Airtac MAC Stainless Steel Mini Air Cylinder MAC40X300SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X300SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 MAC40X300SCM
Dial the end-of-stroke hit down to almost nothing: the MAC40X300SCM carries AirTAC's variable air cushion at both ends, so a 300 mm travel can run at speed without hammering the covers. Double acting throughout, it turns 0.5 MPa of shop air into 628.3 N of push and 527.8 N of pull; for vertical work this bore lifts about 32 kg when you keep a 2:1 margin, even though the raw push would raise 64 kg.
Its CM round-end back cover presents a clean pivoting face for clevis-style mounts, while the rolled stainless barrel and 20 um hard-chrome rod shrug off splash and condensation. A magnet comes standard in the piston, so CMSG / DMSG / EMSG switches mount without any special order. Operating window is 0.15-1.0 MPa (22-145 psi), -20 to +70 C.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X300SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X300SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MAC40X300SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MAC40X300SCM Is Used
Clamshell tray press
A clevis-pinned unit closes 300 mm clamshell trays on a food line, the cushion easing the snap so heat seals stay clean.
Autoclave sample shuttle
It pushes a rack of vials into a laboratory autoclave through splash and steam, the stainless body taking repeated wipe-downs.
Rotary index unlock
Mounted on its CM round-end pivot, it unlatches a dial-plate lock each cycle, with an EMSG switch confirming disengagement to the PLC.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X300SCM the Right Cylinder?
Compare before you commit: a 32 mm MAC gives 402.2 N at 0.5 MPa for lighter gates, while a 50 mm bore reaches 981.3 N for heavy clamping. The 1/8" ports and M12x1.25 rod thread on this 40 mm bore keep plumbing simple. Because there is no internal lock, a centred valve lets the rod creep under load - add a pilot check valve or rod lock where position must be held.
For a 300 mm stroke, brace the load in its own guideways so the 16 mm rod sees thrust only, and match the CM round-end to a clevis or add LB foot / FA flange / SDB pivot brackets as the frame demands.
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 MAC40X300SCM FAQ
Push is 628.3 N and pull 527.8 N at 0.5 MPa. Raise supply to 0.7 MPa and you get 879.6 N pushing, 738.9 N pulling; the theoretical ceiling at 1.0 MPa is 128.1 kgf. Working from roughly 60 percent of the 0.5 MPa push keeps the mechanism honest.
Needle screws at each end meter the exhaust near the stop, so deceleration is adjustable rather than fixed. Open them fully before the first stroke, then close slowly until the 300 mm travel ends smoothly at speeds up to 800 mm/s.
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