Airtac MARU Stainless Steel Mini Cylinder MARU50X125S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU50X125S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø50mm bore and 125mm stroke, 1/4" 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.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU50X125S
Double acting with a variable cushion and a top bracket rolled into the barrel, the MARU50X125S brings 981 N of push at 0.5 MPa to a 50 mm stainless round body. The high-precision stainless tube and 16 mm hard-chrome plated rod shrug off mild corrosion and washdown, a real edge over painted-steel minis in damp, food or outdoor spots. Air works the rod both ways, and the needle screws at each end let you dial the cushion so faster cycling does not hammer the covers.
Plan on about 589 N of real work at 0.5 MPa instead of the full 981 N rating; that margin protects seal and cushion life. Vertically, the same figure converts to roughly 100 kg of static capability, or lift about 50 kg if you want a 2:1 margin. The magnet is already inside as standard, so CMSG, DMSG or EMSG switches drop on without ordering a special piston.
Airtac MARU Stainless Steel Mini Cylinder MARU50X125S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU50X125S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MARU50X125S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 50 | Bore size in mm. |
| ×125 | 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 MARU50X125S Is Used
Carton press-down station
Strokes 125 mm to press flaps or inserts into cartons on a packing line, with the both-end cushion taking the shock at the bottom of each cycle.
Fixture clamp on a machining line
Top-mount bracket clamps jigs or aluminium fixtures ahead of a drilling or tapping head, holding about 589 N of useful force at 0.5 MPa.
Small parts lift tower
Vertical mast motion for tote or tray transfer, lifting roughly 50 kg with a 2:1 design margin on the 981 N extend force.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU50X125S the Right Cylinder?
Compare the 40 mm bore, which pushes 628 N at 0.5 MPa, if your load is under about 60 kg; step up to the 63 mm bore at 1558 N for heavier dies. A plain MAR drifts if the air drops - the cushion softens the stop but holds nothing - so fit a rod lock where position must persist. The integrated top bracket bolts the body straight to the machine plate, I and Y knuckles still thread onto the M14x1.5 rod, and the 1/4 inch port serves this 50 mm bore.
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 MARU50X125S FAQ
At 0.5 MPa the piston delivers 981 N on extend and 881 N on retract; at 0.7 MPa that rises to 1374 N extend. The theoretical maximum is about 200 kgf at 1.0 MPa. This 50 mm bore uses a 1/4 inch port and an M14x1.5 rod thread.
Yes. The high-precision stainless tube resists mild corrosion and washdown far better than painted-steel minis, and the 20 um hard-chrome plated rod adds wear life. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
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