
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 100mm 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.
Wide 30 mm trim flexibility makes this Dia 50 MACJ easy to dial in on fixtures that changed after commissioning. Push force is 981.3 N and pull 880.8 N at 0.5 MPa; the 16 mm hard-chrome rod rides in a riveted stainless barrel that shrugs off mild corrosion in food and outdoor cells.
The variable air cushion at each end can be tuned while the machine runs, letting heavier payloads stop softly anywhere across the 30-800 mm/s speed range. With a 2:1 margin the bore lifts about 50 kg vertically at 0.5 MPa, or puts around 588 N of honest working push into the tooling. The magnet comes standard for DMSG or EMSG sensing.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 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.
| 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.
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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.
Positions each layer of cases on a palletizer; the 30 mm window compensates for product height variation between SKUs.
Holds a roller at a set overlap depth on a glue applicator, with the cushion preventing bounce at the end of every pass.
Sets the closing depth of a sealing jaw so thin and thick films both seal squarely without re-shimming the station.
Sizing check: the 40 mm bore offers 628.3 N push at 0.5 MPa and the 63 mm bore offers 1557.9 N, so this 50 mm unit sits mid-range at 981.3 N. Choose FA flange or LB foot mounting; I and Y rod knuckles are also available. Where double-ended output is required, the MACD shares this cushioned design in the same bore. Remember the stop screw trims the extend stroke only - on air loss the piston still moves, so add an external stop wherever holding matters.
Quick checklist
On 0.5 MPa supply expect 981.3 N extending and 880.8 N retracting; on 0.7 MPa, 1373.8 N and 1233.1 N respectively. The 1.0 MPa theoretical ceiling is 200.1 kgf. Air must be filtered to 40 um, pressure held between 0.15-1.0 MPa (22-145 psi), and speed kept within 30-800 mm/s.
You bleed air in or out of the cushion chamber at each cover independently, so a heavy payload decelerates gently even at the top of the speed band - that means fewer cracked covers, less frame shake and longer seal life without changing the stroke.
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Covers non-human-caused product damage.
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