
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU50X75S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø50mm bore and 75mm 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.
Need a 75 mm throw in a tight spot? The MARU50X75S pairs a 50 mm bore with an up-facing bracket, giving 981.3 N push and 880.8 N pull at 0.5 MPa (1373.8 N on extension at 0.7 MPa). The variable air cushion at each end is tuned with needle screws, so faster cycles or heavier tooling land softly instead of hammering the covers.
With its grease-retaining two-way piston seal and rolled stainless barrel, this riveted round-body unit keeps working in humid workshops where painted minis rust. On the extend stroke it can lift roughly 100 kg vertically, or plan around 50 kg when you want a 2:1 margin. Mounting is integral - the U front cover bolts to the machine directly - and the piston magnet that comes standard accepts CMSG / DMSG / EMSG switches.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU50X75S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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. |
| ×75 | 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.
75 mm of travel flips parcels between chutes; at 981.3 N the rod handles parcel weight without stalling mid-throw.
Pull force of 880.8 N at 0.5 MPa retracts the tip assembly while the top bracket anchors the cylinder to the gantry.
The stainless tube survives syrupy, sticky splash zones, and the standard magnet feeds an EMSG switch for reject counting.
Compare before you buy: 40 mm gives 628.3 N at 0.5 MPa for lighter clamps, while 63 mm reaches 1557.9 N for stiffer work. The 75 mm throw is a standard length, well inside the 500 mm ceiling for this bore, but keep side loads off the 16 mm rod and guide the tooling externally. If your process must hold position through an air drop, this cylinder relaxes when pressure goes - a separate rod lock is the answer. All 50 mm bores connect via 1/4" ports.
Quick checklist
Push at 0.5 MPa is 981.3 N, pull 880.8 N. At 0.7 MPa expect 1373.8 N push and 1233.1 N pull, with a 200.1 kgf theoretical maximum at 1.0 MPa. Stroke is 75 mm on a 16 mm chrome rod with M14x1.5 thread, air connects via 1/4" ports, pressure spans 0.15-1.0 MPa (22-145 psi) and proof pressure is 1.5 MPa (215 psi).
Both end covers carry a variable air cushion. Turn the needle screws in or out during commissioning until the load decelerates smoothly - that lets you run up to 800 mm/s or carry heavier tooling without shock loading the aluminium covers. The cushion only softens the stroke ends; it is not a brake.
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