
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X100-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 100mm 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.
The MACJ32X100-20S gives you a 100 mm double-acting stroke with a 20 mm stop-screw window, enough trim to match two or three fixture positions with one cylinder. Variable air cushioning at both ends tames end-of-stroke impact, and at 0.5 MPa the 32 mm bore pushes 402.2 N - enough to lift about 20 kg vertically with a 2:1 safety margin.
Like every MA-series cylinder it is a rolled, riveted round body: stainless barrel, hard-chrome plated carbon-steel rod, aluminium covers. Mild corrosion and washdown splash are non-events compared with painted minis. The piston magnet is fitted as standard, so CMSG, DMSG and EMSG switches mount straight on; supply is 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X100-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 100 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. |
| ×100 | Stroke length in mm. |
| -20 | 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.
Squares cartons against a backstop before strapping, with the 20 mm trim absorbing package variance.
Clamps aluminium housings on a CNC fixture, cushioned so the arm never slams the nest.
Feeds SMT component magazines onto a loader rail across 100 mm and signals home via a CMSG switch.
Size against the neighbours: bore 25 pushes 245.3 N at 0.5 MPa, bore 40 pushes 628.3 N - pick the smaller if force is spare, the larger if the load grows. Mount with the FA flange or LB foot and add an I or Y knuckle where the load pivots. Remember the 20 mm trim sets a mechanical extend stop; if the air supply fails the rod still moves, so it cannot park a suspended load on its own. For a double-rod version of this cushioned cylinder, see MACD.
Quick checklist
This 32 mm bore delivers 402.2 N push and 345.6 N pull at 0.5 MPa, rising to 563.0 N and 483.8 N at 0.7 MPa, with an 82 kgf theoretical peak at 1.0 MPa. Rod is 12 mm with M10x1.25 male thread; ports are 1/8 in.
FA flange and LB foot are the standard body options, with I and Y rod knuckles for pivoting loads, and the built-in magnet is already in place so CMSG, DMSG or EMSG switches can be fitted at any time.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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