Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 280mm 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
- Stroke280 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 MAC40X280SCA
A pivot-ready 40 mm mini cylinder: the MAC40X280SCA pairs a CA swing back cover with 280 mm of stroke and a solid 628.3 N push at 0.5 MPa (527.8 N on retraction). Step up to 0.7 MPa and forward force reaches 879.6 N. Because the cylinder is double acting with variable air cushions at both ends, heavier loads arrive at the end of travel without hammering the covers.
The CA back cover lets the mounting point pivot, which is handy on hinged gates and rotary linkages where the axis shifts slightly through the stroke. Construction follows the MAC recipe: stainless barrel, rolled aluminium covers, hard-chrome plated carbon-steel rod. Rated 0.15-1.0 MPa (22-145 psi) and -20 to +70 C, it tolerates the outdoor and food-area humidity that ruins painted minis. For lifting, count on about 64 kgf at 0.5 MPa - halve it to 32 kg for a comfortable 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 MAC40X280SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 MAC40X280SCA Is Used
Rotary index table drive
The CA pivot accommodates the swinging arc as the crank link turns, with 628 N enough for a mid-size indexing load.
Hinged oven door actuation
280 mm swings a bakery oven door open while the stainless body shrugs off heat-side steam and daily washdown.
Clamp fixture on a welding jig
Pivot mount follows the fixture arm geometry, and 377 N of practical clamping force at 0.5 MPa holds steel parts steady for tack welding.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SCA the Right Cylinder?
If 628 N is more than the job needs at 0.5 MPa, a MAC32 delivers 402 N in the same round format; if the load grows, the MAC50 pushes 981 N. The pivot back cover handles swing motion, but for rigid mounting add an FA flange or LB foot, with SDB pivot brackets at the opposite end. Remember the rod is free when air drops - a centred valve will not lock a 280 mm load in place, so spec a rod lock or pilot check valve where holding matters. The magnet is built in as standard for CMSG / DMSG / EMSG sensing.
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 MAC40X280SCA FAQ
This 40 mm bore generates 628.3 N push and 527.8 N pull at 0.5 MPa. At 0.7 MPa those climb to 879.6 N and 738.9 N. Theoretical peak force is 128.1 kgf at 1.0 MPa. Keep supply within 0.15-1.0 MPa (22-145 psi); proof pressure is 1.5 MPa (215 psi).
The CA suffix swaps the back cover for a pivot style, so the cylinder swings with the mechanism instead of fighting it - useful on linkages, gates and rotary motion. Everything else is standard MAC: 1/8" ports, M12x1.25 rod thread, variable air cushion at both ends and the built-in magnet for CMSG / DMSG / EMSG switches.
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