
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF50X300S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø50mm bore and 300mm 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.
At 300 mm stroke the MARF50X300S keeps the MAR's compact riveted construction: stainless tube, aluminium-alloy covers and a hard-chrome plated 16 mm rod, a build that shrugs off the mild corrosion that kills painted minis in damp or outdoor cells. Push is 981 N at 0.5 MPa and pull 881 N, with a variable cushion at both ends to dial out end-of-stroke shock.
Vertically this bore can lift about 100 kg at 0.5 MPa; plan on 50 kg with a 2:1 margin and match part weights accordingly. The F-coded front flange is built into the cylinder itself, and the magnet ships as standard, so adding a CMSG, DMSG or EMSG switch needs no special order.
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF50X300S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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. |
| ×300 | 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.
Advances sheet blanks 300 mm into a stamping die; roughly 589 N of working push handles 3 mm steel blanks.
Raises a divertor arm on a packaging conveyor, sized for vertical duty around 50 kg with a 2:1 margin.
Ejects baskets from the unload end of a wash tunnel; the stainless barrel resists detergent splash day after day.
Sizing neighbours: a 40 mm MAR gives 628 N at 0.5 MPa and a 63 mm MAR gives 1558 N; stay at 50 mm for loads near the 981 N mark. At 300 mm keep the payload guided externally, because long thin rods resent side thrust at the top of the 30-800 mm/s speed range. Position holding is not built in: when pressure is removed the rod settles under load, so specify a rod lock for fail-safe stop. The front-flange mount is integral to the cover, and the built-in magnet accepts CMSG, DMSG and EMSG switches out of the box.
Quick checklist
At 0.5 MPa it pushes 981.3 N and pulls 880.8 N; at 0.7 MPa push climbs to 1373.8 N. The theoretical maximum for the 50 mm bore is 200.1 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, and the 300 mm stroke is standard within the 500 mm maximum.
Every MAR ships with the piston magnet already fitted as standard, so AirTAC CMSG, DMSG and EMSG reed or electronic switches clip straight onto the stainless barrel for end-of-stroke or mid-stroke signalling. No special-order piston or modification is required.
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