Airtac MAC Stainless Steel Mini Air Cylinder MAC20X490SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X490SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 490mm 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
- Stroke490 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 MAC20X490SCM
Near the top of the standard stroke range, the MAC20X490SCM travels 490 mm on a 20 mm bore with a CM round-end back cover that drops into pivoting linkages. Expect 157 N of push and 131.9 N of pull at 0.5 MPa; that translates to lifting about 8 kg vertically with a 2:1 margin on the rod.
Dial the variable air cushions at both ends before running long strokes at speed - open the needles, jog the cylinder, then close slowly - and the covers stay protected even at 800 mm/s. Washdown and damp plants are where the stainless barrel and hard-chrome 8 mm rod earn their keep, and the standard magnet pairs with CMSG, DMSG or EMSG switches along the whole travel.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X490SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X490SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 490 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 MAC20X490SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×490 | 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 MAC20X490SCM Is Used
Lane diverter blade
Swings products across three conveyor lanes; the CM round-end cover pins into the linkage and 157 N at 0.5 MPa shifts items up to about 8 kg.
Rack slide door
Opens a sliding door on a parts-storage cell through 490 mm of travel; the stainless barrel tolerates dust and damp conditions in the aisle.
Deep-hopper probe
Lowers a level-sensing probe into a deep hopper; variable cushions bring the probe head, kept well under the 8 kg lift figure, to a soft stop.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X490SCM the Right Cylinder?
Between the 16 mm bore (100.5 N at 0.5 MPa) and the 25 mm bore (245.3 N), this 20 mm barrel covers mid-duty pushes with about 94 N in reserve for real work. A 490 mm stroke demands careful alignment: guide the load on linear rails, since side-load on the 8 mm rod over this span causes premature seal and rod wear. Mount via FA flange, LB foot or SDB pivot, or use the CM round-end cover directly in a clevis-style linkage. On air loss the piston free-drifts - a rod lock or pilot check valve holds position instead.
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 MAC20X490SCM FAQ
Placeholder
Yes - set the variable cushions at both ends before full-speed cycling: unscrew the cushion needles, jog slowly, then close them until end-of-stroke shock disappears. Combined with external guidance for the load, this keeps the long stroke from hammering the aluminium covers.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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