Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 100mm 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
- Stroke100 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 MACJ50X100-20S
Trim up to 20 mm off the extend stroke of a Dia 50 mini cylinder without swapping parts. The MACJ body is a rolled, riveted stainless tube with a hard-chrome carbon-steel rod - no tie-rod bolts to slacken, no profile edges to collect grime. Double-acting with variable cushions at both covers, it delivers 981.3 N forward and 880.8 N back at 0.5 MPa.
Set the external stop screw anywhere inside the 20 mm window and the cushions dial out impact, so faster cycling to a firm stop is realistic. Plan on roughly 588 N of usable push at 0.5 MPa; with a 2:1 margin the bore lifts about 50 kg vertically. The magnet is fitted as standard and pairs with CMSG, DMSG and EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 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 MACJ50X100-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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 MACJ50X100-20S Is Used
CNC fixture clamp
Clamps cast aluminium housings in a machining fixture; the 20 mm window absorbs casting tolerance so clamping depth stays consistent.
Test rig sample press
Presses samples in a laboratory test rig where the exact extend point is tuned on site and the magnet feeds a DMSG position signal.
Small part ejector
Kicks formed parts out of a trim die; dual cushions let the stroke run quick yet land without hammering the die face.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X100-20S the Right Cylinder?
If 981.3 N at 0.5 MPa is more than the job needs, step down to a 40 mm bore (628.3 N); if the load sits near the 588 N working force, move up to 63 mm (1557.9 N). FA flange and LB foot brackets, along with I and Y knuckles, cover most mounting cases. For a fixed-stroke equivalent look at the MAC, or the MAJ where a bumper fits the cycle. The adjuster is an end stop for the extend stroke only; it will not hold the load if supply pressure fails.
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 MACJ50X100-20S FAQ
Push is 981.3 N and pull 880.8 N at 0.5 MPa. Raise supply to 0.7 MPa and you get 1373.8 N push with 1233.1 N pull; at a theoretical 1.0 MPa the bore reaches 200.1 kgf. Operating band is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, double-acting throughout.
No. Every MACJ ships with a built-in magnet as standard equipment, so CMSG, DMSG or EMSG reed and Hall switches clamp straight onto the barrel and read the piston position out of the box.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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