Airtac MARU Stainless Steel Mini Cylinder MARU20X300S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X300S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 300mm 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
- Stroke300 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 MARU20X300S
With 300 mm of travel, the MARU20X300S stretches AirTAC's round-body MAR platform to long-reach work: double acting, with a variable air cushion at both ends and an up-mount bracket already formed into the front cover. The 20 mm bore pushes 157.0 N at 0.5 MPa (working pressure 0.15-1.0 MPa (22-145 psi)).
The rolled stainless barrel and the 20 um hard-chrome plated 8 mm rod shrug off washdown and damp shop air, and the magnet is fitted as standard, so CMSG, DMSG or EMSG switches snap onto the barrel for position feedback. Working from the 157 N push figure, plan real work at about 94 N (roughly 0.6 of the rating) and the cylinder keeps margin in hand all shift.
Airtac MARU Stainless Steel Mini Cylinder MARU20X300S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X300S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MARU20X300S
| 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. |
| ×300 | 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 MARU20X300S Is Used
Saw outfeed pusher
Sweeps cut timber or extrusion off a cross-cut saw table across 300 mm into the collection chute, guided by the table itself.
Parts elevator riser
Lifts small bins up a short vertical guide on an assembly feeder; keep the payload near 8 kg or lighter for a comfortable margin.
Reject gate actuator
Swings a reject flap on a bottling line between good and scrap lanes, running up to 800 mm/s with the cushion set soft.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X300S the Right Cylinder?
At 300 mm this is the long-reach end of the 20 mm bore, the smallest MAR offers (there is no 16 mm size). If 157.0 N at 0.5 MPa feels thin, the 25 mm bore delivers 245.3 N and a 32 mm bore 402.2 N in the same MAR form. Keep side loads off the 8 mm rod at this extension - guide the load externally or rod bending will show up before the stroke ends. Like any double-acting cylinder without a lock, the piston drifts if supply air drops, so add a rod lock where a held position matters. Speed range is 30-800 mm/s.
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 MARU20X300S FAQ
At 0.5 MPa it pushes 157.0 N and pulls 131.9 N; at 0.7 MPa push rises to 219.8 N. The theoretical maximum is 32 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi) and speed spans 30-800 mm/s.
No. The magnet is fitted as standard on every MAR, so CMSG, DMSG or EMSG switches clamp straight onto the stainless barrel to signal end positions without any special order.
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