Airtac MARU Stainless Steel Mini Cylinder MARU50X55S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU50X55S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø50mm bore and 55mm 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
- Stroke55 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 MARU50X55S
Married to a 55 mm stroke, the 50 mm bore of the MARU50X55S puts 981.3 N of push and 880.8 N of pull at 0.5 MPa into a compact round body, with 1373.8 N of push available at 0.7 MPa. A variable cushion at each end keeps short, quick cycles from ringing the covers.
The stainless tube and 20 um hard-chrome rod shrug off coolant mist and humid air, and the top mounting bracket is riveted into the front cover during assembly - nothing to bolt on later. Thinking in lifting terms, this bore develops roughly 100 kg of vertical force at 0.5 MPa; plan around 50 kg and the drive keeps a 2:1 reserve. Every unit ships with its magnet already in the piston for CMSG, DMSG or EMSG switches.
Airtac MARU Stainless Steel Mini Cylinder MARU50X55S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU50X55S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 MARU50X55S
| 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. |
| ×55 | 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 MARU50X55S Is Used
Rotary-index detente on a small filler
Locks a dial-plate indexer at each filling station; the 55 mm travel matches the detente depth and the cushion kills the clunk.
Vial gate on a lab filler
Gates single vials into a tray nest, using 880.8 N of pull for a crisp reset between batches.
Connector press-in head
Seats a DIN-rail connector into a control-panel backplate with the short 55 mm insertion stroke.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU50X55S the Right Cylinder?
A 40 mm bore covers the same stroke with 628.3 N at 0.5 MPa if force demand is lower; the 63 mm bore lifts output to 1557.9 N when it is not. The 55 mm stroke sits inside the 500 mm standard range for this bore, so no made-to-order barrel is needed. Run speeds anywhere from 30-800 mm/s after setting the cushion needles.
Need the position held through a power loss? The piston will not manage that - only a rod lock stops the load from back-driving it. The I and Y rod knuckles fit the 16 mm rod if a swinging link is required.
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 MARU50X55S FAQ
At 0.5 MPa: 981.3 N push and 880.8 N pull. At 0.7 MPa: 1373.8 N push and 1233.1 N pull. Theoretical peak is 200.1 kgf at 1.0 MPa. Air supply runs 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi).
The U bracket is riveted into the front cover at the factory, so the cylinder bolts directly to the machine with no separate flange or foot to order. Rod knuckles (I or Y types) still fit the 16 mm rod, and the standard magnet accepts CMSG, DMSG and EMSG switches.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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