
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF50X270S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø50mm bore and 270mm 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.
With 270 mm of cushioned travel, the MARF50X270S is a 50 mm bore, front-flange MAR: a stainless round barrel rolled into a sealed riveted body with aluminium covers and a hard-chrome plated 16 mm rod. Double acting by design, it extends with 981 N and retracts with 881 N at 0.5 MPa, while the needle screws at each end let you soften the arrival.
The mounting bracket is integral, so you bolt the front-cover flange straight to the machine and skip any separate flange or foot. Budget about 589 N of true working push at 0.5 MPa, six tenths of the rating, and note that the standard piston magnet means a CMSG, DMSG or EMSG switch can signal either end without modification.
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF50X270S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 270 mm |
| Acting type | Double acting + cushion (front 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). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 50 | Bore size in mm. |
| ×270 | 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.
Drives sliding doors on industrial wash cabinets; the stainless barrel tolerates the wet zone it works in.
Opens and closes sliding machine guards on a CNC cell across the full 270 mm opening.
Pushes the slide gate under a 200 L powder hopper, with the cushion easing the gate into its seat.
Force-wise the choice brackets like this: a 40 mm flange MAR pushes 628 N at 0.5 MPa, the 63 mm one 1558 N, and this 50 mm bore splits them at 981 N. A 270 mm stroke on a 16 mm rod means side loads should be guided by the machine, not the rod, or you risk bending and premature seal wear. Holding: if the air supply fails mid-stroke the rod will coast to wherever the load takes it, so a rod lock cylinder is the fail-safe answer. The integrated front flange needs no bracket kit, and the factory-fitted magnet pairs with CMSG, DMSG and EMSG switches for position checks along the travel.
Quick checklist
Push at 0.5 MPa is 981.3 N and pull is 880.8 N; at 0.7 MPa push reaches 1373.8 N. The theoretical peak for this 50 mm bore is 200.1 kgf at 1.0 MPa. It operates on 0.15-1.0 MPa (22-145 psi) air, takes 1.5 MPa (215 psi) proof pressure, runs 30-800 mm/s, and the 270 mm stroke is standard within the 500 mm limit.
No. The F code means the front-flange bracket is part of the front cover itself, so the cylinder bolts directly to the machine; MAR does not take separate FA, LB or SDB feet. I and Y rod knuckles still thread onto the 16 mm M14x1.5 rod.
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