Airtac MAC Stainless Steel Mini Air Cylinder MAC40X275SUH
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X275SUH is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 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 MAC40X275SUH
275 mm of stroke with real muscle behind it: at 0.5 MPa this bore delivers 628.3 N forward and 527.8 N back, climbing to 879.6 N at 0.7 MPa. The MAC40X275SUH is double acting with a variable air cushion at each end, so you can ease end-of-stroke shock while running 30-800 mm/s. Budget roughly 377 N for real work at 0.5 MPa and the cylinder will reward you with a long service life.
Like every MAC, it is a riveted round-body unit: a stainless-steel barrel with rolled aluminium covers and a hard-chrome plated 16 mm carbon-steel rod, which is why it outlasts painted minis in damp or washdown corners. Air enters through 1/8" ports and the rod thread is M12x1.25. Operating window is 0.15-1.0 MPa (22-145 psi). The magnet ships standard, so CMSG, DMSG or EMSG switches mount without special ordering.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X275SUH Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X275SUH |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 MAC40X275SUH
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 MAC40X275SUH Is Used
Carton push-off on a packaging line
The 275 mm stroke clears a full conveyor lane while 628 N slides a loaded carton sideways at 0.5 MPa.
Press-die part ejection
Air cushion at both ends lets the rod eject stamped parts fast then decelerate gently, protecting the die fixture.
Tray stacker in a bakery
About 32 kg of vertical lift capability at a 2:1 margin matches typical tray stacks, and the stainless body handles flour-dust washdown.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X275SUH the Right Cylinder?
Size both ways before committing: a MAC32 gives about 402 N at 0.5 MPa if the load is lighter, while a MAC50 reaches 981 N for heavier pushes. Note that a plain MAC drifts when air is removed - if the rod must hold position on power loss, add a rod lock or pilot check valve. The flat-end back cover suits fixed mounts; add FA flange, LB foot or SDB pivot brackets and I/Y rod knuckles as the machine needs. The trailing H in this suffix is a datasheet-level detail worth confirming before you order.
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 MAC40X275SUH 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. The theoretical maximum is 128.1 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
Yes - every MAC ships with a built-in piston magnet, so CMSG, DMSG and EMSG switches snap onto the barrel straight out of the box. No special piston or factory option is needed, and the 16 mm hard-chrome rod gives the switch a repeatable target position.
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