Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 50mm 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.
- BoreØ50 mm
- Stroke50 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- 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 MACJ50X50-40S
Wet food rooms and outdoor gantries are where a stainless round-body MA cylinder earns its keep, and the MACJ50X50-40S adds a generous 40 mm extend-stroke trim window on top of that corrosion-resistant build. Double-acting with a variable cushion at each end, it is set on site by an external stop screw rather than a new part number.
Rated 981.3 N push and 880.8 N pull at 0.5 MPa (200.1 kgf theoretical maximum at 1.0 MPa), that works out near 589 N of practical working force - a fit for diverts, gates and clamps that must not over-travel. Position signals come at no extra cost: the standard built-in magnet accepts CMSG, DMSG or EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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.
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -40 | 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 MACJ50X50-40S Is Used
Tote divert
Wet-washdown conveyor diverts in beverage plants benefit from the stainless barrel plus 981 N of push at 0.5 MPa.
Glue gate control
Trimming extend travel over the 40 mm band positions a hot-melt gate nozzle exactly against the carton seam.
Lid close-down
Snapping lids onto small castings or pails takes about 589 N of working force with the stop set just above the part.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X50-40S the Right Cylinder?
Against its neighbours, this bore splits the difference: 628.3 N push at 0.5 MPa on a MACJ40, 1557.9 N on a MACJ63, 981.3 N here. Vertical lifting works out near 100 kg at full rating - halve it to about 50 kg for a 2:1 margin before choosing tooling mass.
FA and LB mountings plus I / Y rod knuckles cover most frames; the adjustable cylinder has no SDB or back-cover code in the range. Treat the stop screw as an extend-position stop, not a load brake - with air off the rod can still be pushed. 1/4" ports (PT, G or NPT) and an M14x1.5 male rod thread complete the picture.
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 MACJ50X50-40S FAQ
Push is 981.3 N at 0.5 MPa and 1373.8 N at 0.7 MPa; pull is 880.8 N and 1233.1 N respectively. Theoretical maximum is 200.1 kgf at 1.0 MPa, so about 100 kg of vertical lift at full rating. Keep working loads near 589 N and treat the 40 mm stop as a position limit, not a load-holding lock.
No - every MACJ ships with the magnet built in, so CMSG, DMSG or EMSG switches drop on for end-position detection with no special-order piston. That pairs with the standard 1/4" ports (PT blank, with G or NPT thread options) and FA flange or LB foot mounting.
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Genuine AirTAC parts produced by AirTAC factory.
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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