Airtac MAC Stainless Steel Mini Air Cylinder MAC20X5SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X5SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 5mm 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
- Stroke5 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 MAC20X5SU
A 5 mm stroke makes this bore 20 MAC a needle-position cylinder: it nudges a part or clamp jaw the last few millimetres and trims the landing with a variable air cushion at each end. Air drives the rod out and back (double acting), and the stainless round barrel with a hard-chrome plated steel rod shrugs off splashes and mild washdown that fade painted minis.
At 0.5 MPa it pushes 157 N and pulls 131.9 N (219.8 N at 0.7 MPa, up to 32 kgf theoretical), so treat about 94 N as the working push when sizing a fixture. The magnet is built in as standard, so a CMSG, DMSG or EMSG switch clips on to confirm the nudge was made.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X5SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X5SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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 MAC20X5SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×5 | 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 MAC20X5SU Is Used
Locating pin seating
Final 5 mm advance of a locating pin before a CNC fixture closes, with the cushion absorbing seating shock at 30-800 mm/s.
Micro diverter gate
Flipping a small divert gate on a packaging line where the full travel needed is only a few millimetres.
Switch-confirmed clamp
A 94 N-class clamp jaw on an electronics assembly jig, with a CMSG switch verifying every closure.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X5SU the Right Cylinder?
For tiny end-of-travel pushes, a bore 16 unit gives 100.5 N at 0.5 MPa, while stepping up to bore 25 raises that to 245.3 N. With no air applied the piston drifts freely, so pilot-check or rod-lock the load if it must stay put. The U flat-end back cover bolts the body flat; FA flange, LB foot or SDB pivot brackets fit the same barrel, and the magnet stays standard.
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 MAC20X5SU FAQ
At 0.5 MPa it pushes 157.0 N and pulls 131.9 N; at 0.7 MPa those rise to 219.8 N and 184.7 N. The theoretical maximum is 32 kgf at 1.0 MPa. Air supply runs 0.15-1.0 MPa (22-145 psi), port is 1/8", rod thread M8x1.25, speed 30-800 mm/s.
Yes - the barrel is stainless steel and the rod is hard-chrome plated carbon steel inside riveted aluminium covers. The piston magnet is standard, so CMSG / DMSG / EMSG switches mount without a special-order piston.
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