Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S
The AirTAC MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S is a genuine double acting, double rod, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 15mm 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
- Stroke15 mm
- Port size1/4"
- Acting typeDouble acting, double rod, 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 MACJ50X15-20S
The riveted stainless-steel tube and 20 um hard-chrome rod shrug off mild corrosion, an edge over painted minis in food plants and outdoor gates. Double-acting throughout, it runs on 0.15-1.0 MPa (22-145 psi) filtered air.
Sensing is ready out of the box because the piston magnet ships as standard and takes CMSG, DMSG or EMSG switches. Speed range 30-800 mm/s covers both gentle placement and quick return strokes.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 15 mm |
| Acting type | Double acting, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
MAJ / MACJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×15 | 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 (double rod, 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 MACJ50X15-20S Is Used
Press-fit depth setting
Pressing bushings into aluminium housings: the 20 mm window lets one cylinder serve several housing heights without changeover.
Label-head kiss press
Light, cushioned contact on carton labels, with EMSG feedback confirming the head reached the trimmed end point.
Mould latch actuation on a small press
The stop screw sets latch engagement to the millimetre; 981 N at 0.5 MPa throws a heavy latch with authority.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X15-20S the Right Cylinder?
Remember the trim screw is an end stop, not a brake - with air off, the piston can still be pushed along its travel, so fit a locking valve where holding matters. Choose the FA flange for face mounting, the LB foot for base fixing, and pair I or Y knuckles with pivoting loads; the standard magnet keeps switch options open.
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 MACJ50X15-20S FAQ
Theoretical maximum at 1.0 MPa: 200 kgf. The 20 mm window lets the stop screw shorten the extend stroke anywhere in that range, each end carries a variable air cushion, and the port size is 1/4-inch with an M14x1.5 male rod thread.
Because the cushion is variable, you bleed air gradually through the last millimetres of travel, so a short stroke carrying a heavy tooling plate stops square instead of slamming. Combined with the 30-800 mm/s speed band, you can raise cycle speed until the cushion just quiets the impact.
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 MACJ50X15-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.