAC20X25SCAY Is Used
Bottle diverting gate
The CA pivot and Y knuckle swing a sorting arm across a bottling conveyor; 157 N at 0.5 MPa redirects trays of glass without slamming thanks to the end cushions.
Carton kick-off station
Mounted under a packing belt, the cylinder nudges mis-aligned cartons onto a reject lane; the built-in magnet and a DMSG switch confirm the kick each cycle.
Rinse-bench lid lifter
In a washdown-prone sample prep area the stainless barrel and chrome rod resist splash corrosion where a painted mini would pit within months.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCAY the Right Cylinder?
If 157 N at 0.5 MPa is more than the job needs, the 16 mm bore (100.5 N) saves air; if it falls short, the 25 mm bore delivers 245.3 N. Note that a MAC will not park the rod when supply is lost - the piston drifts - so a pilot check valve or rod lock is the fix for held loads. The CA pivot plus Y rod knuckle suits swinging linkages and gate arms; FA flange, LB foot or SDB pivot mounts cover fixed installations. Ports are 1/8" and the rod thread is M8x1.25. Stroke 25 mm is standard; the bore supports up to 500 mm if you later need more travel.
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 MAC20X25SCAY FAQ
The 20 mm bore pushes 157.0 N and pulls 131.9 N at 0.5 MPa; at 0.7 MPa these become 219.8 N and 184.7 N, and the theoretical ceiling is 32.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, ports are 1/8", the rod is 8 mm with M8x1.25 male thread, and stroke speeds run 30-800 mm/s.
The Y knuckle is a clevis-style eye on the rod that lets the driven link pivot freely through the arc of travel, so side loads never bend the 8 mm rod. Combined with the CA pivot back cover the whole cylinder can rock in one plane, which is exactly what gate, lever and linkage drives need. Other mounts - FA flange, LB foot or SDB pivot - are available if a fixed base suits better.
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