
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 200mm 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.
Need a long trimming band? The MACJ50X200-50S lets the extend stroke of a 200 mm, 50 mm bore cylinder be dialed anywhere within a 50 mm window, double-acting with a variable cushion at each end. Push at 0.5 MPa is 981.3 N against 880.8 N on the return - in practical terms, budget about 589 N for the actual job to keep seal life long.
Construction is a riveted round barrel in stainless steel with a hard-chrome plated carbon-steel rod, so damp food-plant or outdoor air is not a problem. The magnet comes standard, letting CMSG, DMSG or EMSG switches report end positions from day one, and the dual cushions let you push cycle speeds toward 800 mm/s without cover damage.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 200 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. |
| ×200 | Stroke length in mm. |
| -50 | 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.
Kicking finished cases off a belt needs mid-range thrust: 981 N at 0.5 MPa clears a case row, and the 50 mm band tunes ejection distance per SKU.
A small ingredient hopper weighing about 45 kg can be lifted vertically with margin - 981.3 N equals roughly 100 kgf, halved for a 2:1 safety factor.
In a weld cell, clamping brackets before spatter flies; the stainless body tolerates coolant mist, and the stop screw sets clamp travel per part family.
Sizing check: a 40 mm bore delivers 628.3 N at 0.5 MPa while a 63 mm bore gives 1557.9 N, so pick the 40 for lighter clamps and the 63 for heavy press-fit work. With 200 mm of stroke, watch side load - long strokes amplify rod bending, so guide the load externally rather than cantilevering it on the 16 mm rod. Choose FA flange or LB foot mounts; note the adjustable version has no SDB or back-cover mounting codes.
Quick checklist
Push is 981.3 N and pull 880.8 N at 0.5 MPa; step up to 0.7 MPa for 1373.8 N push and 1233.1 N pull. Theoretical maximum at 1.0 MPa is 200.1 kgf. Pressure range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s with air filtered to 40 um.
No. It sets where the extend stroke ends within the 50 mm window, but it is not a mid-stroke lock or brake - if air pressure is lost the piston drifts. For positive holding, add a locking valve or external mechanical latch to the circuit.
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Covers non-human-caused product damage.
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