Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 200mm 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
- Stroke200 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 MACJ50X200-20S
Set the extend stroke wherever the job needs it: the -20 version of this 200 mm MACJ accepts a trim of up to 20 mm via its external stop screw, so one part number serves several station lengths. Underneath, the 50 mm bore does the lifting - 981 N out at 0.5 MPa, 881 N back on retract, and about 200 kgf theoretical at 1.0 MPa. A variable air cushion at each end tames the stop at 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) supply air.
It is built on the MA round-body platform: stainless tube rolled together with aluminium covers over a stainless block, a hard-chrome 16 mm rod that survives washdown, and grease-storing two-way piston seals. The magnet is part of the standard build, so CMSG, DMSG or EMSG switches attach without ordering anything special. For planning: count on about 589 N of practical force at 0.5 MPa, equivalent to hoisting roughly 50 kg vertically at a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 200 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 MACJ50X200-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 MACJ50X200-20S Is Used
Automotive bracket ejection
Ejects stamped 50 kg brackets off a press die. Working near 589 N leaves a 2:1 margin, and the 20 mm trim handles die-height changes between runs.
Bakery tray lower-down
Lowers stacked baking trays about 180 mm at a washdown-prone bakery line; the stainless barrel and chrome rod resist the humid, floury environment.
Rotary table index assist
Assists a 400 mm rotary indexing table through its final 200 mm of travel, with cushions absorbing the stop and the magnet confirming index-complete.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X200-20S the Right Cylinder?
Force-wise, this 50 mm bore sits between the 40 mm MACJ (628 N push at 0.5 MPa) and the 63 mm (1558 N push), making it the natural choice once loads pass about 40 kg or speeds climb. Keep in mind the 20 mm adjuster only sets a shorter extend stroke - it is an end stop, not a lock, so an unsupported load will sag if supply air fails. FA flange and LB foot are the mounting options, with I or Y rod knuckles available for swinging loads, and a 200 mm stroke deserves external guiding to protect the rod from side load.
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 MACJ50X200-20S FAQ
At 0.5 MPa: 981 N extend, 881 N retract. At 0.7 MPa: 1374 N extend, 1233 N retract. Theoretical ceiling around 200 kgf at 1.0 MPa. Bore 50 mm, rod 16 mm with M14x1.5 male thread, ports 1/4 in., pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, extend stroke trimmable within a 20 mm window.
It matters daily. The rolled stainless barrel plus the 20 um hard-chrome-plated carbon-steel rod resist rust and pitting in damp, food-wash or outdoor air, where painted or plain aluminium mini cylinders corrode and start leaking at the seals. Combine that with the standard-built magnet and the variable cushion at each end, and you get long seal life plus position feedback at no extra order cost.
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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