Airtac MARU Stainless Steel Mini Cylinder MARU40X90S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X90S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 90mm 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.
- BoreØ40 mm
- Stroke90 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU40X90S
Few mini cylinders in this size class reach 90 mm of stroke while keeping a compact round barrel; the MARU40X90S manages both. It is double acting, the cushions at both ends are adjustable, and the top mount is part of the cylinder itself rather than an accessory. The 40 mm bore is good for 628 N of push at 0.5 MPa and 880 N at 0.7 MPa, with a theoretical ceiling of 128 kgf.
Wet or dusty shops favour the stainless tube and the chrome-plated rod, which shrug off light corrosion between washes far better than painted mini bodies. The built-in magnet means CMSG / DMSG / EMSG switches clip onto the barrel with no piston upgrade. In practice, budget roughly 377 N of real work at 0.5 MPa - call it 32 kg of vertical lift once a 2:1 margin is applied.
Airtac MARU Stainless Steel Mini Cylinder MARU40X90S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X90S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MARU40X90S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 40 | Bore size in mm. |
| ×90 | 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 MARU40X90S Is Used
Sample shuttle on lab machines
Advances a sample tray 90 mm between testing stations on an analytical instrument, with the cushion ending each move quietly.
Chute reject ejector
Kicks rejected fasteners off a bowl-feeder inspection chute, where a decisive 628 N push clears the track on every cycle.
Oven door hold-down
Clamps a small oven or spray-booth door shut, with the stainless barrel coping with steam and washdown that would blister a painted body.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X90S the Right Cylinder?
Compare 0.5 MPa push figures and the 40 mm bore lands between the 32 mm MAR (402 N) and the 50 mm MAR (981 N). If the load must sit at mid-stroke when air fails, remember the piston is free to move - the cushions are for shock only, so specify a rod lock separately. Pick the F front-flange variant if the mounting face sits behind the cylinder; the U type here mounts upward, and I or Y rod knuckles still thread onto the M12x1.25 rod.
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 MARU40X90S FAQ
Yes: 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a theoretical 128 kgf maximum at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi) and proof pressure is 1.5 MPa (215 psi).
The body is a stainless-steel round tube riveted to aluminium covers, and the 16 mm rod is hard-chrome plated, so mild corrosion, coolant mist and washdown cause far less trouble than on painted mini cylinders. Speeds of 30-800 mm/s stay smooth once the cushions are adjusted.
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