Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X125-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X125-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 125mm 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
- Stroke125 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 MACJ50X125-20S
Need a heavier touch than a 40 mm bore? This 50 mm MACJ50X125-20S delivers 981 N forward at 0.5 MPa and 881 N back, with the extend stroke trimmable over a 20 mm adjuster window. Variable air cushioning at each end lets you raise cycle speed toward 800 mm/s without hammering the aluminium covers.
The barrel is riveted stainless steel rolled over a hard-chrome plated carbon-steel rod, so it holds up in damp workshops and outdoor cells where painted mini cylinders bubble. As the piston magnet comes built in, DMSG or EMSG sensors drop on for position checks. Roughly 589 N of that 0.5 MPa push is a sensible working ceiling - enough to lift about 50 kg vertically at a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X125-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X125-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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 MACJ50X125-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -20 | 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 MACJ50X125-20S Is Used
Pallet-stacker gate latch
A 20 mm trim range matches the latch throw on outdoor stacker gates; the chrome-plated rod resists rain and grit between shifts.
Carton flap tucker
Cushioned at both ends, the tucker folds top flaps at speed without denting board; 981 N at 0.5 MPa handles double-wall stock.
Mixing rig lid clamp
The stainless barrel and hard-chrome rod shrug off vapor inside a lab mixer enclosure while the magnet signals lid-lock through an EMSG switch.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X125-20S the Right Cylinder?
The MACJ32 at 402 N covers lighter trimming duties, while the MACJ63 at 1558 N takes heavier forming; both share the same stainless round-body build. Remember the stop screw only shortens the extend stroke - it will not hold a load if air fails. Choose FA flange or LB foot mounting plus I / Y knuckles; magnet is standard and ports are 1/4 inch.
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 MACJ50X125-20S FAQ
The MACJ50X125-20S gives 981.3 N push and 880.8 N pull at 0.5 MPa, 1373.8 N push at 0.7 MPa, and 200.1 kgf theoretical maximum at 1.0 MPa. Its external stop screw trims the extend stroke anywhere within a 20 mm window. Ports are 1/4 inch, pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Yes. The riveted stainless barrel plus 20 um hard-chrome rod shrugs off washdown, condensation and mild outdoor exposure - a genuine advantage over painted-steel minis that rust at the barrel joints. Variable air cushion at both ends further protects the aluminium covers under fast cycling.
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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