Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 450mm 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
- Stroke450 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 MACJ50X450-75S
Wide tuning range defines the MACJ50X450-75S: its extend stroke can be set anywhere from 375 to 450 mm, the broadest window in this 450 mm series. The double-acting 50 mm bore pushes 981 N at 0.5 MPa, and dual variable cushions let you soften the last millimetres even at the top of the 30-800 mm/s speed band.
Budget about 589 N - 60% of the 0.5 MPa rating - for the actual work, which corresponds to lifting close to 100 kg vertically or about 50 kg with a 2:1 margin. The riveted stainless barrel with a chrome-plated rod stands up to outdoor and washdown duty, and the built-in piston magnet is ready for CMSG, DMSG and EMSG switches out of the crate.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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 MACJ50X450-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -75 | 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 MACJ50X450-75S Is Used
Case stop on a vertical lift elevator
The wide 75 mm window lets the stop ring catch cases at several heights between 375 and 450 mm, and 881 N of pull at 0.5 MPa retracts cleanly for the next cycle.
Carriage stop on a linear rail feeder
Set-up teams re-position the stop screw at each product changeover instead of swapping cylinders; 589 N of working push seats the carriage firmly against the detent.
Sample carousel index in a laboratory autoclave
Steam and condensate attack painted minis, but the stainless barrel and 20 um hard-chrome rod keep cycling; the standard magnet drives an EMSG switch for index confirmation.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-75S the Right Cylinder?
Bore 40 tops out at 628 N push at 0.5 MPa; bore 63 lifts the ceiling to 1558 N. Remember the stop screw trims the extend stroke and is not a position lock - under air loss the piston still moves, so add a valve or external brake if holding matters. FA or LB mounting plus I and Y knuckles handle the fixturing, the magnet is fitted as standard, and a long reach with a 16 mm rod means side loads belong on external guides, not on the cylinder.
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 MACJ50X450-75S FAQ
Push force at 0.5 MPa is 981 N and pull is 881 N; at 0.7 MPa expect 1374 N push and 1233 N pull. The theoretical peak at 1.0 MPa is 200 kgf. Supply pressure runs 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), and cycling speed spans 30-800 mm/s.
The rolled stainless tube plus a 20 um hard-chrome plated carbon rod shrug off condensation, splash and mild chemicals, extending life in food, outdoor or coolant-heavy cells where painted bodies corrode. The two-way piston seal also stores grease, cutting relubrication stops.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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