Airtac MARU Stainless Steel Mini Cylinder MARU50X40S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU50X40S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø50mm bore and 40mm 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
- Stroke40 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 MARU50X40S
Short strokes and serious force meet in the MARU50X40S, a 50 mm double-acting MAR cylinder with just 40 mm of travel and the up-mount bracket moulded into its front cover. Expect 981 N of push at 0.5 MPa (about 881 N pulling) across a 0.15-1.0 MPa (22-145 psi) supply band.
Because the barrel is stainless and the rod carries 20 um of hard chrome, the body stands up to splashes, humidity and periodic rinse-down that rust painted-steel minis. Two needle screws tune the cushion at each end, so you can cycle hard against a fixture without hammering the covers. On usable output, plan around 590 N of real work at 0.5 MPa rather than the full 981 N rating, and remember the magnet is already installed for CMSG, DMSG or EMSG switches.
Airtac MARU Stainless Steel Mini Cylinder MARU50X40S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU50X40S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 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 MARU50X40S
| 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. |
| ×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 MARU50X40S Is Used
Weld cell locating pin
Raise and lower a locating pin 40 mm in a weld fixture, the cushioned seating protecting the pin seat through thousands of cycles.
Gripper fixture actuator
Close a pneumatic gripper or vise jaw on an assembly bench, gripping with up to 590 N of clamping effort at 0.5 MPa.
Changeover lock pin
Drive a locking pin into a quick-change die cart or pallet clamp, 40 mm in and out with a smooth, cushioned seat each time.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU50X40S the Right Cylinder?
Against its neighbours: the 40 mm bore produces 628 N at 0.5 MPa and the 63 mm bore 1558 N, so this model sits squarely in the middle on force. With only 40 mm of stroke the piston returns to a fixed rest point and will not hold position on lost air pressure - use a rod lock if that matters. Cycles can run anywhere from 30 to 800 mm/s. The top flange is part of the cylinder itself, so no FA or LB accessory applies to MAR, while I and Y knuckles still fit the M14x1.5 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 MARU50X40S FAQ
Design around 981 N push and 881 N pull at 0.5 MPa, or 1374 N push and 1233 N pull at 0.7 MPa; the theoretical peak is 200 kgf at 1.0 MPa. Bore 50 mm means 1/4" air ports and an M14x1.5 male rod thread as standard.
The riveted stainless barrel with its hard-chrome plated rod tolerates splash, humidity and occasional washdown far better than painted or bare aluminium minis, and the variable cushion at both ends absorbs the shock of hard clamping cycles so the covers last. The piston still drifts if air is lost - the cushion is not a brake.
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