Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X30-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X30-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 MACJ40X30-10S
Short 30 mm travel and fine trim go together in the MACJ40X30-10S, whose 10 mm window tightens the extend position for clamp and press-fit stations. Double-acting with cushions at both ends, it runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi). Force class: 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, 128 kgf theoretical ceiling.
Because the 40 mm bore rides in a riveted stainless tube with a hard-chrome 16 mm rod, splash zones and humid cells do not scare it. The piston magnet is standard fitment, so snap a CMSG, DMSG or EMSG switch on for end-of-stroke signals. In practice, budget about 377 N for the actual work at 0.5 MPa, or roughly 32 kg of vertical lift at a 2:1 ratio.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X30-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X30-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MACJ40X30-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MACJ40X30-10S Is Used
Pneumatic clamp jaw
Clamping small brackets in a drill fixture: 628 N holds the part firmly and the 10 mm window sets exact jaw closure depth.
Ejector pin push
Kicking finished parts out of an injection mold nest, with twin cushions protecting the tooling through high cycle rates.
Presence check probe
Short probing strokes to confirm a casting sits home, signalled by a CMSG switch reading the standard built-in magnet.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X30-10S the Right Cylinder?
Drop to bore 32 (402 N push at 0.5 MPa) for light clamps or step up to bore 50 (981 N) for heavy grips; 628 N covers this class. The 10 mm stop trims extend travel only and does not hold position when air bleeds off. Fixed machines use the FA flange or LB foot, while I and Y knuckles suit pivoting tooling. The short 30 mm stroke keeps the 16 mm rod stiff, so side-load worries are minimal at correct alignment.
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 MACJ40X30-10S FAQ
Figures for the 40 mm bore: 628 N push and 528 N pull at 0.5 MPa; 880 N push and 739 N pull at 0.7 MPa; 128 kgf theoretical ceiling. The 10 mm window trims the 30 mm extend stroke with an external screw. It works across 0.15-1.0 MPa (22-145 psi) and 30-800 mm/s.
No special order is needed because the magnet is standard inside the piston; any CMSG, DMSG or EMSG switch clamps to the barrel for end-of-stroke signals. The twin air cushions matter here too, since short, fast clamping strokes are exactly where cover impact shows up.
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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