Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke550 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA
Need 550 mm of travel from a compact round body? The MAC40X550SCA gets there as a made-to-order stroke - the catalog maximum for a 40 mm bore is 500 mm - while keeping the 628 N push and 528 N pull ratings that come with this size at 0.5 MPa. In weight terms that push equals suspending about 64 kg; halve it for a 2:1 margin and the rod will lift roughly 32 kg vertically.
Cushion needle screws at both ends let you bleed off end-of-stroke shock, so longer travel can run at speed without hammering the aluminium-alloy covers. The CA pivot back cover swings on a pin, and the built-in magnet works with CMSG / DMSG / EMSG switches from day one.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 550 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MAC40X550SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | 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 MAC40X550SCA Is Used
High-shelf elevator latch
A 550 mm stroke reaches a latch on the upper tier of a storage carousel; with about 32 kg vertical lift capacity at a 2:1 margin, most tote trays clear easily.
Index table stop
Acts as a long-reach stop on a rotary indexing table, with the air cushion soaking up the stop so the fixture does not bounce off position.
Case ejector
Ejects filled cases from a packaging machine lane; 628 N of push at 0.5 MPa clears heavy multi-packs without stalling the stroke.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCA the Right Cylinder?
Compare before you commit: a 32 mm bore pushes about 402 N at 0.5 MPa, while the next size up, 50 mm, reaches 981 N - this 40 mm sits between at 628 N push and 528 N pull. With 550 mm of travel, external guiding matters; the 16 mm rod will bend under side loads, so slide or cam the load separately. Note there is no position holding when air drops - the piston floats - so add a rod lock or pilot check valve if the load must stay raised. CA pivot tail plus optional FA, LB or SDB mounts, magnet standard.
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 MAC40X550SCA FAQ
Push is 628 N and pull 528 N at 0.5 MPa; at 0.7 MPa expect 880 N push and 739 N pull, peaking at a theoretical 128 kgf at 1.0 MPa. It runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air, proof tested to 1.5 MPa (215 psi), with a 1/8" port and M12x1.25 male rod thread on the 16 mm rod.
No - the cushion only softens the last part of travel. When air is lost or the valve centres, the piston drifts freely, so use a rod lock or pilot check valve wherever the load must stay raised. The 550 mm stroke itself is a made-to-order build above the 500 mm standard limit.
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