Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X25-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X25-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 25mm stroke, 1/4" 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.
- BoreØ50 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- 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 MACJ50X25-30S
Compact force for tight fixtures: behind a 25 mm stroke, the 50 mm bore of the MACJ50X25-30S turns 0.5 MPa plant air into 981.3 N of push, enough to stake, clamp or seat small parts briskly. The stop screw trims the extend stroke within the ordered 30 mm window, and cushions at both ends let the rod run anywhere from 30 to 800 mm/s without cover hammer. A practical ceiling for sustained work is around 589 N, which keeps the two-way seal cool through millions of cycles.
Under the skin sits a riveted stainless barrel with a hard-chrome plated rod, an arrangement that shrugs off coolant mist far longer than lacquered steel minis. The piston magnet leaves the factory fitted, so position sensing stays a plug-on job with CMSG, DMSG or EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X25-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X25-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MACJ50X25-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -30 | 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 MACJ50X25-30S Is Used
Bottle line gate diverter
Switching single-serve bottles between two lanes takes a brief 25 mm shove; the 30 mm adjust window realigns the gate rail without remachining brackets.
Wave-solder hold-down
Clamping PCB pallets flat before the solder wave suits the 981.3 N push at 0.5 MPa, while the stainless barrel tolerates flux residue and routine washing.
Label press head
Pressing labels onto detergent bottles on a rotary labeler needs a firm short stroke; the extend stop dials press depth to the container without shims.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X25-30S the Right Cylinder?
A 40 mm cylinder supplies 628.3 N push at 0.5 MPa and the 63 mm bore reaches 1557.9 N; choose the 50 mm when your loads sit between those 64 kgf and 159 kgf classes. The trim stop holds the extend position only while air is present, so treat drift on power loss as normal and interlock the supply if that matters. Pick FA flange or LB foot mounting, add an I or Y rod knuckle where tooling pivots, and keep the 1/4 ports fed at 0.15-1.0 MPa (22-145 psi).
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 MACJ50X25-30S FAQ
Rated push is 981.3 N and pull 880.8 N at 0.5 MPa; raise the supply to 0.7 MPa for 1373.8 N push and 1233.1 N pull, with a 200.1 kgf theoretical ceiling at 1.0 MPa. Planning sustained work near 589 N is a sound margin, on 0.15-1.0 MPa (22-145 psi) air.
Air cushioning is variable at both caps, so you bleed each cushion needle to match its end to the load; combined with the 30-800 mm/s speed range, heavier masses decelerate smoothly instead of pounding the aluminium covers.
Authorized Export Seller
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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