Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S
Few round-body minis let you trim the extend stroke across its whole travel, but the MACJ25X50-50S does exactly that: a 50 mm window turns the full 50 mm stroke into anything shorter, set with a screw in minutes. It is double-acting with a variable air cushion at both ends and a rated speed span of 30-800 mm/s. The 25 mm bore delivers 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push at 0.7 MPa.
A stainless barrel plus a 20 um hard-chrome plated rod shrug off mild corrosion and repeated wipe-downs, a real edge over painted-steel minis in damp or food areas. The magnet comes built in, so CMSG, DMSG or EMSG switches snap on with no special order. In practice, expect about 147 N of usable push at 0.5 MPa - the sensible slice of the 245.3 N rating - and size your guides to that.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + 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 300 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -50 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S Is Used
Marking stamp on a nameplate line
Dials the stroke from a light kiss to the full 50 mm for deep dot marks; 343.4 N at 0.7 MPa drives the stamp cleanly into aluminium plates.
Small ball-valve actuator on a skid
Strokes a compact valve lever in humid pump rooms where the stainless barrel resists condensation; the trim range fits several valve throws with one cylinder.
Gravity chute gate
Releases parts from a chute on a sortation bench; the variable cushion absorbs the gate slam so the bracket does not loosen over thousands of cycles.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S the Right Cylinder?
Below it, bore 20 gives 157.0 N at 0.5 MPa; above it, bore 32 gives 402.2 N - so pick this 25 mm bore when your load sits between roughly 100 and 200 N in real service. Keep in mind the stop screw only fixes where the rod lands on extend; it is not a mid-stroke lock, and the piston can still be back-driven once air is gone. FA flange or LB foot mounting, I / Y knuckles for pivoting tooling, and a standard magnet for CMSG, DMSG or EMSG switching. The 10 mm rod and short 50 mm stroke keep side-load risk low, but still guide anything overhung.
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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-50S FAQ
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa: 343.4 N push and 288.5 N pull. Theoretical maximum force is 50 kgf at 1.0 MPa. Pressure range is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), and speed covers 30-800 mm/s.
Yes. The round barrel is stainless steel, the rod carries a 20 um hard-chrome plate, and aluminium covers are rolled onto the tube in a sealed riveted body with no tie-rod bolts to loosen. The two-way piston seal also stores its own grease for long service life.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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