
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X225-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 225mm stroke, M5×0.8 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.
Small frames often need a stroke that is exact, not nominal. The MACJ16X225-30S shortens its 225 mm extend stroke by up to 30 mm via the stop screw, while the double-acting piston and variable air cushions keep the motion controlled. Force at 0.5 MPa is 100.5 N push and 86.4 N pull, with 140.7 N available at 0.7 MPa.
The 6 mm hard-chrome rod and stainless round barrel shrug off splash and humidity better than painted mini cylinders. Note the adjuster is an end stop only: on air loss the rod can drift, so add a valve or lock if holding matters. M5x0.8 ports, magnet standard.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X225-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 300 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 | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 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). |
|---|---|
| 16 | Bore size in mm. |
| ×225 | 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.
Presses a dispensing needle onto electronics or hobby joints; the 30 mm trim matches different fixture heights without shims.
Diverts small parcels on a sorter take-off; about 60 N of working force suits light polybags and padded envelopes.
Sets an inner slide position on a small stamping fixture where the exact stop point changes with each die set.
Sizing neighbours: a 20 mm bore gives 157 N push at 0.5 MPa against this model's 100.5 N, and 16 mm is already the smallest bore in the MA family, so upsizing is the only route to more force. Treat 60 N as the practical output and you keep a healthy reserve. Because the rod is only 6 mm over a 225 mm span, side thrust should be taken by external guides, not the rod.
The 30 mm window is set by the external stop screw and shortens the extend stroke only; it will not act as a brake when pressure drops. Choose FA flange or LB foot mounting, and the standard magnet pairs with EMSG or CMSG switches.
Quick checklist
Double-acting output is 100.5 N push and 86.4 N pull at 0.5 MPa, climbing to 140.7 N push at 0.7 MPa; the 1.0 MPa theoretical ceiling is 20.5 kgf. The pressure window is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, cushioning variable at both ends, and ports are M5x0.8.
A stop screw at the cover caps the extend travel anywhere inside the 30 mm ordered window, so the effective stroke can be shortened on site without swapping cylinders. It is purely a mechanical stop: it never lengthens travel past 225 mm and it does not lock the rod if air pressure is lost. Variable air cushioning at both ends still protects the covers.
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Covers non-human-caused product damage.
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