Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S 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.
- BoreØ16 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM6×1.0
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S
A 20 mm tuning band on a 50 mm stroke gives this 16 mm MACJ real flexibility on semi-auto fixtures: the extend stop screws in from 50 mm down to as little as 30 mm of travel without changing the part number. Double-acting and cushioned at both ends, it turns 0.5 MPa into 100.5 N of push and 86.4 N of pull (140.7 N of push at 0.7 MPa), across a 30-800 mm/s speed band on air at 0.15-1.0 MPa (22-145 psi).
Plan on close to 60 N of sustained output at 0.5 MPa - enough to raise a 5 kg tray vertically with the usual 2:1 factor of safety. The stainless rolled barrel and hard-chrome rod take damp compression stations in stride where painted minis would corrode, and with the magnet included as standard, CMSG, DMSG or EMSG switches drop straight on for end-of-stroke confirmation.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S |
|---|---|
| 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.
Theoretical Output Force (Ø16mm)
| 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.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×50 | 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.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S Is Used
Lid press on a cosmetic filling bench
Pressing snap-on lids on 30 ml bottles needs steady force, not brute strength; about 60 N of continuous push at 0.5 MPa does the job and the 20 mm trim absorbs lid height variations.
Vial stopper gate under a tablet counter
The 100.5 N output at 0.5 MPa easily indexes glass vials into position, while dual variable cushions stop the gate silently in a pharmacy-grade workspace.
Probe lift on an inline ampoule leak tester
Raising a test probe roughly 5 kg-equivalent vertically suits the 50 mm travel, and the stainless barrel plus chrome rod shrug off the water bath splash around leak test stations.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S the Right Cylinder?
Next size up from this bore is the MACJ20 at 157.0 N of push at 0.5 MPa; if the machine needs well under 60 N of real work, the same 16 mm bore in a fixed-stroke MACJ body is the simpler alternative. Mount via FA flange or LB foot, with I and Y rod knuckles suiting swing links. Keep side loads off the 6 mm rod over this 50 mm travel or guide the load externally. The rod stays free to move if air is lost, so never count on the stop screw to park a load.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X50-20S FAQ
At 0.5 MPa the cylinder pushes 100.5 N and pulls 86.4 N; step up to 0.7 MPa for 140.7 N of push and 120.9 N of pull, with 20.5 kgf as the theoretical peak at 1.0 MPa. Air ports are M5x0.8 and the rod threads M6x1.0.
Yes - the -20 in the model code is the window over which the extend stop can be set, so the 50 mm stroke shortens anywhere between 50 and roughly 30 mm. It only shortens the extend stroke; it does not add travel or hold a load. The variable air cushions at both ends are set independently of the stop.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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