Airtac MARU Stainless Steel Mini Cylinder MARU20X210S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X210S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 210mm 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
- Stroke210 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 MARU20X210S
Reaching 210 mm from a bore that measures just 20 mm, this double-acting MAR cylinder swings 157 N of push at 0.5 MPa and 219.8 N at 0.7 MPa, pulling back with 131.9 N. Needle-adjustable cushions at each end tame the stop over that long travel, at speeds from 30 to 800 mm/s.
Construction is the classic MA recipe: a stainless barrel rolled together with aluminium-alloy covers and a stainless block, with a hard-chromed rod that stands up to washdown corners. The up-facing bracket is part of the front cover, not a bolt-on. On real jobs plan around 94 N of continuous push at 0.5 MPa, which translates to hoisting roughly 8 kg against gravity with margin to spare.
Airtac MARU Stainless Steel Mini Cylinder MARU20X210S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X210S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 210 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 MARU20X210S
| 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. |
| ×210 | 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 MARU20X210S Is Used
Tote lifts in pick stations
Raising a light tote shelf 210 mm in a goods-to-person picking cell, where the 8 kg-class vertical lift figure matches typical tote weights.
Stretch mandrel in tube bending
Advancing an internal mandrel 210 mm into thin-wall tube before the bend, with end cushioning protecting the tube mouth.
Sampling sluice actuation
Opening a small water-sampling sluice gate where daily splashes meet the stainless body without paint damage.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X210S the Right Cylinder?
If 157 N at 0.5 MPa is tight for your 210 mm duty, compare the 25 mm MAR at 245.3 N before committing - the envelope grows only slightly. Long strokes on a thin rod invite buckling and side loading, so guide the payload externally and keep the 8 mm rod free of radial forces. Because nothing locks the piston when pressure falls, add a rod lock anywhere a load could drop or a clamp could open. The standard magnet signals via CMSG, DMSG or EMSG switches fitted on the tube.
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 MARU20X210S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; theoretical maximum 32 kgf at 1.0 MPa. Operating window 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, 1/8" ports, M8x1.25 rod thread.
No. The MAR carries its own front bracket - on this U version the mount faces upward from the front cover - so the cylinder bolts straight onto the machine plate with no separate flange or foot, and rod knuckles still fit the 8 mm rod.
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