Airtac MARU Stainless Steel Mini Cylinder MARU25X220S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X220S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 220mm 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.
- BoreØ25 mm
- Stroke220 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU25X220S
With a 220 mm stroke and a 25 mm bore, the MARU25X220S gives you 245.3 N of push at 0.5 MPa (343.4 N at 0.7 MPa) across a travel long enough to index a sliding tray or raise a gate in one move. It is double acting with a variable air cushion at both ends, so end-of-stroke shock stays under control even at higher cycle speeds. The U in the code means the front cover carries an up (top) mounting bracket rolled into the body itself - no separate flange or foot to buy.
The riveted stainless round barrel and 10 mm hard-chrome plated rod shrug off washdown and damp plant air far better than painted minis. Because the magnet is built in as standard, CMSG, DMSG or EMSG switches clip straight on for end-of-stroke signals. As a planning figure, expect roughly 147 N of real work at 0.5 MPa (about 60 percent of the rated push), and this bore lifts about 12 kg vertically with a 2:1 margin.
Airtac MARU Stainless Steel Mini Cylinder MARU25X220S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X220S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 220 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MARU25X220S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 25 | Bore size in mm. |
| ×220 | 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 MARU25X220S Is Used
Reject pusher on a snack-food conveyor
The 245.3 N push at 0.5 MPa is ample to sweep off-target packs from the lane, and the 220 mm stroke lets the pusher clear the belt edge and retract fully between good products.
Lid lift on a pail filling station
The up-mount bracket hangs the cylinder over the pail, and roughly 12 kg of vertical lift at a 2:1 margin raises even a heavy hinged lid smoothly through its arc.
Ejector on a bench punch press
Finished blanks are pushed clear of the die with about 147 N of working force at 0.5 MPa, while a CMSG switch on the standard magnet confirms each eject stroke is complete.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X220S the Right Cylinder?
Size against the 0.5 MPa force ladder: 157.0 N for a 20 mm MAR, 245.3 N push / 206.1 N pull here, 402.2 N at 32 mm. If the rod must stay put with the air off, remember a standard MAR free-floats on pressure changes - order a rod lock rather than relying on the cylinder. The integrated top bracket plus the standard magnet keep the BOM short: CMSG, DMSG or EMSG switches clip straight on, and over a 220 mm stroke the 10 mm rod should be guided externally against side loads.
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 MARU25X220S FAQ
At 0.5 MPa the 25 mm bore pushes 245.3 N and pulls 206.1 N; at 0.7 MPa push climbs to 343.4 N. The theoretical maximum is 50 kgf at 1.0 MPa. Working range is 0.15-1.0 MPa (22-145 psi) and rod speed 30-800 mm/s.
The barrel is a rolled stainless-steel tube and the 10 mm rod is hard-chrome plated to about 20 um, so mild corrosion, splashes and periodic washdown are non-issues compared with painted mini cylinders. Aluminium-alloy covers and a stainless block are riveted onto the tube, giving a sealed round body with no tie rods to loosen.
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