
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X20SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 20mm 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.
A 50 mm bore squeezed into a round stainless barrel gives this double-acting mini cylinder real clamping muscle: 981.3 N of push and 880.8 N of pull at 0.5 MPa, rising to 1373.8 N at 0.7 MPa. The aluminium covers are rolled onto the tube for a sealed, riveted body, and the 20 mm stroke keeps the footprint tight on clamp fixtures. Ports are 1/4" and the male rod thread is M14x1.5.
The magnet ships as standard, so a CMSG, DMSG or EMSG switch can be clipped on for end-of-stroke signalling with no special-order piston. The variable air cushion at both ends is dialled in with the needle screws, so a fast 20 mm clamp stops soft instead of hammering the covers. Working pressure spans 0.15-1.0 MPa (22-145 psi) against a 1.5 MPa (215 psi) proof rating, with travel from 30-800 mm/s. For load sizing, work from about 589 N of usable push at 0.5 MPa rather than the full rating - that margin protects seals and keeps the stroke repeatable.
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X20SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| 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.
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
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.
Holds aluminium housings against a drilling jig; the 20 mm stroke clears chip-swing room and about 589 N of practical force keeps parts seated.
Presses carton flaps during glue cure on a packing line, with both-end cushioning protecting the bond from shock at touchdown.
Short approach onto terminals where the stainless barrel tolerates flux fumes and occasional washdown far better than a painted body.
Compare before you commit: the 40 mm bore pushes 628.3 N at 0.5 MPa if this one is oversized, while the 63 mm bore reaches 1557.9 N for heavier clamps. The CM round-end back cover bolts flat to a fixed bracket, and FA flange or LB foot mounts can be added when the body itself needs securing. Keep in mind that with air off or the valve centred the rod is free to move - a rod lock or pilot check valve is required where the position must stay put.
Quick checklist
At 0.5 MPa the cylinder pushes 981.3 N and pulls 880.8 N; at 0.7 MPa these become 1373.8 N and 1233.1 N. The theoretical maximum at 1.0 MPa is 200.1 kgf. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), is proof tested to 1.5 MPa (215 psi), travels at 30-800 mm/s, and carries a built-in magnet for CMSG, DMSG and EMSG switches.
The CM cover presents a flat circular face that mounts directly against a machine plate, so no intermediate bracket is needed. Around it sits a stainless-steel barrel with a hard-chrome plated rod that shrugs off washdown, coolant mist and outdoor humidity far better than painted mini cylinders.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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