Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X75-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X75-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 75mm stroke, 1/8" 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.
- BoreØ40 mm
- Stroke75 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- 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 MACJ40X75-50S
Change pack sizes without changing cylinders: the 50 mm trim window on this MACJ40X75-50S lets a stop screw shorten extend travel across more than half the ordered stroke, with a variable air cushion waiting at each end to absorb the arriving load.
Bore 40 delivers 628.3 N at 0.5 MPa - size real work at about 377 N, or read it as roughly 32 kg vertical lift with a 2:1 factor. The riveted stainless barrel and 20 um hard-chrome rod take splash, humidity and outdoor duty that would ruin painted minis, while the grease-storing two-way piston seal keeps lubrication inside between services.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X75-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X75-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MACJ40X75-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -50 | 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 MACJ40X75-50S Is Used
Label press roller
Press an applicator roller onto labels across a mixed package run; dial the extend stroke anywhere within 50 mm when the pack size changes.
Sample tray lifter
Raise sample trays in a lab autosampler - the stainless barrel and chrome rod shrug off reagent splash that corrodes painted minis.
Fixture clamp on a CNC jig
Clamp aluminium billets on a machining jig; set the clamp point with the stop screw and verify closure with a DMSG switch on the standard magnet.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X75-50S the Right Cylinder?
One cylinder, roughly 25 to 75 mm of effective extend travel once the 50 mm window is applied - versus ordering a MACJ32 at 402.2 N or a MACJ50 at 981.3 N for fixed strokes. Remember the stop screw sets an end position, not a holding brake: with air gone the rod moves freely, so design the circuit accordingly. FA flange, LB foot, plus I and Y rod knuckles give mounting flexibility, the magnet is built in for CMSG, DMSG or EMSG sensing, and the 1/8" port suits compact valve manifolds.
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 MACJ40X75-50S FAQ
Push 628.3 N and pull 527.8 N at 0.5 MPa; push 879.6 N and pull 738.9 N at 0.7 MPa; peak theoretical 128.1 kgf at 1.0 MPa. The 1/8" port feeds a 0.15-1.0 MPa (22-145 psi) supply, with speeds of 30 to 800 mm/s.
Air cushioning is variable at both ends - screw it in as loads or speeds rise so the covers are protected across the whole 50 mm trim range. Mount on an FA flange or LB foot, add I or Y rod knuckles if the tooling swivels, and note the extend stop holds position only against the screw, not against a lost air supply.
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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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