Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 50mm 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
- Stroke50 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 MACJ50X50-30S
Instead of ordering three fixed strokes, you order one: the MACJ50X50-30S shortens its extend stroke anywhere inside a 30 mm window with an external stop screw, while variable air cushions at both ends absorb the shock at whatever position you set. The body stays classic MA - stainless round barrel, hard-chrome plated rod, riveted aluminium-alloy covers, no tie-rods.
Thrust at 0.5 MPa reaches 981.3 N in extension; keep real working loads near 589 N and the cylinder will run its 30-800 mm/s range all shift without banging covers. With the magnet fitted as standard, CMSG / DMSG / EMSG switches confirm end positions without any special-order piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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 MACJ50X50-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×50 | 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 MACJ50X50-30S Is Used
Bearing press
Seating small bearings into pump housings draws on the 1373.8 N available at 0.7 MPa while the stop controls press depth.
Palletizer gate
A divert gate between pallet lanes swings mixed loads aside, and the dual cushions stop gate slam at both ends of travel.
Fill-height stop
On a rice or grain filling line the trimmed stroke sets bottle fill height, and the standard magnet signals fill complete.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-30S the Right Cylinder?
If 628.3 N from a MACJ40 is shy and 1557.9 N from a MACJ63 is overkill, the 981.3 N of this 50 mm bore is the middle answer. Work near 589 N at 0.5 MPa, or step up to 0.7 MPa for 1373.8 N when a heavier press or lift needs it.
Mounting choice is FA flange or LB foot, with I and Y knuckles for pivoting rods - note the adjustable version carries no SDB or back-cover code. The stop screw trims extend stroke only and holds nothing on air loss. 50 mm of travel rarely strains the rod, but align the load to avoid side force; ports are 1/4".
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 MACJ50X50-30S FAQ
At 0.5 MPa: 981.3 N push, 880.8 N pull. At 0.7 MPa: 1373.8 N push, 1233.1 N pull. Theoretical maximum force is 200.1 kgf at 1.0 MPa. In service aim for roughly 589 N, and treat the 30 mm stop screw as an extend-position limit only - the rod still drifts if air pressure is lost.
The variable cushions at both ends work independently of the 30 mm trim window, so after moving the stop screw just re-balance the cushion screws at whatever speed you run between 30 and 800 mm/s. Heavier loads then stop soft even at the shortened position.
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