Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA
Built around a 20 mm stainless barrel with covers rolled onto it, MAC20X70SCA is AirTAC's cushioned round mini cylinder in a 70 mm stroke. It is double acting - air drives the rod out and back - and its variable air cushion at both ends lets you tune away end-of-stroke knock. At 0.5 MPa it develops 157 N of push; at 0.7 MPa, 219.8 N.
Because the magnet is fitted as standard, CMSG, DMSG or EMSG reed switches mount on the barrel with no special piston. For sizing, treat 94 N as the realistic continuous push at 0.5 MPa, which is about an 8 kg vertical lift with a 2:1 margin. The CA pivot back cover accepts a pivot pin directly, so a swinging linkage needs no adapter bracket.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MAC20X70SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | 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 MAC20X70SCA Is Used
Small press fixture
Closes a cam clamp on a CNC jig, squeezing parts against a locator with 157 N at 0.5 MPa; the cushion stops the fixture banging at the end of the close.
Bottle lane diverter
Swings a guide rail on a bottling line to merge or split lanes; the CA pivot matches the swinging linkage without extra brackets.
Lab carousel index
Advances a sample tray one station in an analytical instrument, with DMSG switches confirming each 70 mm move.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X70SCA the Right Cylinder?
At this force level you can drop to a bore 16 MAC (100.5 N push at 0.5 MPa) for lighter gates, or step up to bore 25 (245.3 N) if the load grows. The piston is not held by the cylinder itself - when air bleeds off, a suspended load will sink, so add a check valve or rod lock for holding. If the job needs a fixed base instead of a pivot, order the U or CM back cover, or bolt on an FA flange or LB foot.
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 MAC20X70SCA FAQ
Push at 0.5 MPa is 157 N and pull is 131.9 N; at 0.7 MPa it delivers 219.8 N push and 184.7 N pull. Theoretical maximum is 32.0 kgf at 1.0 MPa. The bore is 20 mm with an 8 mm rod and 1/8" ports.
Yes to both. Each MAC20X70SCA ships with a built-in piston magnet for CMSG, DMSG or EMSG switches, and the CA back cover provides the pivot point. The operating window is 0.15-1.0 MPa (22-145 psi) at -20 to +70 C, with speeds of 30-800 mm/s.
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