Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke240 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU
A 240 mm reach on a 40 mm bore puts this MAC in the sweet spot for sliding gates, lifters and index tables that need muscle along a long path. Double acting with a variable air cushion at both ends, it pushes 628.3 N and pulls 527.8 N at 0.5 MPa, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
The riveted stainless barrel and 20 um hard-chrome rod shrug off washdown and damp shop air, a real edge over painted-steel minis. Keep real work to roughly 377 N at 0.5 MPa for a comfortable margin - the same figure means it lifts about 32 kg vertically. Needle-controlled cushions at each end absorb stop shock, so faster cycles run without hammering the covers.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 240 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MAC40X240SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | 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 MAC40X240SU Is Used
Packaging line gate
Slides a divert gate across a 240 mm conveyor gap on a snack-food line, with the cushion soaking up the stop at each park position.
Die-shoe lift assist
Raises a 30 kg stamping-die shoe on a press auxiliary axis, staying comfortably inside the 32 kg vertical-lift figure.
Bottle reject pusher
Sweeps off-spec bottles into a reject chute at line speed, the built-in magnet triggering a CMSG switch for reject counting.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X240SU the Right Cylinder?
Compare both neighbours before you buy: a 32 mm bore MAC tops out at 402.2 N push at 0.5 MPa, while stepping up to 50 mm buys 981.3 N. If the load hangs on the rod with air off, fit a rod lock or pilot check valve, since this cylinder drifts when pressure drops. The U flat-end cover takes FA flange or LB foot hardware directly, and an SDB pivot bracket suits swinging linkages. At 240 mm of stroke, guide the load externally so side force stays off the 16 mm rod.
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 MAC40X240SU FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa the figures rise to 879.6 N push and 738.9 N pull, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
Back both cushion needle screws fully out before the first run, then close each one gradually until the end-of-stroke knock fades. The variable cushion works identically at both ends, so each side can be tuned independently.
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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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