Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 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 MACJ40X200-50S
A double-acting AirTAC MA-series round-body mini cylinder with an on-machine adjustable extend stroke: the -50 stop screw trims the 200 mm stroke by up to 50 mm, and a variable air cushion at each end soaks up end-of-stroke shock. At 0.5 MPa the 40 mm bore delivers 628.3 N push and 527.8 N pull (879.6 N push at 0.7 MPa, peaking at 128.1 kgf theoretical). For continuous work plan around 377 N of usable push - enough to raise about 32 kg vertically with a 2:1 margin.
The riveted stainless round barrel and 16 mm hard-chrome plated rod shrug off washdown and damp shop air, a real edge over painted-steel minis in food and outdoor cells. The magnet is built in as standard, so CMSG, DMSG or EMSG switches snap on without a special piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 MACJ40X200-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MACJ40X200-50S Is Used
Bottling line push-off
Ejects misaligned bottles from a filling conveyor at up to 800 mm/s, with the 50 mm window tuned to lane width and cushions set to stop glass quietly.
Carton divert gate
Swings a sorting flap between lanes; 628 N of push seats the gate against a loaded stream while the end cushion kills the slam.
Auto-stop press feed
The standard magnet plus a CMSG switch confirms rod home before a stamping feed advances, so a half-stroke never reaches the die.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-50S the Right Cylinder?
At 628 N push this 40 mm bore sits comfortably above the 32 mm size (402.2 N at 0.5 MPa); if your load needs more than half the rating, the 50 mm bore (981.3 N) is the next step. The stop screw shortens the extend stroke only - it is an end stop, not a mid-stroke lock, so the rod will drift if air is lost. Mount it FA flange or LB foot; speed runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
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 MACJ40X200-50S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa push rises to 879.6 N and pull to 738.9 N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. It is double-acting with an adjustable extend stroke (50 mm window), variable air cushion at both ends, 30-800 mm/s speed and a 0.15-1.0 MPa (22-145 psi) working range.
No. The screw is a mechanical end stop that trims the extend stroke within 50 mm; it cannot lock mid-travel, so the rod still drifts when pressure is lost. Use it to set final position only and treat any load as unsupported on air loss. For position feedback, the standard magnet drives CMSG, DMSG or EMSG switches.
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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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