
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X250SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 250mm 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.
Round-body construction, rolled and riveted rather than fastened with tie-rods, keeps the MAC50X250SCM sealed along its full 250 mm travel - the stainless barrel shrugs off mild corrosion and splash. Pushing with 981.3 N at 0.5 MPa (1373.8 N at 0.7 MPa), this double-acting Dia 50 cylinder retracts with 880.8 N and carries a theoretical ceiling of 200.1 kgf at 1.0 MPa.
The variable air cushion at both ends is needle-adjusted: open the screws on first run, then dial them in to soften impacts as speed climbs toward 800 mm/s. For real work count on about 589 N at 0.5 MPa, enough to raise a 50 kg load vertically at a 2:1 margin. Since the piston is magnetic as shipped, CMSG, DMSG and EMSG switches mount without special ordering. Rated 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), air filtered to 40 um.
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X250SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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. |
| ×250 | 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.
A pin through the CM round-end cover drives a swing clamp on a welding jig; needle cushions stop the clamp arm without a metal-to-metal bang.
Pushes packed cartons off a checkweigher belt with 981 N at 0.5 MPa, cycling anywhere from 30 to 800 mm/s as the line rate demands.
The stainless barrel and chrome rod cope with splash in a food-grade mixing skid, lifting about 50 kg of agitator assembly between CIP cycles.
The 40 mm frame delivers 628.3 N push at 0.5 MPa and the 63 mm frame 1557.9 N, so bore 50 at 981.3 N is the mid choice for loads around 50 kg. Its CM round-end cover suits pin-jointed linkage mounts without adapters; FA flange, LB foot and SDB pivot brackets remain options. Remember that a vented cylinder cannot park its load - the rod simply drifts - so add a check valve or rod lock where a position must persist. Across 250 mm of travel, external guiding is wise: side loads quickly bend a Dia 16 rod.
Quick checklist
Rated output is 981.3 N push and 880.8 N pull at 0.5 MPa, climbing to 1373.8 N push at 0.7 MPa; the theoretical ceiling is 200.1 kgf at 1.0 MPa. Proof pressure is 1.5 MPa (215 psi) and stroke length is 250 mm.
Back both needle screws fully out before the first stroke, then close them gradually while cycling. The cushions are variable at each end, so you can slow the last few millimetres of travel at 30-800 mm/s and stop the long 250 mm stroke from hammering the aluminium covers.
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