Airtac MAC Stainless Steel Mini Air Cylinder MAC40X15SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X15SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 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 MAC40X15SU
A short 15 mm stroke version of AirTAC's round-body MAC mini cylinder, the MAC40X15SU pushes with 628 N (pull 528 N) at 0.5 MPa and reaches 880 N at 0.7 MPa. It is double acting with a variable air cushion at both ends, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
The 40 mm stainless barrel is rolled onto aluminium covers with a hard-chrome plated rod, so it tolerates washdown and damp shop air far better than painted minis. At 0.5 MPa, plan real work around 377 N rather than the full 628 N rating. The U flat-end back cover gives a fixed mount without extra brackets, and the built-in magnet accepts CMSG, DMSG or EMSG switches as standard.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X15SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X15SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MAC40X15SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MAC40X15SU Is Used
Riveting punch
A 15 mm punch stroke indexes rivets on small electronics enclosures; 628 N at 0.5 MPa sets aluminium rivets without hammering the tool.
Presence clamping
Clamps a printed circuit board fixture closed during a solder pass; the 15 mm stroke clears loading hands while the cushion softens contact.
Slide confirmation
Retracts a pin so a vision sensor can verify part orientation on an assembly dial table; the built-in magnet drives a CMSG switch for the retracted signal.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X15SU the Right Cylinder?
At 628 N push at 0.5 MPa, this 40 mm bore sits above the 25 mm bore (245 N) when a jig needs more clamp force in the same footprint; step to the 50 mm bore (981 N) for heavier dies. With only 15 mm of travel there is little rod exposure, so side load is rarely an issue. Remember the piston drifts when air is lost - add a rod lock or pilot check valve if the position must hold. Port is 1/8" on this bore; rod thread M12x1.25.
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 MAC40X15SU FAQ
Push at 0.5 MPa is 628.3 N and pull 527.8 N; at 0.7 MPa push reaches 879.6 N and pull 738.9 N. The theoretical maximum is about 128.1 kgf at 1.0 MPa. It is double acting with a variable air cushion at both ends and runs 30-800 mm/s.
Yes - both ends carry a variable air cushion. Back the needle screws off for the first run, then close them gradually until end-of-stroke shock disappears. Fluid is air filtered to 40 um; proof pressure is 1.5 MPa (215 psi).
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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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