
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU63X125S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø63mm bore and 125mm 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.
Inside the MARU63X125S the aluminium covers and a stainless block are rolled onto a stainless barrel, giving a sealed round body that stays tight through washdown cycles. The 16 mm hard-chromed rod runs on a two-way seal that also stores grease, cutting dry-run wear on long shifts. A built-in magnet comes standard, so CMSG, DMSG and EMSG switches clip straight on.
Double acting with a variable cushion at both ends, this 63 mm bore delivers 1558 N push and 1457 N pull at 0.5 MPa. For vertical work that translates to lifting about 79 kg with a 2:1 margin, enough for a loaded fixture or a small gate. The adjustable cushions let you run the 125 mm stroke at speed and still land the load gently.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU63X125S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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. |
| ×125 | 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.
Swings a slide gate on a grain transfer line; 1558 N at 0.5 MPa shears the grain column while the 125 mm stroke gives full gate travel.
Raises palletized sub-assemblies between levels, lifting about 79 kg per unit with margin; the top bracket bolts the cylinder under the platform frame.
Withdraws a core pin on an injection mold for plastic housings; cushions at both ends stop the 125 mm pull snapping the pin at release.
Step down to 50 mm (981 N push) or 40 mm (628 N push) at 0.5 MPa when the load is light, because the 63 mm bore is the largest in the series and uses the most air. Keep in mind the MAR holds nothing when air is lost - the piston simply follows the load - so specify a rod lock for held positions. The integrated U bracket needs no separate flange, and at 125 mm of stroke keep side loads off the rod with an external guide.
Quick checklist
Use 1557.9 N push and 1457.4 N pull at 0.5 MPa, or 2181.0 N push and 2040.3 N pull at 0.7 MPa; the theoretical ceiling is 317.7 kgf at 1.0 MPa. The rod is 16 mm, the port thread is 1/4 in, supply runs 0.15-1.0 MPa (22-145 psi) and speed spans 30-800 mm/s.
Needle screws at each end throttle the exhaust air in the last millimetres of travel, so you dial out end-of-stroke shock after installation. That lets the 125 mm stroke run near the top of the 30-800 mm/s speed band with heavier loads, without the covers taking the hit.
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