Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 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 MAC20X20SU
Fixed-mount simplicity is the point of the U back cover: MAC20X20SU bolts flat against a machine plate with no pivot hardware in the way. Double acting with variable air cushioning at both ends, the 20 mm bore delivers 157 N on extension and 132 N on retraction at 0.5 MPa - budget roughly 94 N for the actual job, or count on lifting about 8 kg vertically. Push reaches 220 N at 0.7 MPa.
A stainless round barrel wrapped around a hard-chrome 8 mm rod keeps corrosion out of damp corners and rinse-down areas. The magnet ships built in, so CMSG, DMSG and EMSG switches mount straight on, and the 20 mm stroke cycles at 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MAC20X20SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 MAC20X20SU Is Used
Fixture stop pin
Deploying a retractable stop on a CNC fixture - 157 N at 0.5 MPa resists part nudge and the flat end bolts flush to the plate.
Connector crimp anvil
Pressing a small crimp anvil onto wire terminals, where the dual cushion keeps the anvil from ringing at bottom dead centre.
Present-and-verify stop
Rising a confirm pin under a car door trim panel on an assembly conveyor, with a DMSG switch on the standard magnet proving extension.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SU the Right Cylinder?
Match the load first: 157 N at 0.5 MPa beats the 16 mm bore's 100.5 N but trails the 25 mm bore's 245.3 N, so pick by margin rather than bore habit. The flat-end cover suits fixed bolting; switch to FA flange, LB foot or SDB pivot brackets when the frame needs them. If the application must hold position through a power loss, add a rod lock or pilot check valve - the cylinder itself drifts when air bleeds off. Ports are 1/8" across the 20-40 mm bores.
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 MAC20X20SU FAQ
Expect 157 N push and 132 N pull at 0.5 MPa, 220 N push and 185 N pull at 0.7 MPa, and 32 kgf theoretical maximum at 1.0 MPa. Pressure range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof; speed 30-800 mm/s; temperature -20 to +70 C. Ports are 1/8" and the rod thread is M8x1.25.
The U flat-end back cover accepts a fixed pin or bolt-down mounting, and AirTAC's FA flange, LB foot and SDB pivot brackets add flange, foot or pivoted bases. I and Y rod knuckles thread onto the M8x1.25 rod end for load attachment. Confirm bracket dimensions from the datasheet.
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