Airtac MIJ Adjustable Cylinder MIJ40X50-40S
The AirTAC MIJ Adjustable Cylinder MIJ40X50-40S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 50mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke50 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM12×1.25
- CushionFixed TPU bumper pads
- 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 MIJ Adjustable Cylinder MIJ40X50-40S
Dial in your forward end position on-site with the AirTAC MIJ40X50-40S, a round-body stainless mini cylinder featuring an adjustable extend stroke. An external stop screw lets you shorten the forward movement by up to 40 mm, providing a usable extend range of 10-50 mm without swapping components. Because it carries the -S suffix, a built-in piston magnet enables position sensing with CMSG, DMSG, or EMSG switches.
Built with a riveted stainless-steel barrel and a Ø16 mm rod, this double-acting actuator resists mild corrosion and handles washdown environments.
Airtac MIJ Adjustable Cylinder MIJ40X50-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X50-40S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/4" |
| 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 | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MIJ Adjustable Cylinder MIJ40X50-40S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ40X50-40S Is Used
Heavy Clamping Press
The 40 mm extend adjustment lets operators dial in the exact clamp depth on the fly without changing tooling.
Staged Diversion Gate
Use the on-site stop screw to set multiple extend positions for routing different carton sizes. The stainless build withstands washdown, and the -S magnet tracks gate location via sensors.
Vertical Lift Stop
Fine-tune the raise height within the 10-50 mm window to match varying shelf clearances precisely.
Is the Airtac MIJ Adjustable Cylinder MIJ40X50-40S the Right Cylinder?
When sizing this 40 mm bore, compare it directly against the adjacent MIJ32 option. The 40 mm adjustment window is ideal for taking up mechanical tolerances during changeovers, letting one part number cover several intermediate stops.
Mounting options include LB foot, FA flange, and TC trunnion brackets, but note that the SDB pivot block is not available on this adjustable variant. Keep in mind that the external stop screw sets the end position but acts purely as a bumper stop, not a mid-stroke lock. The piston will drift if air pressure is lost, so install an external rod lock or pilot-operated check valve if you need to hold a suspended load safely.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
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 Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MIJ Adjustable Cylinder MIJ40X50-40S FAQ
This 40 mm bore cylinder uses a 1/4" air port and an M12x1.25 male rod thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 40 mm on-site, giving a usable forward range of 10-50 mm, while retract remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. It uses fixed TPU bumper pads for end deceleration, not an adjustable air cushion.
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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