Airtac MIJ Adjustable Cylinder MIJ40X40-30
The AirTAC MIJ Adjustable Cylinder MIJ40X40-30 is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke40 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 MIJ40X40-30
Dial in a precise forward end position on-site with the AirTAC MIJ40X40-30, a round-body stainless steel mini cylinder built for double-acting operation. An external stop screw lets you shorten the extend stroke by up to 30 mm, yielding a usable 10 to 40 mm forward travel while keeping full retract. This on-site adjustability allows one part number to cover several stop distances, absorbing setup tolerances without swapping hardware.
The stainless barrel and rod resist mild corrosion and washdown environments. It features a 1/4" port, a 16 mm rod with an M12x1.25 male thread, and fixed TPU bumper pads to decelerate the stroke end. Note this is a non-ISO-6432 size and this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors.
Airtac MIJ Adjustable Cylinder MIJ40X40-30 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X40-30 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MIJ40X40-30
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -30 | 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 MIJ40X40-30 Is Used
Variable Stroke Diverting
Diverts packages of varying sizes on a line by trimming the extend stroke on-site, adapting the stop position without changing the cylinder.
Is the Airtac MIJ Adjustable Cylinder MIJ40X40-30 the Right Cylinder?
If your load is lighter, stepping down to the MIJ32X40-30 drops the push force to 402.2 N, whereas moving up is impossible as 40 mm is the largest available MIJ bore. The 30 mm adjustment window is ideal for taking up mechanical tolerances during changeover. Remember the stop screw only trims the extend end; it is not a mid-stroke lock. The piston will drift on air loss, so add an external rod lock or pilot check valve for held loads. Mounting options include LB, FA, and TC styles, but the SDB pivot block is not available on this adjustable variant.
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 MIJ40X40-30 FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa. This 40 mm bore uses a 1/4" air port and a 16 mm rod with an M12x1.25 thread.
An external stop screw shortens the extend stroke by up to 30 mm on-site, but retract remains full and the screw is not a mid-stroke lock. This SKU has no magnet and cannot take CMSG, DMSG, or EMSG sensors; you need the -S variant for sensing. The stainless build resists mild corrosion.
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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