Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 20mm 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.
- BoreØ25 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA
Short travel, real muscle: over just 20 mm this 25 mm bore MAC delivers 245.3 N at 0.5 MPa, ideal for clamp-and-release jobs where a long stroke would waste cycle time. The CA back cover carries an integral pivot eye, so the body can swing with a lever or clamp arm instead of fighting side load on the 10 mm rod.
A riveted stainless barrel and 20 um hard-chrome rod keep corrosion out of damp clamping stations, and the variable air cushion at both ends settles the arm gently even near 800 mm/s. Plan the work at about 147 N rather than the full 245.3 N rating - roughly 60 percent - or, for vertical jigs, count on about 12 kg of lift with a 2:1 reserve. The magnet comes standard, so CMSG, DMSG or EMSG switches read the two end positions.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MAC25X20SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MAC25X20SCA Is Used
Pneumatic clamp on a welding fixture
The pivot eye tracks the clamp lever through its arc; 245.3 N at 0.5 MPa holds a 3 mm steel bracket against weld distortion.
Part stop on a rotary indexing table
A 20 mm nudge seats small aluminium hubs into the nest, with cushioning absorbing the stop without marring the finish.
Bag clamp on a semi-auto filler
Chrome rod and stainless tube survive daily wipe-downs; the short stroke pinches the bag neck between jaws in under a second.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X20SCA the Right Cylinder?
With only 20 mm of travel, confirm the job is a clamp, eject or position nudge - for longer feeds step up to a 100 mm stroke model, and if grip force is short move to the 32 mm bore at 402.2 N (0.5 MPa); the 20 mm bore's 157 N suits lighter touch duties. The pivot eye on the CA cover suits lever linkages; for fixed frames change to U or CM covers or bolt on FA, LB or SDB hardware. Air loss means drift on this double-acting body - fit a pilot check valve if the clamp must stay shut through a pressure dip. Ports are 1/8"; supply 0.15-1.0 MPa (22-145 psi), air filtered to 40 um.
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 MAC25X20SCA FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa that becomes 343.4 N push and 288.5 N pull, with 50 kgf the theoretical maximum at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s.
The pivot eye lets the body rotate with a clamp arm or linkage, sparing the 10 mm chrome rod from side bending across the 20 mm travel. Should the layout change, the same bore is available with flat-end U or round-end CM covers, or with FA flange, LB foot and SDB pivot brackets.
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