Airtac MAC Stainless Steel Mini Air Cylinder MAC40X225SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X225SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 MAC40X225SU
Behind its riveted stainless round barrel, the MAC40X225SU carries a double-acting piston with a variable air cushion at both ends. At 0.5 MPa the 40 mm bore pushes 628 N and pulls 528 N, rising to 880 N of push at 0.7 MPa - enough for clamping and lifting heads on packing lines. The hard-chrome plated 16 mm rod resists washdown far better than a painted mini body.
Plan real work around roughly 377 N at 0.5 MPa rather than the full 628 N rating, and the rod will lift about 32 kg vertically with a 2:1 margin (64 kg theoretical). Because the magnet ships built in, CMSG or DMSG switches click straight onto the barrel - no special piston to order.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X225SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X225SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 MAC40X225SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MAC40X225SU Is Used
Case pusher on a carton line
628 N at 0.5 MPa shoves a stack of folded cartons through a 225 mm lane change; the cushion stops the ram from hammering the frame at speed.
Bottling line diverter gate
The stainless barrel and chrome rod shrug off sticky condensation around a rinse station, where a painted mini body would corrode within months.
Fixture lid lift assist
Theoretical 64 kg lift, halved to 32 kg with margin - enough to raise a hinged welding jig lid without adding a counterweight.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X225SU the Right Cylinder?
Between the 25 mm bore (245 N push at 0.5 MPa) and the 50 mm bore (981 N), the 40 mm class sits mid-range at 628 N. Keep in mind that when the valve centres or air drops, the rod drifts freely - a plain MAC cannot park a load, so fit a rod lock or pilot check valve where holding matters. The U flat-end back cover bolts to fixed plates, while FA flange, LB foot or SDB pivot brackets cover other frames. At 225 mm of stroke, guide the load or use a knuckle to limit side load on 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 MAC40X225SU FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa, 880 N push and 739 N pull. The theoretical maximum at 1.0 MPa works out near 128 kgf. Ports are 1/8 in and the rod thread is M12x1.25.
The barrel is stainless steel with a 20 um hard-chrome rod, so humidity and light washdown are non-issues. Both ends carry a variable cushion - back the needle screws out on first run-up, then close them gradually until the 225 mm stroke lands smoothly.
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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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