
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 50mm 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.
The MACJ16X50-30S pairs a 50 mm stroke with a 30 mm extend-trim window, so one cylinder covers several stop positions on a 16 mm bore. Double-acting throughout with a variable air cushion, it delivers 100.5 N push and 86.4 N pull at 0.5 MPa, climbing to 140.7 N push at 0.7 MPa. Running pressure spans 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
The riveted stainless barrel shrugs off washdown and mild corrosion that swells painted minis, while a hard-chrome 6 mm rod keeps sealing surfaces smooth. Cushioning at each end dials out deceleration shock so you can run faster without hammering the covers, and because the magnet is built in as standard, CMSG / DMSG / EMSG switches clip on without special ordering. For planning, count on roughly 60 N of usable push at 0.5 MPa - enough to lift about 5 kg vertically with a 2:1 margin.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 50 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. |
| ×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.
The 50 mm stroke clears light components off a fixture and 100.5 N at 0.5 MPa is ample for parts under 6 kg, while the 30 mm trim window lets one cylinder serve several jig sizes.
The magnet ships as standard, so a CMSG switch confirms the pin is home on a rotary indexing table; the variable cushion stops rattle even at the 800 mm/s top speed.
A stainless round barrel tolerates the damp air around food-grade wrapping stations, and 86.4 N pull at 0.5 MPa folds light flaps through the full 50 mm.
Bore 16 is the smallest in the MA range; if 100.5 N at 0.5 MPa falls short, step up to a bore 20 (157.0 N) or bore 25 (245.3 N) MACJ. The -30 adjuster acts as a mechanical end stop for the extend stroke only - it is not a mid-stroke lock, and the rod will drift if air is lost. Mount with an FA flange or LB foot, add I or Y rod knuckles for swivel joints, and order thread PT (blank), G or NPT.
Quick checklist
At 0.5 MPa it pushes 100.5 N and pulls 86.4 N; at 0.7 MPa those rise to 140.7 N and 120.9 N. Theoretical maximum is 20.5 kgf at 1.0 MPa. The bore is 16 mm with a 6 mm rod and M5x0.8 ports, stroke 50 mm trimmable by 30 mm, pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, double-acting with cushioning at both ends.
No. Every MACJ16X50-30S leaves the factory with a piston magnet already fitted, so CMSG, DMSG or EMSG switches mount straight onto the stainless barrel and sense both end positions without any special-order piston.
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