
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU63X400S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø63mm bore and 400mm 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.
Four hundred millimetres of powered travel is where the MARU63X400S earns its keep, backed by 1557.9 N of push and 1457.4 N of pull at 0.5 MPa - the top force class of AirTAC's round-body MAR family. Double acting and cushioned at both ends, it mounts through its own up-front bracket riveted to the stainless barrel.
Treat 935 N as the realistic continuous push, equivalent to lifting about 79 kg vertically with a 2:1 safety margin. The longer the stroke, the more side load matters: keep the rod guided and aligned so the hard-chrome plating and stainless tube stay true over 400 mm. A standard magnet is fitted, so CMSG, DMSG or EMSG switches read position without special-order hardware.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU63X400S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 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. |
| 63 | Bore size in mm. |
| ×400 | 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.
Slides a heavy scrap gate 400 mm open beneath a stamping press, with the variable cushions absorbing the gate's momentum at each end.
Pushes cartons off a sortation lane in a distribution hub; 400 mm clears a full lane width and the stainless body tolerates humid dockside air.
Extends a 400 mm stop arm that halts a tote lift at the pick face of an automated warehouse, cushioned for a soft, repeatable catch.
Drop to a 50 mm MAR for 981.3 N at 0.5 MPa if the load is light; 63 mm is the largest bore AirTAC offers in this series. The cylinder will not hold a mid-stroke load when air pressure falls - spec a rod lock for that. The integrated U bracket replaces any flange or foot accessory, CMSG or EMSG switches pick up the standard magnet, and strokes to 500 mm are standard, so 400 mm ships off the shelf.
Quick checklist
Push 1557.9 N and pull 1457.4 N at 0.5 MPa; push 2181.0 N and pull 2040.3 N at 0.7 MPa; theoretical maximum 317.7 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, and this 63 mm bore uses 1/4 inch ports.
The barrel is stainless steel with aluminium-alloy covers rolled on, and the 16 mm rod is carbon steel hard-chrome plated to 20 um. That combination handles damp shops and mild washdown far better than painted minis. Cushions are variable at both ends - adjust the needle screws on commissioning for a soft 400 mm stop.
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