Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X50-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X50-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 50mm 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.
- BoreØ20 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MACJ20X50-10S
Where a fixed-stroke MAC pins you to one length, the MACJ20X50-10S arrives at 50 mm with a 10 mm trim band, so setters can shave the extend stroke on the machine instead of re-ordering. Output is 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push at 0.7 MPa, and variable air cushions damp both ends of travel.
The round shell is a riveted stainless tube with aluminium covers and a hard-chrome carbon-steel rod that shrugs off condensation near wash stations. Split the 16 kgf thrust figure in half and this cylinder lifts about 8 kg vertically on a 2:1 margin, while the factory-fitted magnet lets DMSG or EMSG switches read end positions with no special-order piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X50-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X50-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MACJ20X50-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -10 | 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 MACJ20X50-10S Is Used
Carton flap tuck on a case packer
A 50 mm stroke folds small flaps while the 10 mm window absorbs carton tolerance; 157 N at 0.5 MPa is ample for lightweight board.
Reagent tray indexing in a lab autosampler
The stainless barrel and chrome rod take splash from aqueous reagents in stride, and the cushion lands each tray quietly.
Feeder bowl part stop
Stops parts at the bowl exit with roughly 94 N of usable push at 0.5 MPa, sized with margin below the 157 N rating for jam loads.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X50-10S the Right Cylinder?
Put real outputs side by side: 100.5 N at 0.5 MPa from a 16 mm bore, 245.3 N from a 25 mm bore, and this 20 mm size between them. The 10 mm adjuster shortens extend only and never stretches travel past 50 mm; being an end stop rather than a brake, a dropped pressure line lets the load back-drive the rod, so rest the load mechanically where holding counts. Mount with an FA flange or LB foot, option an I or Y rod knuckle, keep side loads off the 8 mm rod on long offsets, and rely on the standard magnet to keep sensor wiring a clip-on job.
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 MACJ20X50-10S FAQ
At 0.5 MPa: 157 N push and 131.9 N pull. At 0.7 MPa: 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Bore is 20 mm, rod 8 mm, ports 1/8", supply 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
An external stop screw limits rod extension anywhere within the 10 mm window, and travel can never exceed the 50 mm base stroke. Variable cushions at both ends absorb the landing, and the standard-built magnet pairs with CMSG, DMSG and EMSG switches for position signals.
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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