Airtac MAC Stainless Steel Mini Air Cylinder MAC40X270SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X270SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 270mm 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
- Stroke270 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 MAC40X270SCM
Round-end covers change how this cylinder hangs: the MAC40X270SCM carries a CM back cover that takes a pivot pin through its rounded boss, suiting swinging levers and linkages over a 270 mm stroke. The 40 mm bore is double acting with variable cushioning at both ends and produces 628.3 N of push against 527.8 N of pull at 0.5 MPa, rising to 879.6 N on the 0.7 MPa setting.
Coolant, rain or washdown chemicals barely touch the stainless barrel and its 20 um chrome-plated rod, so the cylinder keeps sealing where painted minis corrode. Size conservatively: about 377 N of practical force at 0.5 MPa, equivalent to lifting a 32 kg part vertically with a 2:1 margin. The built-in magnet ships as standard, so CMSG, DMSG and EMSG switches click on for end-of-stroke detection.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X270SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X270SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 270 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 MAC40X270SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×270 | 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 MAC40X270SCM Is Used
Turntable indexing
Swinging a small indexing table through its detent on a rotary assembly station, the CM round end riding a fixed pivot pin.
Weld tip clamp
Closing weld tips on a bracket assembly line; 628 N of clamp force at 0.5 MPa holds the joint while the timer completes the weld.
Diverter flap control
Kicking product between two conveyor lanes with a flap actuator, cushioned so the flap seats gently even at 800 mm/s cycling.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X270SCM the Right Cylinder?
For the same stroke at lower force, the 32 mm bore manages 402.2 N at 0.5 MPa; for more muscle the 50 mm bore reaches 981.3 N. Keep in mind that nothing locks the rod when air is removed - a centred valve lets the load drift, so fit a rod lock or pilot check valve for holding duty. The CM round end works with SDB pivot brackets, and FA flange or LB foot mounts handle rigid frames. Over 270 mm of travel, align the driven linkage so the 16 mm rod sees axial force only, and lean on the cushions when closing on hard stops.
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 MAC40X270SCM FAQ
Bore 40 mm, stroke 270 mm, rod 16 mm, ports 1/8", rod thread M12x1.25. At 0.5 MPa: 628.3 N push, 527.8 N pull. At 0.7 MPa: 879.6 N push, 738.9 N pull. Maximum theoretical force 128.1 kgf at 1.0 MPa. Double acting, variable air cushion at both ends, 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, magnet standard.
Its rounded boss accepts a pivot pin, letting the cylinder swing with levers and linkages without adaptor plates. It combines with FA flange, LB foot and SDB mounts, and since the piston magnet is standard, CMSG, DMSG or EMSG switches mount on the stainless barrel for position signals.
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