Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCMLB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCMLB is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 MAC40X400SCMLB
Foot-mounted and cushioned, the MAC40X400SCMLB puts 628.3 N of push at 0.5 MPa behind a 400 mm stroke on a 40 mm bore. LB feet bolt the riveted stainless round barrel flat to the machine plate, while the CM round-end rear cover keeps a pivot option open.
Because the piston drifts freely once air is removed, pair it with a rod lock or pilot check valve wherever the load must stay parked. For sizing, treat about 377 N (60% of rated push) as the realistic working force. The magnet ships built in as standard, so CMSG / DMSG / EMSG switches fit without a special piston, and speed runs 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCMLB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCMLB |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MAC40X400SCMLB
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 MAC40X400SCMLB Is Used
Pallet stopper
Bolted by its LB feet under a roller conveyor, it stops and releases pallets across the 400 mm travel at up to 800 mm/s.
CNC fixture clamp
Clamps aluminium housings in a machining fixture with roughly 377 N of working force at 0.5 MPa, sized at 60% of rated push.
Feed-mechanism drive
Drives a sliding feed table in a small press shop; the stainless barrel stands up to constant cutting-fluid mist.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X400SCMLB the Right Cylinder?
Pick this over the 32 mm bore (402.2 N at 0.5 MPa) once loads push past 400 N, and stay below the 50 mm bore (981.3 N) when they do not justify the extra bulk. With no air the rod is free to move, so a rod lock or pilot check valve is essential wherever a load must sit parked mid-stroke. LB feet plus the CM round-end rear cover handle fixed-base and rear-pivot layouts in one unit, and the built-in magnet suits CMSG / DMSG / EMSG switches. The 1/8 inch ports and M12x1.25 rod thread match the 40 mm bore, and at 400 mm of stroke the rod wants good load alignment to avoid bending.
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 MAC40X400SCMLB FAQ
Expect 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, and 128.1 kgf theoretical peak at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), and the 40 mm bore ports are 1/8 inch.
The rolled stainless tube and 20 um hard-chrome 16 mm rod resist rust in washdown, coolant mist and outdoor sites where painted or plain aluminium bodies corrode. LB feet bolt it flat, the CM rear cover keeps a pivot option, and the built-in magnet suits CMSG / DMSG / EMSG switches.
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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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