Airtac MAC Stainless Steel Mini Air Cylinder MAC20X170SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X170SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 170mm 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
- Stroke170 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 MAC20X170SCM
The MAC20X170SCM is a double-acting round-body mini cylinder with a 170 mm stroke and a built-in magnet. Air drives the piston both ways, and a variable air cushion at each end absorbs the shock of 157 N worth of push at 0.5 MPa, so fast 30-800 mm/s cycling does not hammer the covers. Supply runs 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof.
The 20 mm barrel is stainless steel rolled and riveted together with aluminium-alloy covers into one sealed round body, while the 8 mm carbon-steel rod carries a 20 um hard-chrome skin that shrugs off washdown and damp air. Do the margin maths once: 157 N at 0.5 MPa leaves roughly 94 N of real work, enough to lift about 8 kg vertically with a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X170SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X170SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 170 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 MAC20X170SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×170 | 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 MAC20X170SCM Is Used
Bottling-line flap diverter
Swinging guide flaps that route bottles between lanes on a filler conveyor - 170 mm of travel clears the lane change and the air cushion lands the flap quietly instead of rattling the guide rail.
Drill-jig clamp arm
Holding light aluminium brackets against a drill jig - about 94 N of usable force seats the part, and the chrome-plated rod shrugs off the aluminium swarf in the mist.
Carton tray pusher
Pushing folded trays into a cartoning infeed - the CM round-end cover pivots the pusher arm through its arc and a CMSG switch confirms tray-present to the PLC.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X170SCM the Right Cylinder?
Step down to a MAC16X170 (100.5 N push at 0.5 MPa) for lighter flaps, or step up to a MAC25X170 (245.3 N) if the load grows. Remember the plain MAC does not park its load: centre the valve and the rod drifts, so fit a pilot check valve or rod lock where position must hold. The CM round-end back cover takes a pivot pin straight into the linkage; FA flange, LB foot and SDB pivot brackets bolt on too, and the standard magnet lets CMSG, DMSG or EMSG switches clip on for end-of-stroke signals. On a 170 mm stroke keep side load off the 8 mm rod and guide the load externally.
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 MAC20X170SCM FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N. Raise supply to 0.7 MPa and the figures become 219.8 N push and 184.7 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. It is double acting throughout, cushions at both ends, and breathes through 1/8" ports with an M8x1.25 male rod thread.
A 170 mm stroke keeps a lot of rod exposed, and the hard-chrome plated carbon-steel rod plus stainless tube resist the rust that painted mini cylinders pick up in damp or washdown areas. The rolling-packed, riveted body also stays sealed without re-tightening.
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