Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 50mm stroke, 1/8" 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.
- BoreØ40 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- 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 MACJ40X50-10S
AirTAC builds the MACJ40X50-10S as a double-acting round mini cylinder whose 50 mm extend stroke can be cut back by up to 10 mm with the built-in stop screw. A variable air cushion at both ends dials out impact, the same air works the rod out and back, and the 1/8" port feeds a 0.15-1.0 MPa (22-145 psi) supply at speeds from 30-800 mm/s.
Push force reaches 628.3 N at 0.5 MPa, which translates to about 377 N of practical work once a sensible reserve is kept. The riveted stainless tube and hard-chrome plated rod shrug off splash and washdown where painted minis corrode, and the standard onboard magnet snaps onto CMSG, DMSG or EMSG switches with no special-order piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MACJ40X50-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -10 | 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 MACJ40X50-10S Is Used
Bushings press-fit into pump housings
50 mm of travel with 628.3 N at 0.5 MPa seats small bushings, and the 10 mm window lets you stop the ram just above the part.
Stopper gate on a bottle infeed
The rod pops up to halt PET bottles between conveyor lanes; the stainless barrel tolerates daily caustic washdown.
Clamp for a welding fixture on brackets
Roughly 377 N of realistic holding clamps sheet steel plates while the variable cushion avoids jarring the fixture frame.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-10S the Right Cylinder?
Compare before you commit: the 32 mm bore delivers 402.2 N at 0.5 MPa and the 50 mm bore reaches 981.3 N, so pick this 40 mm unit when your clamp or kicker needs the middle 628.3 N class. If the 10 mm trim range feels tight, the MACJ40X50-20S and MACJ40X50-30S variants widen it. Mount on an FA flange or LB foot, add I or Y rod knuckles, and note the adjuster sets the end of travel but does not hold the load against drifting when air 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 MACJ40X50-10S FAQ
Bore 40 delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, and up to 128.1 kgf theoretical at 1.0 MPa. Air supply runs 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), and speed spans 30-800 mm/s.
The high-precision stainless barrel with its hard-chrome plated 16 mm rod resists rust and chemical splash, so the cylinder survives washdown and outdoor duty where painted minis pit. The piston's two-way seal also retains grease, extending service life.
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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