Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm 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.
- BoreØ50 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 MACJ50X250-50S
No other MACJ in this size gives you more room to trim than the -50 suffix: the MACJ50X250-50S adjusts its 250 mm extend stroke across a full 50 mm window using nothing but the external stop screw. The 50 mm bore delivers 981 N push and 881 N pull at 0.5 MPa, 1374 N at 0.7 MPa, inside a riveted stainless round barrel with aluminium covers.
Hard chrome on the 16 mm rod (20 um) plus a grease-storing two-way piston seal keep friction low through the 30-800 mm/s range, and the variable cushion at both ends soaks up the stop whether the load is light or near the 200.1 kgf theoretical ceiling. The magnet is standard, so CMSG, DMSG or EMSG switches read end positions out of the box. As a planning figure, 0.5 MPa output equals about 589 N of honest working force - a 50 kg vertical lift with the usual 2:1 margin. Pressure: 0.15-1.0 MPa (22-145 psi).
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MACJ50X250-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -50 | 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 MACJ50X250-50S Is Used
Multi-product end stop on a changeover cell
Set anywhere across the 50 mm window when product heights change; no cylinder swap, just a screw turn and a DMSG switch check.
Pallet-nesting stop on a dock leveller
981 N at 0.5 MPa seats the nested pallet stop against repeat impacts; cushioning softens every dock cycle.
Drawer eject on an electronics test rack
50 mm of trim covers two chassis depths; the stainless barrel shrugs off the mild solvents used around PCB cleaning.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-50S the Right Cylinder?
Lighter duty? The MACJ40 turns 628 N at 0.5 MPa in this same round format. Heavier? The MACJ63 pushes 1558 N. Keep in mind the adjuster limits extend travel only and holds nothing on its own: with air gone, the rod settles, so add a locking or clamping valve for suspended loads. FA flange or LB foot bolts it down, I and Y knuckles handle pivots, and a 250 mm stroke asks for aligned thrust - external guides for anything the 16 mm rod would see sideways. Threads: PT (blank), G or NPT.
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 MACJ50X250-50S FAQ
981 N push and 881 N pull at 0.5 MPa; 1374 N push and 1233 N pull at 0.7 MPa; 200.1 kgf theoretical maximum at 1.0 MPa. It is a double-acting 50 mm bore cylinder with a 250 mm stroke trimmed across a 50 mm adjustable window, cushioned at both ends, 30-800 mm/s, 0.15-1.0 MPa (22-145 psi), proof tested at 1.5 MPa (215 psi).
The stop screw sets where the extend stroke ends inside the 50 mm window; the variable air cushion at each end then decelerates the piston into that stop, so both the position and the landing shock are tunable. Note the screw is a position limit, not a brake - air loss still lets the rod drift.
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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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