Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X80-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X80-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 80mm 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
- Stroke80 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 MACJ50X80-30S
With a 50 mm bore giving 981 N of push at 0.5 MPa, this MACJ sits in true mid-duty territory: clamping, pressing, ejecting. The double-acting piston runs on air both directions, and the -30 adjuster means a stop screw can pull the extend stroke back by up to 30 mm on the machine - no re-ordering when the fixture changes. Variable air cushions at both ends absorb the shock if you run fast or heavy.
Build quality is where the MA series earns its keep: a stainless-steel barrel rolled together with aluminium covers and a hard-chrome plated rod shrugs off washdown mist that would chew a painted mini. The magnet is built in as standard, so a CMSG or DMSG switch snaps on for end-of-stroke signalling. In practice, budget about 589 N of usable force at 0.5 MPa instead of the full 981 N - that margin keeps seals and bushings happy for years.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X80-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X80-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 80 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 MACJ50X80-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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 MACJ50X80-30S Is Used
Heat-seal jaw drive
Drives the sealing jaw on a snack-bag horizontal wrapper: 981 N closes the bar, the 30 mm trim sets seal dwell position, cushions kill the slam at high line speeds.
Fixture clamp on a machining centre
Swings or clamps a jig gate between operations on a vertical mill. The stop screw locks in the exact clamp height, and the magnet feeds a CMSG switch to the PLC.
Small bench press / staking
Stakes bushings into housings at a bench station. About 589 N of working force handles brass and aluminium inserts, with the cushion smoothing the strike.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X80-30S the Right Cylinder?
Sizing check: the 40 mm MACJ delivers 628 N at 0.5 MPa and the 63 mm version 1558 N, so pick this 50 mm bore when your job needs roughly 600-900 N of working push. Remember the adjuster only sets an end stop - on air loss the rod drifts, it never holds a load mid-travel. Mount with the FA flange or LB foot, add I or Y rod knuckles if the tooling needs a swivel, and order G or NPT ports if PT does not suit your plant.
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 MACJ50X80-30S FAQ
At 0.5 MPa the bore pushes 981.3 N and pulls 880.8 N; at 0.7 MPa those rise to 1373.8 N push and 1233.1 N pull. The theoretical maximum at 1.0 MPa is 200.1 kgf. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, temperature -20 to +70 C.
An external stop screw shortens the extend stroke anywhere within the ordered 30 mm window - set it on the machine without swapping cylinders. It shortens the stroke only; it never extends beyond 80 mm. The built-in magnet and CMSG / DMSG / EMSG switch options give you position feedback at whatever stop you dial in.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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