Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU
A flat-end U back cover lets the MAC40X40SU bolt flush against a fixed plate, and inside sits a 40 mm bore that pushes 628 N at 0.5 MPa, double acting with variable air cushions at both ends. Air operates the rod in both directions; nothing spring-returns it. The rolling-packed body rivets aluminium covers and a stainless block onto the barrel for a sealed, rigid unit.
For vertical lifts, the 628 N push at 0.5 MPa equates to about 64 kg theoretical, so halve it and expect around 32 kg of vertical lifting capacity with margin. The hard-chrome plated 16 mm rod over a stainless barrel resists washdown moisture far better than painted minis, and the standard magnet accepts CMSG / DMSG / EMSG switches. Supply air spans 0.15-1.0 MPa (22-145 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MAC40X40SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MAC40X40SU Is Used
Pallet stopper on an assembly conveyor
Bolted flush to the frame through its U flat-end cover, the cylinder raises a stopper blade under passing pallets; the 528 N pull at 0.5 MPa retracts it quickly between pallets.
Hold-down clamp on a welding fixture
At 628 N push, the 40 mm bore clamps steel tube segments against a jig; the needle-cushioned approach keeps the clamp arm from denting thin-walled tube at contact.
Diverter flap on a grain transfer auger
The flat-end body mounts directly to the auger housing, swinging a diverter flap between two grain bins; across 30-800 mm/s it repositions in a fraction of a second.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X40SU the Right Cylinder?
For lighter work the 32 mm bore gives 402 N at 0.5 MPa; for heavier duty the 50 mm bore delivers 981 N, leaving the 40 mm as the balanced mid choice. Since the piston drifts the moment air is removed, do not rely on this cylinder to keep a clamp shut - add a pilot check valve or rod lock instead. The U flat-end cover bolts straight to a fixed face; add FA flange or LB foot hardware where the machine frame needs it, and I or Y rod knuckles for the 16 mm rod end.
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 MAC40X40SU FAQ
Measured figures for the 40 mm bore: 628.3 N push and 527.8 N pull at 0.5 MPa, climbing to 879.6 N push and 738.9 N pull at 0.7 MPa, topping out at 128.1 kgf theoretical at 1.0 MPa. The rod is 16 mm with an M12x1.25 male thread and the ports are 1/8".
The stainless round barrel and the 20 um hard-chrome plated carbon-steel rod resist mild corrosion far better than painted steel minis, and the riveted aluminium covers keep the seal intact. Operating range is -20 to +70 C on air filtered to 40 um, covering chilled and humid food-plant zones.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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