Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCM 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 MAC40X550SCM
A 40 mm bore MAC built for long travel, the MAC40X550SCM runs double acting with a variable air cushion at both ends and reaches 550 mm of stroke. At 0.5 MPa the piston pushes 628 N, so size real work at roughly 377 N of that rating; halving the lift equivalent leaves about 32 kg of vertical payload with a comfortable margin. Because the stroke exceeds the 500 mm standard limit for bore 40, it is produced as a made-to-order length.
The rolled stainless-steel barrel and hard-chrome plated 16 mm rod shrug off washdown and damp air far better than painted minis, and the CM round-end back cover takes a pivot pin directly - no adapter bracket. A magnet comes built in, so CMSG, DMSG or EMSG switches drop on for end-of-stroke signalling. Ports are 1/8 inch; pressure spans 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCM |
|---|---|
| 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 MAC40X550SCM
| 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 MAC40X550SCM Is Used
Hopper slide gate actuation
Opens and closes a 550 mm slide gate under a grain or pellet hopper, with the cushion easing the gate home at each end.
Long-stroke ejector on a press
Kicks finished ceramic tiles off a press bed in one full 550 mm sweep at up to 628 N of push.
Door drive in a wash-prone plant
Runs a sliding machine enclosure door where daily hose-down would rust a painted steel body.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X550SCM the Right Cylinder?
Compare against the 32 mm bore (402 N push at 0.5 MPa) for lighter loads or the 50 mm bore (981 N) when more force is needed. Note the rod drifts when air is removed - the cushion softens impact but never locks position, so add a rod lock or pilot check valve for held loads. FA flange and LB foot brackets can be ordered alongside the CM cover, and on a 550 mm stroke support the load with a guide so side forces do not bend the rod.
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 MAC40X550SCM FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa push climbs to 880 N. The theoretical ceiling for the 40 mm bore is 128.1 kgf at 1.0 MPa. Supply air is filtered to 40 um, held between 0.15-1.0 MPa (22-145 psi), with a proof pressure of 1.5 MPa (215 psi).
Yes. Every MAC ships with a piston magnet fitted, so CMSG, DMSG or EMSG reed and Hall switches mount straight onto the barrel without a special-order piston. The variable air cushion at both ends is adjusted with needle screws - back them off for the first run, then close gradually until end-of-stroke shock disappears.
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1-Year Warranty
Covers non-human-caused product damage.
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