Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 MAC40X70SCA
The MAC40X70SCA takes the MAC series into its mid-force range: at 0.5 MPa the 40 mm bore pushes 628 N and pulls 528 N, enough for clamping and pushing jobs that smaller minis only gesture at. Air drives the rod both ways, and a variable cushion at each end soaks up stop shock so you can run 70 mm strokes near the 800 mm/s ceiling without hammering the covers.
Two things buyers notice in the field: the riveted stainless round barrel plus hard-chromed 16 mm rod tolerate damp, washed-down corners that flake painted minis, and every unit carries its magnet as standard, so a CMSG, DMSG or EMSG switch clips straight on. For sizing real work, plan on roughly 377 N of usable push at 0.5 MPa rather than the full 628 N rating.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 MAC40X70SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 MAC40X70SCA Is Used
Bottling line gate flap
The 70 mm stroke swings a sorting gate on a bottle infeed via the CA pivot eye; 628 N at 0.5 MPa flips a full lane of PET bottles without slamming, thanks to the tunable end cushion.
Fixture clamp swing
A lever-link clamp on aluminium extrusion machining fixtures gets its toggle force from this cylinder; roughly 377 N of usable push at 0.5 MPa holds parts against cut loads cycle after cycle.
Wash-station lid lift
The stainless barrel and chrome rod stand up to splash zones lifting tray-wash lids; the standard magnet trips a DMSG switch to confirm the lid is fully open before the conveyor restarts.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCA the Right Cylinder?
If 628 N overshoots the job, the 32 mm bore delivers 402 N at 0.5 MPa; if it falls short, step up to the 50 mm bore for 981 N. The CA pivot back cover bolts straight to link arms, while FA flange, LB foot or SDB pivot brackets cover fixed mounts. Note the rod is free to drift when air is removed - add a pilot check valve if a clamp must stay shut through a pressure drop. Ports are 1/8" on this bore with an M12x1.25 rod thread; pressure span is 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
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 MAC40X70SCA FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa those rise to 880 N and 739 N, with a theoretical peak of 128 kgf at 1.0 MPa. The 16 mm rod carries an M12x1.25 male thread, air ports are 1/8", operating pressure runs 0.15-1.0 MPa (22-145 psi), speed is 30-800 mm/s, and the cushion is adjustable at both ends.
Back both cushion needle screws fully off before start-up, then close them gradually until the load decelerates cleanly at each end. This matters at the top of the 30-800 mm/s speed range or with heavy fixtures - a needle closed from cold can stall the rod short of its 70 mm stroke.
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