
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU50X350S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø50mm bore and 350mm 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.
Long-travel work is where the MARU50X350S earns its place: a 50 mm double-acting MAR cylinder with 350 mm of stroke, the up-mount flange formed into the front cover, and a 30-800 mm/s speed band. Fed 0.15-1.0 MPa (22-145 psi), it produces 981 N of push and 881 N of pull at 0.5 MPa.
Its stainless round barrel shrugs off condensation and mild washdown that would blister a painted mini, while the 20 um hard-chrome plating keeps the rod's sealing surfaces smooth across the full 350 mm sweep. If you budget 60 percent of the rating, you can plan on about 590 N of real work at 0.5 MPa. The magnet comes fitted as standard, so DMSG or EMSG switches drop on for mid-stroke and end-position feedback.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU50X350S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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.
| 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.
| 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. |
| ×350 | 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.
Slide a 350 mm machine-guard door open and closed on a packaging line, with cushioned stops protecting the 981 N drive at each end.
Kick formed parts out of a deep draw die where the ejector plate must travel the full 350 mm before it makes contact.
Push cartons across a wide transfer table between two conveyor lanes, sized on roughly 590 N of usable push at 0.5 MPa.
Size check: a 40 mm bore gives 628 N at 0.5 MPa and a 63 mm bore gives 1558 N, so the 50 mm bore sits between them for this 350 mm travel. Over a stroke this long, keep side loads off the 16 mm rod - guide the load externally or the rod will bend. With air removed the piston floats freely; a rod lock is the fix if the load must hold mid-travel. The integrated top bracket needs no LB foot or separate flange, and I or Y knuckles fit the M14x1.5 thread.
Quick checklist
Force stays constant along the travel: 981 N push and 881 N pull at 0.5 MPa, climbing to 1374 N and 1233 N at 0.7 MPa, with about 200 kgf theoretical at 1.0 MPa. The 1/4" ports suit all 50 mm bores.
It holds nothing on its own - cut the air and the 16 mm rod drifts with the load, so fit a rod lock where position must persist. It also carries no internal side-load guide; align the load on the M14x1.5 thread and support it externally over the 350 mm travel. The needle-screw cushion only softens the last few millimetres at each end.
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