The AirTAC AirTAC MA20X30SU Mini Cylinder 20 mm Bore 30 mm Stroke is a genuine double acting standard round-body mini air cylinder with a Ø20mm bore and 30mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A compact 30 mm-stroke actuator for tight envelopes, the MA20X30SU pairs a 20 mm stainless-steel round barrel with a hard-chrome plated 8 mm rod. The covers are riveted onto the tube, so the body stays slim and sealed, and the double-acting piston delivers 157 N of push at 0.5 MPa (about 16 kgf of thrust in a package that slips where bulkier minis will not). Fixed anti-impact bumper pads soften both stroke ends; they decelerate the piston but are not an adjustable air cushion. For real-world sizing, treat roughly 94 N as the practical working force at 0.5 MPa instead of the full 157 N rating, and note the cylinder will lift about 8 kg vertically with a 2:1 margin. A magnet comes built in as standard, so CMSG, DMSG or EMSG switches can be clipped on at any time, and the U flat-end back cover gives a clean fixed-mount face without extra brackets.
| Model | AirTAC MA20X30SU Mini Cylinder 20 mm Bore 30 mm Stroke |
|---|---|
| Series | MA mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | Fixed anti-impact bumper pads |
| 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MA | Standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 short 30 mm kick at 157 N is enough to tip rejects or lane-divide PET bottles at moderate line speed, and the stainless barrel tolerates routine hose-down around wet filling equipment.
After machining, the 20 mm bore pushes finished aluminium blanks off their locating pins; the built-in magnet lets a DMSG switch confirm the eject stroke returned home before the next cycle.
About 8 kg of vertical pressing force with a 2:1 margin seats lightweight tray lids; the fixed bumper pads mute the close so the station stays quiet through thousands of wash cycles.
Check the class first: the 16 mm bore pushes 100.5 N at 0.5 MPa, this 20 mm bore gives 157 N, and stepping up to 25 mm raises it to 245.3 N. Pick the MA20X30SU when your part weight and friction sit comfortably under the 94 N working figure. Remember the plain MA drifts if air pressure drops or the valve centres - a pilot check valve or rod lock is the fix for a held load. The U back cover mounts flat against a plate; add FA flange, LB foot or SDB pivot hardware if the frame needs it, and match your 1/8 in PT fittings to the bore 20 port size.
Quick checklist
At 0.5 MPa this 20 mm bore pushes with 157 N and pulls with 131.9 N; at 0.7 MPa the figures rise to 219.8 N push and 184.7 N pull. The theoretical maximum is 32.0 kgf at 1.0 MPa. The cylinder runs on 0.15-1.0 MPa (22-145 psi) of 40 um filtered air, accepts proof pressure of 1.5 MPa (215 psi), and cycles at 30-800 mm/s across a 30 mm stroke.
The riveted stainless barrel with its hard-chrome 8 mm rod shrugs off the condensation, splash and mild washdown that rust painted-steel minis, so it suits food benches, rinsing stations and outdoor gantries. The U flat-end back cover presents a flat fixed mounting face, while the standard built-in magnet means CMSG, DMSG or EMSG position switches mount straight on without a special-order piston.
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