Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X400-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X400-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 400mm 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.
- BoreØ63 mm
- Stroke400 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 MACJ63X400-20S
Long reach with a soft finish: the MACJ63X400-20S drives a 400 mm extend stroke that can still be trimmed through a 20 mm window, double-acting in both directions with a variable air cushion at each end. The 63 mm bore tops the MA mini range at 1557.9 N push and 1457.4 N pull at 0.5 MPa.
Size the job around 935 N of working push at 0.5 MPa, or roughly 79 kg of vertical lift at a 2:1 margin. A long throw magnifies side loads, so the hard-chrome plated 16 mm rod and the stainless barrel it runs in earn their keep - keep thrust on the rod axis and guide the load externally. The magnet comes fitted as standard, so CMSG, DMSG or EMSG switches read position with no options to order.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X400-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X400-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 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 MACJ63X400-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 MACJ63X400-20S Is Used
Pallet transfer pusher
Sweeps pallets across a 400 mm transfer stroke; 1557.9 N at 0.5 MPa moves loaded dollies from a staging lane onto the take-away conveyor.
Sliding guard door actuator
Opens a machine guard over 400 mm; the 20 mm trim window sets the exact open gap and the cushion stops the panel without a bang.
Deep-bin ejector on a sortation line
Ejects parcels into 400 mm-deep chutes at up to 800 mm/s, landing cushioned so labels and contents stay intact.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X400-20S the Right Cylinder?
Stroke check: 400 mm is inside the 500 mm standard-stroke ceiling for 63 mm bores, so it ships as a standard part. If the load needs under about 590 N at 0.5 MPa, the 50 mm bore (981.3 N push) does it cheaper. Supply 0.15-1.0 MPa (22-145 psi); cycle 30-800 mm/s. On a throw this long, guide the load in external slides and keep thrust on the rod axis - side force bends the 16 mm rod. FA flange or LB foot mounting; I or Y knuckle for linkages. The 20 mm adjuster fixes the extend endpoint, but with air off the piston is not locked and a hanging load will drift it.
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 MACJ63X400-20S FAQ
At 0.5 MPa expect 1557.9 N push and 1457.4 N pull; at 0.7 MPa, 2181.0 N push and 2040.3 N pull; ceiling 317.7 kgf at 1.0 MPa. Air connects through a 1/4 inch port and the rod thread is M14x1.5.
Side forces on a long throw bend the 16 mm hard-chrome rod and wear the barrel, so mount with an FA flange or LB foot and run the load in external slides; the 1/4 inch port feeds enough air for 30-800 mm/s cycling.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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