Airtac MAC Stainless Steel Mini Air Cylinder MAC20X520SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X520SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 520mm 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
- Stroke520 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 MAC20X520SCM
Beyond the standard 500 mm limit, this 520 mm bore 20 unit is produced to order while keeping the familiar MAC numbers - 157 N push and 131.9 N pull at 0.5 MPa, double acting with a variable cushion at both ends.
A long thin 8 mm rod demands respect: guide the load, keep it square, and let the adjustable air cushion absorb the arrival. The riveted stainless barrel with hard-chrome rod suits damp plants where painted minis bubble, and the built-in magnet feeds CMSG, DMSG or EMSG switches for mid-stroke or end-of-stroke signals. Count on roughly 94 N of usable force at 0.5 MPa - about an 8 kg vertical lift with a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X520SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X520SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 520 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 MAC20X520SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×520 | 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 MAC20X520SCM Is Used
Deep drawer ejection
Pushes a wide parts drawer fully out of a CNC tool trolley; long travel in one light, cushioned move.
Shelf-level picker
Taps totes off a deep shelf in a picking module; the EMSG switch on the standard magnet confirms full extension.
Cross-belt rejector
Sweeps lightweight cartons off a wide courier belt; 157 N at 0.5 MPa is ample for sub-1 kg parcels.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X520SCM the Right Cylinder?
Step up or down from here: bore 16 tops out at 100.5 N at 0.5 MPa, while bore 25 delivers 245.3 N - if the 520 mm travel carries heavy parts, the 25 mm barrel is worth the space. This stroke exceeds the 500 mm catalogue maximum for bore 20, so it is quoted as a made-to-order item; confirm the exact specification on enquiry. Remember a plain MAC will not hold position when air drops - the cushion is not a brake - so plan a rod lock or pilot check valve. SDB pivot or FA flange brackets adapt the CM back cover to swinging or fixed frames.
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 MAC20X520SCM FAQ
The 520 mm stroke exceeds the 500 mm standard maximum for bore 20, so the cylinder is made to order - enquire with the full code. Force stays standard: 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N and 184.7 N at 0.7 MPa, with 32 kgf theoretical at 1.0 MPa. Port is 1/8" and the rod is 8 mm with M8x1.25 thread.
The MAC family accepts 30-800 mm/s, but on extra-long strokes keep the rod straight and support the load - side force bends an 8 mm rod. The variable air cushion at each end is dialled with needle screws, and pressure sits anywhere in 0.15-1.0 MPa (22-145 psi). For held positions, add a rod lock or pilot check valve since the piston drifts without air.
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