Airtac MARU Stainless Steel Mini Cylinder MARU20X350S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X350S is a genuine double acting + cushion (up mount) 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 (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU20X350S
When a compact 20 mm cylinder is too short for the travel, this 350 mm stroke MAR keeps the same small bore in a longer body: 157 N forward, 132 N back at 0.5 MPa, double acting with variable cushions you can tune to stop the rod quietly even near the top of the 30-800 mm/s range. The up-facing bracket on the front cover is integral to the design, so it hangs from a machine plate without buying an accessory mount.
A long 8 mm rod needs friendly treatment - keep side loads off it and guide the part - and the stainless barrel with its hard-chrome plated rod will hold up in damp or washdown-adjacent corners. Budget roughly 94 N of real push at 0.5 MPa, or about 8 kg of vertical lift with a 2:1 margin; the piston magnet comes standard for CMSG, DMSG or EMSG switch fitting.
Airtac MARU Stainless Steel Mini Cylinder MARU20X350S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X350S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 350 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 MARU20X350S
| 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. |
| ×350 | 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 MARU20X350S Is Used
Sampling probe lift
Raises a water-quality probe 350 mm clear of a river monitoring station between readings, the stainless body happy in permanent outdoor duty.
Snack chute diverter
Flips a pouch diverter gate between two chutes on a snack-food packaging line, cushioned both ways so the gate never slams.
Switch life-test actuator
Cycles an automotive toggle switch on a durability rig, the long stroke clearing the fixture's load path between cycles.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X350S the Right Cylinder?
The 20 mm bore gives 157 N of push at 0.5 MPa; a 25 mm MAR raises that to 245 N and a 32 mm to 402 N, so choose by load rather than fitting size. At 350 mm the stroke is well inside the 500 mm standard range, though the long 8 mm rod still deserves external guidance to keep bending loads off it.
PT is the default thread in the 1/8" ports with G and NPT available to order, and the U bracket is part of the front cover - no accessory foot required. Because nothing in a plain MAR holds position on air loss, plan a rod lock for any clamped or lifted state; the built-in magnet already supports CMSG, DMSG and EMSG sensing.
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 MARU20X350S FAQ
Force output: 157.0 N forward and 131.9 N back at 0.5 MPa, climbing to 219.8 N and 184.7 N at 0.7 MPa, with 32.0 kgf theoretical at 1.0 MPa. Operating window is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, the 1/8" ports are PT threaded by default, and the rod thread is M8x1.25.
Both ends carry an adjustable air cushion. Open the needle screws fully at startup, then close them slowly until the load lands quietly - that protects the aluminium covers and lets you run faster or carry more without end-of-stroke hammering. Recheck the setting if the supply pressure or load changes.
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