Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø63mm bore and 20mm stroke, 1/4" 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.
- BoreØ63 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU
Short stroke, serious force: this 63 mm bore round-body mini cylinder is double acting - air drives the rod out and pulls it back - and carries a variable air cushion at each end. At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N, enough to clamp dies, crimp caps or shear trim in a 20 mm hit. The riveted stainless barrel and hard-chrome plated rod (20 um) stand up to washdown and damp plant air, and the magnet is built in as standard so CMSG, DMSG or EMSG switches clip straight on.
Plan on roughly 935 N of usable push at 0.5 MPa - about 60 percent of the rating - which lifts around 79 kg vertically with margin to spare. The U flat-end back cover bolts to fixed brackets without extra hardware, and the 1/4" port plus M14x1.5 male rod thread keep plumbing simple. Running pressure spans 0.15-1.0 MPa (22-145 psi) and speeds run 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 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 MAC63X20SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 63 | 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 MAC63X20SU Is Used
Die clamp on a punch press
The 1557.9 N push at 0.5 MPa clamps sheet blanks in a short 20 mm bite, and the air cushion keeps the clamp foot from slamming into the die.
Capping head on a bottling line
Short-stroke press action crimps caps at up to 800 mm/s while the riveted stainless body survives daily caustic washdown.
Carton stopper on a heavy conveyor
Pops up under dense carton streams and retracts between cycles, with a CMSG switch confirming full retraction each time.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC63X20SU the Right Cylinder?
At the top of the bore range there is nothing larger, so step down to a 50 mm bore (981.3 N push at 0.5 MPa) only when the load allows; if 981 N is marginal, this 63 mm cylinder is the right call. The 20 mm stroke suits pure clamp-and-release work - keep the rod guided if any side load exists. A plain double-acting cylinder has no holding function: cut the air and the piston drifts, so add a rod lock or pilot check valve wherever a load must stay put. The U flat-end back cover takes a fixed bolt directly; add FA flange, LB foot or SDB pivot brackets if the frame demands them.
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 MAC63X20SU FAQ
At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N; at 0.7 MPa those figures rise to 2181.0 N and 2040.3 N. The theoretical maximum is 317.7 kgf at 1.0 MPa, on a 63 mm bore with a 16 mm rod. Working pressure is 0.15-1.0 MPa (22-145 psi) and speed runs 30-800 mm/s.
Back the cushion needle screws fully off before first air, then close them gradually until end-of-stroke shock disappears at your working speed. The cushion is adjustable at both ends and works across the 30-800 mm/s speed band; treat it as a damper, not a brake - it will not hold a load once air is removed.
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