Airtac MAC Stainless Steel Mini Air Cylinder MAC40X250SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X250SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 MAC40X250SCA
Swinging linkages and pivoted levers over a 250 mm path suit this MAC40X250SCA: a double-acting, cushioned mini cylinder whose CA back cover pivots without extra brackets. At 0.5 MPa it produces 628.3 N on the extend stroke and 527.8 N retracting, running on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s.
Its rolled stainless barrel with a hard-chromed 16 mm rod stands up to splashes and humidity that corrode painted minis. A built-in magnet is standard, so CMSG or EMSG switches clip straight onto the barrel for end-of-stroke signalling. Plan loads around 377 N of usable push - roughly a 32 kg vertical lift with a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X250SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X250SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MAC40X250SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MAC40X250SCA Is Used
Mixer lid tipping
Tilts heavy mixer lids through a 250 mm arc on a food-processing line, the pivot cover following the lever motion directly.
Welding fixture clamp
Swings a clamp arm over a car-frame jig and cushions the clamp stroke, with a DMSG switch confirming each closed cycle.
Grain chute diverter
Rocks a diverter vane between two discharge chutes at a grain depot, the variable cushion easing both park positions.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X250SCA the Right Cylinder?
A 32 mm bore delivers 402.2 N at 0.5 MPa while the next size up, 50 mm, reaches 981.3 N - pick by load, not habit. Because a plain MAC free-drifts when the valve centres, add a pilot check valve or rod lock wherever a load must stay held. The CA pivot pairs naturally with an SDB pivot bracket at the other end, or choose LB foot mounting for fixed frames. Over a 250 mm stroke, keep side loads low to protect the 16 mm rod from bending across the long span.
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 MAC40X250SCA FAQ
Extend force is 628.3 N and retract 527.8 N at 0.5 MPa; at 0.7 MPa expect 879.6 N push and 738.9 N pull, and the 1.0 MPa theoretical ceiling is 128.1 kgf.
The CA cover carries a pivot eye, letting the cylinder follow lever or linkage motion without a homemade adapter. Combine it with FA flange, LB foot or SDB bracket hardware to pin the body wherever the machine layout needs it.
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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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