Airtac MIJ Adjustable Cylinder MIJ40X400-100S
The AirTAC MIJ Adjustable Cylinder MIJ40X400-100S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke400 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 MIJ40X400-100S
Dial in your forward end position on-site with the AirTAC MIJ40X400-100S, a round-body stainless mini cylinder featuring a 100 mm extend-stroke adjustment window. Rather than stocking multiple stroke lengths to handle setup variations or tolerance take-up, this double-acting unit lets you trim the forward travel anywhere between 300 and 400 mm via an external stop screw while maintaining full retract. The screw sets the end position but is not a mid-stroke lock.
It uses a 1/4" port, includes a magnet for position sensing, and relies on fixed TPU bumper pads to decelerate the stroke end.
Airtac MIJ Adjustable Cylinder MIJ40X400-100S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X400-100S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MIJ40X400-100S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -100 | 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 MIJ40X400-100S Is Used
Multi-Format Carton Feeding
Handle changeovers on a packaging line by using the 100 mm extend adjustment to push different carton sizes to a sealing station without swapping cylinders.
Variable Height Pallet Stops
Act as a heavy-duty physical stop for pallets up to 32 kg, tweaking the forward stop position on the fly to accommodate varying load depths.
Tolerance Take-Up Clamps
Secure heavy machined components by fine-tuning the extend end position to absorb part tolerances, ensuring consistent clamping without over-stroking.
Is the Airtac MIJ Adjustable Cylinder MIJ40X400-100S the Right Cylinder?
When sizing this Ø40 mm bore, check your force margins carefully. However, if you need to move heavier loads approaching the 628.3 N range, this Ø40 mm is the largest available in the series, so you would need to explore external tandem configurations for more power. The 100 mm adjustable stop is ideal for machines running mixed product sizes, letting one cylinder handle multiple staged feed distances.
Because the -S suffix denotes a built-in piston magnet, this SKU is fully ready for CMSG, DMSG, or EMSG position switches. For mounting, you can utilize LB foot, FA flange, or TC trunnion brackets, but note the SDB pivot-block is not offered on this adjustable variant. Remember that a standard pneumatic cylinder drifts on air loss; if your load must be held vertically during an emergency stop, add an external rod lock or pilot check valve.
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 MIJ40X400-100S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 100 mm, allowing you to set the forward end position between 300 and 400 mm; the retract stroke remains full. The -S suffix means it has a built-in magnet for CMSG/DMSG/EMSG sensors, and 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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