Airtac MAC Stainless Steel Mini Air Cylinder MAC20X550SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X550SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 550mm 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
- Stroke550 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 MAC20X550SCA
Swinging linkages that need serious reach fit the MAC20X550SCA: bore 20, 550 mm of travel, 157 N forward and 131.9 N back at 0.5 MPa, double acting throughout with a variable air cushion at each end.
The 550 mm length runs past the 500 mm standard, so this unit is built to order against your enquiry. Construction stays the trusted MAC recipe - a riveted stainless barrel, a 20 um hard-chromed 8 mm rod and aluminium covers that handle washdown mist where painted minis fail. The magnet is fitted as standard, letting CMSG, DMSG or EMSG switches ride the barrel. Usable output lands near 94 N at 0.5 MPa, enough to raise roughly 8 kg vertically with a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X550SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X550SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 550 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 MAC20X550SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×550 | 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 MAC20X550SCA Is Used
Lid swing actuator
Tilts a plastic mixer lid open via a pivot link; the CA ears take the clevis pin without adapters.
Chute flap control
Flips a long sorting chute flap in a recycling station; the cushion stops the flap cracking against its stop.
Clamp reach arm
Reaches across a welding table to pull jigs tight while air is applied; 157 N at 0.5 MPa suits light fixturing.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X550SCA the Right Cylinder?
A bore 16 unit manages 100.5 N at 0.5 MPa and a bore 32 reaches 402.2 N, so move up a size if the 550 mm stroke drags heavy loads or fights friction. Because this stroke is non-standard, confirm dimensions on enquiry before designing the bracket. The CA pivot ears accept clevis pins directly, and FA flange, LB foot or SDB pivot hardware bolts to the same body. One caution: with no air applied the rod slides freely - the cushion damps motion, it never locks it, so specify a rod lock or pilot check valve where the load must stand still.
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 MAC20X550SCA FAQ
At 0.5 MPa: 157 N push, 131.9 N pull. At 0.7 MPa: 219.8 N push, 184.7 N pull. Theoretical maximum is 32 kgf at 1.0 MPa. Supply runs 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure. The 550 mm stroke is made to order because it passes the 500 mm standard limit for bore 20.
The pivot ears let the cylinder swing through a linkage arc, common on lid, flap and lever mechanisms, without extra mounting brackets. Inside, the cylinder is unchanged: riveted stainless barrel, hard-chrome 8 mm rod, a standard piston magnet for CMSG, DMSG or EMSG switches, and needle-adjusted air cushions at both stroke ends.
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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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