Airtac MARU Stainless Steel Mini Cylinder MARU40X40S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X40S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MARU40X40S
Equal bore and stroke give the MARU40X40S a compact 40 x 40 working face that slots into tight machine frames while still pushing hard: it is double acting with a variable air cushion at both ends and an integral up-mount bracket on the front cover, so nothing extra bolts beneath it. The rolled stainless barrel and hard-chrome plated 16 mm rod take mild washdown and outdoor damp in stride, unlike painted mini cylinders. Connections are 1/8" ports with an M12x1.25 male rod thread.
Push at 0.5 MPa measures 628.3 N; plan real duty around 377 N of that, or picture lifting about 32 kg straight up with margin. Both cushion needles are adjustable so the short stroke stops softly at any speed up to 800 mm/s, and the in-built magnet accepts CMSG, DMSG and EMSG switches without options. Conditions: 0.15-1.0 MPa (22-145 psi), -20 to +70 C, air filtered to 40 um.
Airtac MARU Stainless Steel Mini Cylinder MARU40X40S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X40S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MARU40X40S
| 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. |
| ×40 | 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 MARU40X40S Is Used
Press die ejector
Knocking small stamped brackets out of a bench-press die: 628.3 N at 0.5 MPa clears the nest, and the 40 mm stroke matches shallow die pockets.
Capping head press
Pressing snap caps onto dairy bottles - the cushioned stop protects the cap cradle at line speeds, with an EMSG switch confirming bottom dwell.
Vision station pusher
Rejecting flawed parts at a camera checkpoint; the fitted magnet feeds a DMSG sensor so the PLC knows the pusher retracted before the next shot.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X40S the Right Cylinder?
Bench it against alternatives: a 32 mm bore yields 402.2 N and a 50 mm bore 981.3 N at 0.5 MPa, placing this 40 mm unit at 628.3 N. The 40 mm stroke keeps rod overhang short; still avoid side thrust on the 16 mm rod. If your cycle must hold mid-position through a power loss, this cylinder will not - fit a rod lock instead. An integral U bracket plus the standard magnet for CMSG / DMSG / EMSG sensors complete the package.
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 MARU40X40S FAQ
Push is 628.3 N and pull 527.8 N at 0.5 MPa; at 0.7 MPa push is 879.6 N, and the theoretical maximum stands at 128.1 kgf. Rates hold across 0.15-1.0 MPa (22-145 psi) supply and a 30-800 mm/s speed range.
It does not - like any standard double-acting cushioned cylinder the piston drifts when pressure drops, because the cushion only softens the stroke end. The U bracket handles mounting, but for held positions add a separate rod-lock unit.
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