
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X450SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 450mm 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.
Four hundred and fifty millimetres of cushioned throw from a bore 50 barrel is the headline, backed by 981 N of push and 880.8 N of pull at 0.5 MPa. Because the barrel is stainless and the 16 mm rod carries 20 um of hard-chrome plating, this mini keeps sealing and sliding through washdown, mist and outdoor damp that ruin painted-steel minis, while the two-way piston seal traps grease for longer service intervals. The covers are riveted and rolled onto the tube, leaving no external fasteners to shake loose.
The variable air cushion at both ends lets that long stroke stop softly - crack the needle screws open on commissioning, then tune them to the load. A magnet comes built in as standard, so CMSG / DMSG / EMSG switches clip on anywhere along the barrel with no special piston. For sizing, treat about 589 N as the honest continuous push at 0.5 MPa rather than the full 981 N rating.
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X450SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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. |
| ×450 | 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.
Swinging a stainless diverter gate across a dairy bottling line: 981 N at 0.5 MPa overcomes guide friction on loaded trays, and the 450 mm stroke clears the full lane.
Raising a heavy mash-tun lid about 450 mm - this bore 50 class manages roughly 100 kg of vertical lift at 0.5 MPa, and the air cushion settles the lid without a bang.
Driving a spring-hinged access door on a timber planer, where the U flat-end cover bolts flat to the frame and the chrome rod shrugs off dust and damp.
Neighbouring bores set the frame: the 40 mm MAC manages 628.3 N push at 0.5 MPa and the 63 mm reaches 1557.9 N, so this size suits duties between roughly 600 and 1000 N. The U flat-end back cover presents a flat face for bolted frames, with FA flange, LB foot or SDB pivot brackets and I / Y rod knuckles covering every other mount; air feeds through 1/4 in PT, G or NPT ports. On a 450 mm stroke, keep side load near zero by guiding the load externally - a 16 mm rod pushed sideways over this travel will score the bore and bend. When the solenoid vents, nothing holds the rod in place: it drifts until a rod lock or pilot check valve is fitted.
Quick checklist
At 0.5 MPa it pushes 981.3 N and pulls 880.8 N. At 0.7 MPa those figures rise to 1373.8 N push and 1233.1 N pull, and the theoretical maximum at 1.0 MPa is 200.1 kgf. Supply is 0.15-1.0 MPa (22-145 psi) of air filtered to 40 um, with speeds from 30-800 mm/s.
Back both cushion needle screws fully off before start-up, cycle the 450 mm stroke slowly, then close them a little at a time until the end-of-stroke knock disappears at your working speed. The cushion is variable air, not a fixed bumper, so it adapts to load changes; it brakes only near the ends and never locks the rod.
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