Airtac MIJ Adjustable Cylinder MIJ40X125-75S
The AirTAC MIJ Adjustable Cylinder MIJ40X125-75S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 125mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke125 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 MIJ40X125-75S
Dial in a precise forward end position on-site with the AirTAC MIJ40X125-75S, a round-body stainless steel mini cylinder built for heavy-duty pneumatics. An external stop screw lets you shorten the extend stroke by up to 75 mm without changing the unit, while the full 125 mm retract remains untouched. This double-acting actuator uses a 1/4" port and a 16 mm piston rod with an M12x1.25 male thread.
The stainless barrel and rod resist mild corrosion and washdown environments. Equipped with the -S magnet, it supports CMSG, DMSG and EMSG sensors, and fixed TPU bumper pads decelerate the stroke ends.
Airtac MIJ Adjustable Cylinder MIJ40X125-75S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X125-75S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MIJ40X125-75S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -75 | 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 MIJ40X125-75S Is Used
Heavy Diverter Gate
Position large packaging diverters accurately; the 75 mm extend adjustment lets operators fine-tune the gate angle on-site to handle varying box widths without swapping actuators.
Multi-Stage Press Tool
Drive a forming tool where the extend endpoint must be tuned precisely for different material thicknesses, using the external screw to dial in the exact 50 to 125 mm forward stroke.
Is the Airtac MIJ Adjustable Cylinder MIJ40X125-75S the Right Cylinder?
There is no larger MIJ bore, so for forces beyond 628.3 N you must switch series entirely. The 75 mm adjustment window is highly useful for taking up mechanical tolerances during setup or covering multiple stop positions with one part number.
Remember that the stop screw only sets the extend end position; it is not a mid-stroke lock. The piston will drift on air loss, so fit an external rod lock or pilot check valve if you need to hold a suspended load. Mount via LB foot, FA flange or TC trunnion (SDB is unavailable here), and use CMSG/DMSG/EMSG switches thanks to the installed magnet.
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 MIJ40X125-75S FAQ
This 40 mm bore cylinder uses a 1/4" port. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 75 mm on-site, but the retract stroke remains full. The screw sets the end position and is not a mid-stroke lock. The -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG sensors.
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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