Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 240mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke240 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU
A flat U end makes the MAC20X240SU bolt flush against a machine plate over its 240 mm travel. This double-acting, cushioned 20 mm bore pushes 157 N and pulls 131.9 N at 0.5 MPa, and the variable air cushion at each end lets you run faster cycles without hammering the covers.
Working near the top of the range? Keep continuous loads around 94 N and the cushion stays effective as a decelerator rather than fighting the load. CMSG, DMSG and EMSG switches clip straight onto the barrel because the magnet is built in as standard, and the stainless round body handles wipedown in electronics and packaging areas.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 240 mm |
| Acting type | Double acting + cushion |
| 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 | 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.
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×240 | 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.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU Is Used
PCBA burn-in press
Presses PCBAs into a burn-in fixture on an electronics line; a slow 30 mm/s approach avoids damaging fine-pitch leads.
Rinse-zone actuator
Cycles a rinse-head pivot in a washdown corner where the stainless barrel outlasts painted mini bodies season after season.
Product stop
Stops cartons at a labeler infeed; the needle cushions take the impact as each box reaches the 240 mm mark.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU the Right Cylinder?
Compared with a 16 mm MAC pushing 100.5 N, this 20 mm bore more than covers the gap; a 25 mm MAC raises push to 245.3 N if the mechanism grows. It holds no position on loss of air, so latch or brake externally when that matters. The flat U end plus FA flange or LB foot brackets makes a rigid fixed mount. At 240 mm, support the tooling so the 8 mm hard-chrome rod sees thrust only, never side load.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X240SU FAQ
Design on 157 N push and 131.9 N pull at 0.5 MPa, or 219.8 N and 184.7 N respectively at 0.7 MPa; the ceiling is 32 kgf theoretical at 1.0 MPa. The operating window is 0.15-1.0 MPa (22-145 psi) and the ports are 1/8" on this 20 mm bore.
Needle screws at each end throttle the exhaust just before the piston lands, so you can soften stops on the 240 mm stroke. Back them fully off at first run, then close them gradually; keep speed within 30-800 mm/s.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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