Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S 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 MACJ63X125-20S
Among the 63 mm adjustable variants, the MACJ63X125-20S splits the difference: a full 125 mm travel with a 20 mm extend-stroke trim band, double-acting and cushioned at both ends. Expect 1557.9 N pushing at 0.5 MPa and 2181.0 N if you run the supply at 0.7 MPa.
AirTAC's rolling-packed body - stainless tube, hard-chrome rod, aluminium covers - suits damp plants that quickly eat painted minis. For a lifting axis, budget on about 79 kg vertical, the 158 kgf push figure halved for a 2:1 margin. If you later want the same bore with a fixed 125 mm stroke, look at the MAC series; for tooling on both rod sides, the double-rod MACD covers it.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S |
|---|---|
| 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 MACJ63X125-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 MACJ63X125-20S Is Used
Gate ram on a foundry sand hopper
1557.9 N of push opens the sand column reliably; the end cushions absorb the gate slamming home at speed.
Busbar press-in on a panel assembly cell
Presses connectors into DIN rails with about 935 N of usable force; the 20 mm window handles rail depth tolerance.
Index pawl on a rotary table
The 16 mm rod pushes the pawl home between dial moves; a DMSG switch confirms engagement to the controller.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S the Right Cylinder?
Choose it over the 50 mm bore (981.3 N at 0.5 MPa) whenever your work figure clears roughly 935 N or you want cushion-tuned speed anywhere from 30 to 800 mm/s. The -20 window trims the extend stroke only; retraction always runs the full 125 mm. Note the stop screw sets the end of travel but holds nothing: if the supply drops, the rod and its load coast, so fit a blocking valve where a raised load must stay put.
Magnet ships standard for CMSG / DMSG / EMSG switches, and FA flange or LB foot plus optional I and Y rod knuckles cover frame mounting - the adjustable series does not offer SDB.
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 MACJ63X125-20S FAQ
Push 1557.9 N and pull 1457.4 N at 0.5 MPa; 2181.0 N push and 2040.3 N pull at 0.7 MPa; 317.7 kgf theoretical maximum at 1.0 MPa. Operating band is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, speed 30-800 mm/s, 125 mm stroke and a 20 mm adjustment band.
FA flange or LB foot bolts it to the frame, and I and Y rod knuckles handle pivoting linkages, though the adjustable series drops SDB. Feedback needs no ordering decision: the magnet is built into the piston as standard, so CMSG, DMSG and EMSG switches snap onto the stainless barrel whenever the PLC needs a signal.
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.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X125-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.