Airtac MAC Stainless Steel Mini Air Cylinder MAC40X90SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X90SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 90mm 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
- Stroke90 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 MAC40X90SU
MAC40X90SU pairs a 90 mm stroke with 40 mm of bore: 628 N of push and 528 N of pull at 0.5 MPa, climbing to 880 N when you feed it 0.7 MPa. Because it is double acting with a variable air cushion at both ends, you can bleed the needle screws in for a soft stop on jigs and small presses, and about 377 N of that rating is a sensible working figure at 0.5 MPa.
The flat-end U back cover bolts flush against a machine face with no bracket, while the riveted stainless barrel and 16 mm hard-chrome rod take repeated washdown in food or outdoor settings. Every unit ships with its magnet already fitted, so CMSG, DMSG or EMSG reed switches read end positions out of the box.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X90SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X90SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 MAC40X90SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 MAC40X90SU Is Used
Bearing press fit
Seats ball bearings into housings with up to 377 N of steady working force; the flat-end cover bolts flush to the press frame.
Glue head plunge
The 90 mm stroke dips the nozzle between carton flaps; the cushion trims impact so the bead stays consistent run after run.
PCB test fixture
Clamps boards for bed-of-nails testing; the hard-chrome rod and sealed barrel resist flux-cleaner splash on the line.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X90SU the Right Cylinder?
Step down to 32 mm (402 N push at 0.5 MPa) for lighter jigs or up to 50 mm (981 N) when you need double the muscle; this 40 mm bore's 628 N is the middle road. Note that it will not lock under it - a centred valve or air loss means drift, so a rod lock or pilot check valve is the fix for held loads.
The U flat-end cover fixes flush to a face; add FA flange or LB foot brackets if the layout demands. Sensors mount instantly thanks to the standard magnet, ports are 1/8" with an M12x1.25 rod thread.
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 MAC40X90SU FAQ
Expect 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, and 128.1 kgf theoretical peak at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) of 40 um filtered air at 30-800 mm/s, with the variable cushion set by the end-cover needle screws.
The flat end bolts directly against a machine face or bracket with no pivot hardware, which suits fixed jig and small-press mounts. Combined with the riveted stainless barrel and 16 mm hard-chrome rod, the unit shrugs off washdown on food-grade benches; the standard magnet still feeds CMSG / DMSG / EMSG switches.
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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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