Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 125mm 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
- Stroke125 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 MACJ63X125-30S
A 63 mm round-body mini cylinder built on a riveted stainless-steel barrel with rolled aluminium covers, the MACJ63X125-30S pushes 1557.9 N at 0.5 MPa and pulls 1457.4 N on the return. Its extend stroke can be trimmed anywhere inside a 30 mm window with the built-in stop screw, and a variable air cushion at both ends soaks up end-of-stroke shock across a 30-800 mm/s speed band.
Plan real work around roughly 935 N (about 60 percent of the 0.5 MPa push rating) and the cylinder stays clear of its limits for years. The hard-chrome plated 16 mm rod and grease-retaining piston seals shrug off damp plant air and washdown far better than painted-steel minis, and the piston magnet ships standard, so CMSG, DMSG or EMSG switches bolt on without a special order.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 MACJ63X125-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -30 | 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 MACJ63X125-30S Is Used
Weld-fixture clamping
Clamps steel tube assemblies against fixture stops on automotive subframe weld lines, where the 30 mm trim window absorbs tooling tolerance.
Draw-die ejector
Pushes formed panels clear of a stamping draw die; 1557.9 N at 0.5 MPa ejects sticky parts without hammering the die at stroke end.
Bottling-line gate
Diverts or blocks bottles at a filler lane changeover, with the both-end air cushion absorbing repeated high-speed stops.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-30S the Right Cylinder?
Against the 50 mm bore (981.3 N push at 0.5 MPa) this 63 mm version adds roughly 59 percent more push, and it is the largest bore in the AirTAC MA mini series, so there is no step up from here. The adjuster is a mechanical end stop that shortens the extend stroke only; it never locks the piston mid-stroke, so on air loss the rod still drifts and a separate holding valve is needed for suspended loads. Mount with an FA flange or LB foot, add I or Y rod knuckles if the tooling swings, and keep side loads off the 16 mm rod by guiding the load externally over this 125 mm stroke.
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 MACJ63X125-30S FAQ
At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N; at 0.7 MPa that rises to 2181.0 N push and 2040.3 N pull, with a theoretical maximum of 317.7 kgf at 1.0 MPa. These are double-acting figures for the 63 mm bore with a 16 mm rod, so the return stroke loses some area to the rod side.
No. Every MA-series cylinder, including the MACJ63X125-30S, carries a built-in piston magnet as standard equipment. CMSG, DMSG and EMSG reed or electronic switches mount directly on the stainless barrel and read end-of-stroke or intermediate positions without any special-order piston.
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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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