Airtac MARU Stainless Steel Mini Cylinder MARU40X50S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X50S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MARU40X50S
Short travel changes the economics of a 40 mm bore: the MARU40X50S packs 628 N of push at 0.5 MPa into just 50 mm of stroke, inside a riveted round-body shell that carries its own up-mount bracket - no loose flange to buy or align. Double-acting with a variable air cushion at both ends, it runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
The realistic working figure is about 377 N of push, which still presses or clamps small steel parts with authority and lifts roughly 32 kg vertically at a 2:1 margin. A stainless barrel with a hard-chromed 16 mm rod shrugs off coolant splash that corrodes painted minis, while the piston magnet included as standard means CMSG / DMSG / EMSG switches drop on without any special-order piston.
Airtac MARU Stainless Steel Mini Cylinder MARU40X50S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X50S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MARU40X50S
| 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. |
| ×50 | 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 MARU40X50S Is Used
Clamp fixture on a drilling jig
The short stroke pulls a swing clamp shut, and 377 N of working force holds steel plates hard against the drill bushing.
Lid press on a small filling bench
Snap caps down with 628 N of push in one 50 mm hit, the end cushion absorbing the seating shock on each bottle.
Part ejector under a stamping die
The up-mount bolts directly to the die shoe, and a CMSG switch on the barrel confirms every part has been kicked clear.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X50S the Right Cylinder?
If 628 N outruns the fixture, the 32 mm MAR delivers 402 N at 0.5 MPa; if the press needs more than the roughly 377 N working band, move to the 50 mm bore at 981 N. With only 50 mm of stroke, side load is rarely the issue - alignment is - so seat the front cover square to the load. Note that a plain MAR releases the load when air drops; the piston coasts rather than holds, so use a mechanical stop or a rod lock for dwell. The up-mount bolts straight to the jig base, and CMSG / DMSG / EMSG switches clip anywhere along the stainless tube.
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 MARU40X50S FAQ
Bore 40 mm, stroke 50 mm, double acting with an adjustable cushion at each end and an integrated top bracket. Push 628 N, pull 528 N at 0.5 MPa; push 880 N, pull 739 N at 0.7 MPa; 128.1 kgf theoretical maximum at 1.0 MPa. Rod 16 mm with M12x1.25 thread, 1/8" air ports, 0.15-1.0 MPa (22-145 psi) pressure, 30-800 mm/s speed.
The front cover carries the U-type up-mount, so the cylinder bolts straight to the jig or bench without a purchased flange; I and Y knuckle joints still fit the M12x1.25 rod end. Because the piston magnet is standard, CMSG, DMSG and EMSG switches clip along the stainless barrel for end-of-stroke feedback - no modified piston required.
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