Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 75mm 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
- Stroke75 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 MACJ50X75-20S
Behind the 20 mm adjust window sits a 50 mm bore that pushes 981 N at 0.5 MPa, and this MACJ50X75-20S keeps that force inside a round stainless-steel barrel riveted to aluminium-alloy covers with a hard-chrome plated carbon-steel rod. It is double-acting with an adjustable extend stroke: an external stop screw trims extend travel anywhere within 20 mm, while a variable air cushion softens both ends. Working range is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
Count on about 589 N of usable push at 0.5 MPa rather than the full rating, which translates to lifting roughly 50 kg vertically with a 2:1 margin. That reserve matters for clamps and kickers cycling all shift. The magnet is built in as standard, so CMSG, DMSG or EMSG switches drop on without a special-order piston, and damp air or light washdown is no problem for the stainless tube.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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 MACJ50X75-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×75 | 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 MACJ50X75-20S Is Used
Bottling line stopper gate
Strokes a stainless stopper blade that pauses bottles ahead of the filler, with the 20 mm window dialled in to match bottle pitch.
Terminal crimp assistance
Pre-clamps wire terminals in a harness bench at about 589 N working force before the main press takes over.
Pallet sensor arm retract
Drives a presence-check arm at a forklift charging station, cushioned ends protecting the arm across 30-800 mm/s.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-20S the Right Cylinder?
Compare both directions before ordering: a 40 mm bore gives 628 N push at 0.5 MPa and a 63 mm bore reaches 1558 N, so this 50 mm unit fits mid-range clamping and pushing where the smaller bore starves and the larger is overkill. Keep in mind the stop screw limits extend travel only; it will not hold the rod against load if air pressure drops. Mounting choices are FA flange or LB foot, with I and Y rod knuckles for linkages, and PT, G or NPT port threads.
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 MACJ50X75-20S FAQ
At 0.5 MPa it pushes 981 N and pulls 881 N. At 0.7 MPa the figures rise to 1374 N push and 1233 N pull. Theoretical maximum force at 1.0 MPa is 200 kgf. Pressure spans 0.15-1.0 MPa (22-145 psi) with proof at 1.5 MPa (215 psi).
The extend stroke is trimmed by an external stop screw anywhere within the 20 mm window; it cannot lengthen travel past the ordered 75 mm. It is an end stop only - on air loss the piston still drifts, so it is not a load-holding lock. The variable air cushion at both ends is tuned separately.
Authorized Export Seller
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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