Airtac MAC Stainless Steel Mini Air Cylinder MAC40X290SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X290SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 290mm 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
- Stroke290 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 MAC40X290SU
Corrosion is where this cylinder earns its keep: a stainless-steel round barrel with hard-chrome plated 16 mm rod and rolled aluminium covers keeps sealing after salt air, outdoor rain or daily washdown that would pit a painted mini in months. Performance is no afterthought either - 628.3 N push and 527.8 N pull at 0.5 MPa, rising to 879.6 N forward at 0.7 MPa, across a 290 mm stroke. For sizing, expect about 377 N of dependable working force at 0.5 MPa.
The MAC40X290SU is double acting with a variable air cushion at both ends, so a fast-moving 290 mm stroke decelerates smoothly instead of slamming. The magnet comes standard for CMSG / DMSG / EMSG switch sensing. Ports are 1/8" and the rod thread is M12x1.25; the operating envelope is 0.15-1.0 MPa (22-145 psi) and -20 to +70 C.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X290SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X290SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 290 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 MAC40X290SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 MAC40X290SU Is Used
Dock-plate lever assist
290 mm of travel lifts a counterweighted dock plate section, and roughly 64 kgf at 0.5 MPa covers the assist load.
Belt clean-out gate on a fish line
The washdown-safe stainless body wipes down daily while 628 N drags the scraper gate across a 290 mm wide belt.
Lift gate for an outdoor kiosk
Rain and salt air cannot touch the stainless barrel, and the magnet with an EMSG switch confirms the gate is fully raised.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X290SU the Right Cylinder?
At 290 mm this sits well inside the standard range - the bore stretches to 500 mm before made-to-order lengths apply. A MAC32 manages 402 N at 0.5 MPa if the gate is light; once loads pass 600 N, step up to the MAC50 and its 981 N. A rod this far extended is vulnerable to bending: guide the load in slides or fit I / Y knuckles, and avoid cantilevered side thrust. Air loss means drift on any plain MAC, so where a raised gate must stay up, add a rod lock or pilot check valve. SDB pivot brackets, FA flanges and LB feet all bolt on without machining.
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 MAC40X290SU FAQ
At 0.5 MPa: 628.3 N push, 527.8 N pull. At 0.7 MPa: 879.6 N push, 738.9 N pull. Theoretical ceiling: 128.1 kgf at 1.0 MPa. That translates to about 64 kgf of lift at 0.5 MPa, or roughly 32 kg with a 2:1 safety margin. Pressure window is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi).
It is the opposite - the flush flat end lets the cylinder sit directly against a plate or bracket, and FA flange, LB foot or SDB pivot accessories adapt it to almost any frame. The 40 mm round stainless body, variable air cushions and standard magnet for CMSG / DMSG / EMSG switches all remain unchanged.
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