Airtac MARU Stainless Steel Mini Cylinder MARU20X500S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X500S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 500mm 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
- Stroke500 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU20X500S
Long, light pushes are the specialty of the MARU20X500S: a 500 mm stroke on the 20 mm bore, still inside the standard catalogue rather than a made-to-order special. It is double acting with adjustable air cushions at both extremities, and the up-facing mount is riveted into the front cover as part of the body.
Extension force is 157.0 N at 0.5 MPa against 131.9 N on retract; treat about 94 N as the practical working effort, which equates to lifting roughly 8 kg vertically with a 2:1 margin. The riveted stainless barrel and hard-chromed 8 mm rod take splash and damp air in stride where painted minis would pit, and the variable cushion needles at each end let you decelerate the long travel gently instead of hammering the covers.
Airtac MARU Stainless Steel Mini Cylinder MARU20X500S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X500S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Acting type | Double acting + cushion (up mount) |
| 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 MARU Stainless Steel Mini Cylinder MARU20X500S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 20 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
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 MARU Stainless Steel Mini Cylinder MARU20X500S Is Used
Reach-in ejector on a wide conveyor
Pushes rejects sideways across a 500 mm wide belt from a single side mount, with about 94 N of working force at 0.5 MPa - ample for empty cartons, not for jammed steel.
Sample probe in a fume hood
Dips a sampling lance into a test bath; the stainless barrel tolerates fume and splash, and a DMSG switch on the standard magnet confirms full withdrawal before the next cycle.
Slide-out tray on a test bench
Extends a test tray on external rails; the cylinder provides the 500 mm push and pull while the rails take the weight and any side load off the rod.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X500S the Right Cylinder?
Check the side-load picture before ordering: over 500 mm the 8 mm rod will bend under lateral force, so carry the load in external guides and let the cylinder only push and pull along its axis. Need more muscle? The 25 mm bore in the same integrated up-mount format lifts push force to 245.3 N at 0.5 MPa. The rod drifts freely on air loss - the cushions soften the stroke ends but hold nothing - so pair a rod lock with any suspended load. CMSG or EMSG switches clamp straight onto the barrel because the magnet is factory-fitted.
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 MARU Stainless Steel Mini Cylinder MARU20X500S FAQ
No - 500 mm is the maximum standard stroke for the 20 mm bore, so it ships as a catalogue item. At 0.5 MPa it develops 157.0 N push and 131.9 N pull, rising to 219.8 N push at 0.7 MPa, with a theoretical ceiling of 32 kgf. Because of the long 8 mm rod, support the load in external guides and keep side forces off the cylinder.
The MA construction rolls a stainless-steel barrel between the aluminium covers with an internal stainless block, giving a riveted round body that stays sealed over the full 500 mm travel. Cushion needles at both ends let you tune the deceleration at each extremity, and the 30-800 mm/s speed range keeps the rod from whipping at full stroke.
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