
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X50-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 50mm stroke, 1/8" 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.
Thirty millimetres of adjustability gives the MACJ32X50-30S plenty of on-site play: the external stop screw shortens the 50 mm extend stroke anywhere in that 30 mm range, and a variable air cushion at both ends lets you tune landing softness independently at each cap. The body is AirTAC's riveted MA construction - stainless barrel, rolled aluminium-alloy covers and a 12 mm rod hard-chrome plated to 20 um for corrosion resistance in damp shops.
This 32 mm bore pushes 402.2 N and pulls 345.6 N at 0.5 MPa, or 563.0 N and 483.8 N at 0.7 MPa, with a theoretical ceiling of 82 kgf at 1.0 MPa. For lifting sums, the 0.5 MPa push equals roughly 41 kg of vertical lift; keep a 2:1 margin and call it about 20 kg. No magnet order needed - it is built in, ready for CMSG or DMSG switches. Pressure range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X50-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | 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.
Knocking formed cartons out of a forming nest needs a firm short push; the 30 mm window lets operators retract the stop as tooling changes instead of refitting cylinders.
A short-stroke tensioner on a light conveyor drive benefits from the adjustable extend stop, which sets belt tension position once and repeats it through the cushioned stroke.
Tablet counters and small press stations use compact ejectors; the corrosion-resistant stainless barrel copes with frequent wipe-downs and the cushion protects fragile tablets from hard landings.
Weigh it against neighbours before committing: bore 25 manages 245.3 N at 0.5 MPa, bore 40 manages 628.3 N, and this bore's 402.2 N covers most light industrial pushes. Note that the stop screw only shortens the extend stroke within the ordered window - it cannot lengthen travel and it is not a brake, so a suspended load needs external locking if air is lost. Port is 1/8 inch, rod thread M10x1.25, and thread type is chosen at order time from PT (blank), G or NPT.
Quick checklist
At 0.5 MPa, 402.2 N push and 345.6 N pull; at 0.7 MPa, 563.0 N push and 483.8 N pull; 82 kgf theoretical maximum at 1.0 MPa. The operating window is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, air filtered to 40 um, and stroke speeds of 30-800 mm/s.
Each end of the stroke has a variable air cushion you can screw in or out to control deceleration. That lets you run cycles faster or move heavier loads without the piston slamming the covers - handy when the 30 mm trim window keeps changing the effective stroke during changeover.
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