Airtac MAC Stainless Steel Mini Air Cylinder MAC40X120SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X120SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 120mm 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
- Stroke120 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 MAC40X120SCA
Shop floors that hose down their equipment are the natural home of the MAC40X120SCA, a 40 mm bore round-body mini cylinder whose stainless barrel and riveted aluminium-alloy covers laugh off washdown and outdoor damp. The 120 mm stroke is driven double acting with a variable cushion at each end, giving 628.3 N of push and 527.8 N of pull at 0.5 MPa - call it 377 N of honest working force, or about 32 kg lifted vertically at a 2:1 margin.
The CA pivot eye in the rear cover mounts in a clevis so the rod can follow a rocking link through its arc, while the hard-chrome plated 16 mm rod keeps its surface where alignment is less than perfect. A magnet rides in the piston as standard equipment, ready for CMSG, DMSG or EMSG switches along the whole stroke. Air supply runs 0.15-1.0 MPa (22-145 psi) with speeds from 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X120SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X120SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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 MAC40X120SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×120 | 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 MAC40X120SCA Is Used
Vat lid lift on a dairy mixing line
Hung in a clevis, the cylinder tilts a stainless mixing vat lid up and away for cleaning access, its own stainless body unbothered by daily hose-down.
Tray ejector at a wash station
Pivoted at the belt edge, it sweeps washed trays onto an inclined exit chute, the cushion damping each sweep so trays do not bounce out of the chute.
Part presenter in a robot cell
The rod raises a nest of small castings into the robot pick position and retracts; a DMSG switch on the barrel confirms the up position every cycle.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X120SCA the Right Cylinder?
The 120 mm stroke sits well inside the 500 mm standard range of this bore, and if side load threatens on a longer rod later, fit guide rails rather than upsizing the bore. Against neighbours: the 32 mm MAC manages 402.2 N at 0.5 MPa, while the 50 mm pushes 981.3 N - pick 40 mm when the load sits near the 377 N working band. This is a plain double-acting unit, so when solenoid power or air drops the rod simply moves with the load; specify a rod lock or pilot check valve where holding matters.
Mounting stays flexible: CA pivot at the rear, FA flange, LB foot or SDB bracket as the frame demands, 1/8" PT ports, and 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 MAC40X120SCA FAQ
Output at a glance: 628.3 N push, 527.8 N pull at 0.5 MPa; 879.6 N push, 738.9 N pull at 0.7 MPa; roughly 128.1 kgf theoretical maximum at 1.0 MPa. Size actuators around 377 N of real push at 0.5 MPa to keep a margin.
No - it only softens arrival by bleeding air over the last few millimetres of travel. Cut the supply and the 120 mm stroke drifts wherever the load takes it, so add a rod lock or pilot check valve whenever the position must be kept.
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