Airtac MAC Stainless Steel Mini Air Cylinder MAC20X350SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X350SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 350mm 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
- Stroke350 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 MAC20X350SU
Fixed brackets suit the MAC20X350SU: the U flat-end back cover mounts square to the machine frame, while the stainless round body keeps splash-prone areas corrosion-free. The 20 mm bore is double acting, extends and retracts on air alone, and carries a variable cushion at each end to tame deceleration over the full 350 mm stroke.
At 0.5 MPa expect 157 N extending and 131.9 N retracting; a magnet ships built in as standard, so CMSG, DMSG and EMSG switches drop straight on. Halving the theoretical 16 kg lift figure for a 2:1 margin, treat it as an 8 kg vertical hoist in practice.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X350SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X350SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 350 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 MAC20X350SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×350 | 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 MAC20X350SU Is Used
Baler lid hold-down on a small press
U bracket bolts the body square to the press frame; 157 N seats liners over 350 mm while cushions absorb the final contact.
Index stopper on a rotary table
A flat-mounted stop drops into a 350 mm arc path to halt indexed pallets; 131.9 N return retracts it clear of the fixture.
Deep-drawer eject in a tool crib
Pushes tool drawers of about 8 kg open from the back of the cabinet, with no corrosion worry in coolant-misted shop air.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X350SU the Right Cylinder?
Force ladder at 0.5 MPa: 16 mm bore 100.5 N, this 20 mm bore 157 N, 25 mm bore 245.3 N - pick the rung your load sits under with margin. The rod holds nothing on air loss; supply failure or a centred valve lets the load creep, so spec a rod lock or check valve for clamped positions. Long strokes magnify side load, so bolt the U cover square and guide any offset force outside the cylinder.
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 MAC20X350SU FAQ
At 0.5 MPa expect 157 N extend and 131.9 N retract; at 0.7 MPa, 219.8 N and 184.7 N; theoretical maximum 32 kgf at 1.0 MPa. Bore is 20 mm, rod 8 mm (M8x1.25), port 1/8" in PT, G or NPT, pressure 0.15-1.0 MPa (22-145 psi), and 350 mm sits within the 500 mm standard stroke limit.
No. As a plain double-acting MAC, a centred valve or lost supply lets the rod and load drift; the end-of-stroke air cushion only slows motion, it is not a brake. For a held or parked load, add a rod lock cylinder or fit a pilot check valve in the supply line.
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