Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X400-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X400-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 MACJ50X400-30S
A 400 mm stroke in a 50 mm round stainless barrel gives this MACJ a long reach, and the 30 mm adjust window means engineers can pull the extend stop back later as a product or fixture changes - no cylinder swap, no re-plumb. It is double-acting with a variable air cushion at each end, working range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s. At 0.5 MPa it develops 981 N of push; at 0.7 MPa, 1374 N.
Unlike painted mini cylinders that rust at the first washdown, the riveted stainless barrel and 20 um hard-chrome rod shrug off moisture, coolants and outdoor exposure. The piston magnet comes as standard, so EMSG or CMSG switches mount instantly. In practice, plan around 589 N of usable push at 0.5 MPa - about 50 kg of vertical lift with a 2:1 safety factor.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X400-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X400-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 MACJ50X400-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 MACJ50X400-30S Is Used
Bin-dumping ejector at line end
Eject filled bins off a roller conveyor into a chute; the 30 mm trim tunes the eject position after bin size changes without re-ordering the cylinder.
Spindle-slide guard on a lathe
Slide a telescoping guard over a turning spindle; cushioning at both ends keeps the guard from slamming at either end of its 400 mm travel.
Deep-shelf pick pusher
Push cartons off a 400 mm deep picking shelf; 981 N at 0.5 MPa moves a full carton even with slight shelf friction or product overhang.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X400-30S the Right Cylinder?
The 40 mm bore (628 N at 0.5 MPa) suits lighter gates; the 63 mm bore (1558 N) handles heavier strokes - the 50 mm at 981 N is the middle path. Note the adjuster trims the extend stroke as an end stop only; if air pressure drops the rod will drift, so use a blocking valve where holding matters. Choose FA flange or LB foot mounting, plus I or Y rod knuckles for linkage ends. Long strokes amplify misalignment, so pilot the load and check couplings over the full 400 mm.
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 MACJ50X400-30S FAQ
This 50 mm bore pushes 981.3 N and pulls 880.8 N at 0.5 MPa. Raise supply to 0.7 MPa and push reaches 1373.8 N, pull 1233.1 N. Theoretical max at 1.0 MPa is 200.1 kgf. Operating range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Mounting options are the FA flange or LB foot, plus I or Y rod knuckles for pivoting linkages. The built-in piston magnet is standard equipment, so CMSG, DMSG and EMSG switches clamp to the stainless barrel for end-of-stroke signals without ordering a special cylinder.
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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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