Airtac MIJ Adjustable Cylinder MIJ25X45-40S
The AirTAC MIJ Adjustable Cylinder MIJ25X45-40S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø25mm bore and 45mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface fits standard ISO 6432 mini-cylinder mounting interfaces.
- BoreØ25 mm
- Stroke45 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM10×1.25
- 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 MIJ25X45-40S
Dial in a precise forward end position on-site with the AirTAC MIJ25X45-40S, a round-body stainless steel mini cylinder featuring a 40 mm external stop screw that shortens the extend stroke down to a 5 mm minimum. Because the adjuster trims only the forward end, you get full retract action while covering multiple stop distances with a single part number.
Built with a corrosion-resistant stainless barrel and rod, this double-acting unit conforms to the ISO 6432 mounting interface for straightforward bracket and clevis drops. The -S suffix indicates a built-in piston magnet ready for CMSG, DMSG, or EMSG sensors. It uses a 1/8" port, fixed TPU bumper pads to decelerate the stroke ends, and operates at speeds from 30 to 800 mm/s across a -20 to +70 C temperature range.
Airtac MIJ Adjustable Cylinder MIJ25X45-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ25X45-40S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 45 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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.
Theoretical Output Force (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 MIJ25X45-40S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×45 | 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 MIJ25X45-40S Is Used
Changeover Pallet Stops
Fine-tune the forward stop point for different pallet sizes on a packaging line, using the external screw to dial in the exact position while the full retract clears the conveyor path.
Is the Airtac MIJ Adjustable Cylinder MIJ25X45-40S the Right Cylinder?
When sizing this 25 mm bore, stepping down to a 20 mm MIJ drops the 0.5 MPa push force to 157 N, while moving up to a 32 mm MIJ raises it to 402 N. The 40 mm adjustment window is highly useful for taking up mechanical tolerances or setting up staged feeds without machining new hard stops. Mount using LB foot, FA flange, or TC trunnion brackets, as the SDB pivot block is not offered on this adjustable variant.
Keep in mind the external screw sets the forward end position but 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 vertical load. The included magnet allows direct CMSG, DMSG, or EMSG sensor mounting.
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 MIJ25X45-40S FAQ
The theoretical maximum force is 50 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 40 mm, letting you set the forward end between 5 and 45 mm without affecting the full retract. The -S suffix means a piston magnet is included for CMSG, DMSG, or EMSG sensors. The stainless build resists mild corrosion.
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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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