Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X25-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X25-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 25mm 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
- Stroke25 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 MACJ63X25-20S
Among AirTAC's MA minis the MACJ63X25-20S is the heavyweight: a double-acting round-body cylinder, 63 mm bore, 25 mm stroke, and a 20 mm adjustable extend window set by a stop screw on the back cover. Both ends carry a variable air cushion, so faster cycles or heavier clamps stop gently. Expect 1558 N of push and 1457 N of pull at 0.5 MPa across a 0.15-1.0 MPa (22-145 psi) supply and 30-800 mm/s speed.
Its riveted stainless barrel with a hard-chrome carbon-steel rod stands up to humid plants and frequent washdown far better than painted aluminium minis. The position magnet is included as standard, dropping straight onto CMSG, DMSG or EMSG switch rails. Plan loads around 935 N of usable push at 0.5 MPa - in lifting terms, about 79 kg vertical with a 2:1 safety factor.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X25-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X25-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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 MACJ63X25-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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 MACJ63X25-20S Is Used
Weld fixture clamp
Clamps steel tube assemblies against a jig on a fabrication cell; 1558 N at 0.5 MPa holds parts square through welding without hydraulic plumbing.
Reject pusher
Pushes off-spec cartons off a checkweigher belt in a fixed 25 mm shove, cushioned so the packaging is not damaged at speed.
Chute gate control
Rets and releases a sliding mold gate or parts chute flap, with the 20 mm trim matching tool variations between changeovers.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X25-20S the Right Cylinder?
Size down to the 50 mm bore, worth 981 N at 0.5 MPa, when your clamp needs less force; nothing larger exists in the MA series, so a different family is required above 63 mm. The 20 mm window gives on-site latitude for fixture height changes between runs. Mount via FA flange or LB foot, and add I or Y knuckles for angled load lines. Remember the adjuster is purely a stroke stop - on air loss the piston will still move, so add external locking for held loads.
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 MACJ63X25-20S FAQ
Push is 1557.9 N and pull 1457.4 N at 0.5 MPa; at 0.7 MPa those rise to 2181.0 N and 2040.3 N. The theoretical ceiling at 1.0 MPa is 317.7 kgf. Port size is 1/4" for this bore and the rod thread is M14x1.5.
Both are standard. The piston magnet ships in every MACJ, so CMSG, DMSG and EMSG reed or electronic switches click on without a special piston, and the variable air cushion at each end is tuned with plain supply air - no extra hardware to buy.
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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