Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 225mm 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
- Stroke225 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 MACJ50X225-20S
A 20 mm trim band around a 225 mm stroke gives this 50 mm bore actuator a sweet spot for fixtures that need final positioning nailed down on the machine, not in the catalogue. It is double-acting with cushioning you can vary at each end, runs on 0.15-1.0 MPa (22-145 psi) filtered air, and produces 981.3 N pushing at 0.5 MPa, rising to 1373.8 N at 0.7 MPa.
Because this bore converts its 981.3 N of thrust into close to 100 kgf of lift on paper, halving for a sensible 2:1 margin means you can lift about 50 kg vertically with confidence. Stainless barrel plus hard-chrome rod shrug off splash and outdoor damp, and the built-in magnet is ready for CMSG / DMSG / EMSG sensing out of the box.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 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 MACJ50X225-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×225 | 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 MACJ50X225-20S Is Used
Bushings press-in station
Seats bushings in pump housings with about 589 N of working push at 0.5 MPa, the stroke end trimmed to the fixture inside the 20 mm window.
Tube-saw length stop
Acts as the movable end stop on a small tube saw, setting cut length from 205 to 225 mm at changeover without swapping hard stops.
Tray lane shifter
Moves a full tray between two lanes on a bakery conveyor, dual cushions keeping the 225 mm swing quiet even at speed.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S the Right Cylinder?
The 40 mm bore would give you 628.3 N at 0.5 MPa and the 63 mm bore 1557.9 N, so 981.3 N here sits squarely in the middle. Position sensing is simple: CMSG / DMSG / EMSG switches clip onto the standard magnet. Choose FA flange or LB foot fixing, or an I / Y knuckle where the joint must swivel. The adjuster sets only where extend ends, within the 20 mm window; it will not lock the rod in place if air pressure drops, so add a holding valve where drift matters. Keep the 225 mm stroke side-load free or fit external guides.
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 MACJ50X225-20S FAQ
Yes: 981.3 N push and 880.8 N pull at 0.5 MPa, 1373.8 N push and 1233.1 N pull at 0.7 MPa, and 200.1 kgf theoretical maximum at 1.0 MPa. The 50 mm bore runs 0.15-1.0 MPa (22-145 psi) air, 30-800 mm/s, with a 20 mm extend-trim window on the 225 mm stroke, 1/4 in. ports and M14x1.5 rod thread.
The stop screw only sets where the extend stroke ends inside the 20 mm window; it is not a mid-stroke lock or brake, so if supply air fails the piston can still drift under load. Fit a holding or locking valve where position must be kept.
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.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.