Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X125-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X125-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 125mm 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
- Stroke125 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 MACJ16X125-20S
A 20 mm window means the extend stop of the MACJ16X125-20S can sit anywhere from 105 to 125 mm, trimmed with a screwdriver on the installed cylinder. The action is double-acting with a variable air cushion at both ends; supply 0.15-1.0 MPa (22-145 psi) and run 30-800 mm/s.
Force at this bore reads 100.5 N push and 86.4 N pull at 0.5 MPa, or 140.7 N push at 0.7 MPa - but the number that sizes the machine is roughly 60 N of dependable working push. The riveted stainless barrel and hard-chrome 6 mm rod shrug off washdown that would rust a painted mini. Every unit ships with the magnet fitted, so CMSG, DMSG and EMSG sensors drop on for position feedback.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X125-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X125-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 125 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 MACJ16X125-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×125 | 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 MACJ16X125-20S Is Used
Carton flap tucker on a small case packer
Folds the last flap before gluing on a benchtop case packer; the 20 mm window tunes fold depth per carton size and 100.5 N at 0.5 MPa is ample for 300 g cartons.
Swing clamp on a drill jig
Clamps a bracket during drilling on a welding-shop jig; about 60 N of clamping effort at 0.5 MPa holds light steelwork without crushing it.
Index stop pin on a rotary fixture
Drops into a notch to lock a rotary indexing table; the magnet and a CMSG switch tell the PLC the pin is fully home before the next cycle starts.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X125-20S the Right Cylinder?
Compare bores rather than guess: this 16 mm unit gives 100.5 N push at 0.5 MPa, while the next size up, bore 20, offers 157.0 N push and 131.9 N pull under the same pressure; there is no smaller bore in the series. Fix it down with the FA flange for face mounting or the LB foot for base mounting, and add an I or Y knuckle where the load pivots. Watch side load at 125 mm of stroke on a 6 mm rod - external linear guides keep the rod straight when the load is cantilevered. And treat the adjuster as a position stop only: with no air behind it, the piston moves.
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 MACJ16X125-20S FAQ
At 0.5 MPa: 100.5 N extend, 86.4 N retract. At 0.7 MPa: 140.7 N extend, 120.9 N retract. The ceiling is 20.5 kgf theoretical at 1.0 MPa. Budget around 60 N for day-to-day work at 0.5 MPa; vertically that equals roughly 5 kg lifted at a 2:1 margin.
FA flange and LB foot are the catalogue mounts, with I and Y rod knuckles for pivoting loads; the adjustable-stroke version carries no SDB or back-cover code. The built-in magnet is part of every MA cylinder, so CMSG, DMSG or EMSG switches attach to the barrel for end-position signals.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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