Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 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 MACJ63X250-20S
A stop screw on the cylinder sets the extend stroke of the MACJ63X250-20S anywhere inside a 20 mm window, so one unit can serve several fixture depths without re-ordering. Air drives the piston both ways - 1557.9 N out and 1457.4 N back at 0.5 MPa, rising to 2181.0 N and 2040.3 N at 0.7 MPa - with a 317.7 kgf theoretical maximum, and variable cushions at each end tame the arrival of this large-bore piston at speed.
Construction follows the MA recipe: a stainless-steel barrel with aluminium-alloy covers rolled on, and a carbon-steel rod hard-chromed to 20 um, so splash zones and outdoor duty do not chew it up the way they do painted mini cylinders. FA flange and LB foot mounts, plus I and Y rod knuckles, cover most fixture styles. Pressure spans 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s. For sizing, count on roughly 935 N of honest push at 0.5 MPa - enough to raise about 79 kg vertically at a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 MACJ63X250-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 MACJ63X250-20S Is Used
Lift-assist gantry post
Raises fixture plates on a 250 mm lift; with a 2:1 margin the bore lifts about 79 kg vertically before counterbalance is added.
Capping head on a filling line
Drives a capping or corking head with 1558 N of push; the 20 mm trim sets cap seating depth during product changeover.
Assembly-cell part clamp
Clamps brackets in a robotic weld cell; DMSG and CMSG switches on the built-in magnet give the PLC confirmation of both ends.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-20S the Right Cylinder?
Compare both directions before ordering: the 50 mm bore makes 981.3 N at 0.5 MPa (roughly 60% of this bore's 1557.9 N), while nothing larger exists in the MA line - past 63 mm you move to a different AirTAC family. The 250 mm stroke magnifies any misalignment, so external guides should carry side forces. FA flange and LB foot mounts plus I / Y knuckles suit most fixtures, and the standard magnet accepts CMSG / DMSG / EMSG switches out of the box. Treat the end stop as a position setter, never as a brake that holds against air loss.
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 MACJ63X250-20S FAQ
Rated 1557.9 N push / 1457.4 N pull at 0.5 MPa and 2181.0 N push / 2040.3 N pull at 0.7 MPa, with 317.7 kgf theoretical at 1.0 MPa. Its stop screw shortens the extend stroke by up to 20 mm from the ordered 250 mm - it never lengthens it - while both-end cushions and the 30-800 mm/s speed range remain unchanged.
Both ends carry a variable cushion, so the energy of a heavy 63 mm piston arriving at up to 800 mm/s is bled off progressively instead of hammering the covers. Set the cushion screws once per application and the cylinder keeps absorbing end-of-stroke shock even at 0.7 MPa working pressure.
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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