Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S
The AirTAC MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S is a genuine double acting, double rod, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 20mm 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
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting, double rod, 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 MACJ50X20-10S
A short 20 mm stroke with a 10 mm trim window suits punch, clamp and ejection moves where every tenth of a millimetre counts.
The rolling-packed stainless barrel with a hard-chrome plated 16 mm rod stands up to washdown better than painted minis of the same size.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
MAJ / MACJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 (double rod, 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 MACJ50X20-10S Is Used
Terminal crimp punch
A 20 mm crimp punch needs short travel and high force; about 589 N of working effort at 0.5 MPa crimps terminals all day, with cushions removing end-of-stroke hammer.
Robot gripper clamp
Clamp sheet-metal blanks on a pick-and-place gripper; the 10 mm window fine-tunes grip travel while the magnet signals closed position via CMSG.
Mold ejection block
Eject moulded caps from a shallow cavity in 20 mm; the stainless barrel survives the humid, washdown-prone mould-shop air.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X20-10S the Right Cylinder?
For 20 mm moves, mounting is usually an LB foot under a fixture or an FA flange behind a punch plate, with I or Y knuckles for clamping links. The standard magnet pairs with CMSG, DMSG or EMSG switches for part-present sensing.
Treat the stop screw as an extend position limiter only; it will not clamp against a falling load when air is lost, so use an external lock for safety-critical holds.
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 MACJ50X20-10S FAQ
It operates on 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s, with the extend stroke adjustable within a 10 mm window and variable cushion at both ends.
No. The magnet is built in as standard on the whole MA family, so CMSG, DMSG or EMSG reed or electronic switches mount directly on the stainless barrel for end-of-stroke or part-present detection without any special-order hardware.
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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