Airtac MIJ Adjustable Cylinder MIJ40X15-20S
The AirTAC MIJ Adjustable Cylinder MIJ40X15-20S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 15mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke15 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 MIJ40X15-20S
Dial in a precise forward end position on-site with the AirTAC MIJ40X15-20S, a round-body stainless mini cylinder featuring an adjustable extend stroke. An external stop screw shortens the forward travel by up to 20 mm, letting you fine-tune the setup without swapping hardware. Built as a double-acting unit, it pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa.
The stainless-steel barrel and Ø16 mm piston rod resist mild corrosion and washdown environments. Because this is a Ø40 bore, it uses a larger non-ISO-6432 body format with a 1/4" port and an M12x1.25 male rod thread. The -S suffix means a piston magnet is installed for CMSG, DMSG, or EMSG sensors.
Airtac MIJ Adjustable Cylinder MIJ40X15-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X15-20S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MIJ40X15-20S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | Stroke length in mm. |
| -20 | 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 MIJ40X15-20S Is Used
Heavy Clamping Stations
Apply up to 628.3 N of clamping force and use the 20 mm adjuster to dial in the exact material thickness without reprogramming the machine cycle.
Staged Diverting Gates
Handle larger product flows by adjusting the extend stop to shift the gate position on the fly, accommodating different package widths on the same line.
Pallet Stopper Arms
Halt heavier pallets reliably using the full Ø40 thrust, tweaking the stop screw to account for conveyor roller wear and tolerance stack-up.
Is the Airtac MIJ Adjustable Cylinder MIJ40X15-20S the Right Cylinder?
When sizing this unit against the range, stepping down to a Ø32 bore drops the 0.5 MPa push force to 402.2 N, while this Ø40 provides 628.3 N. There is no larger standard MIJ bore, so for loads exceeding 879.6 N at 0.7 MPa you would need a different cylinder family. The 20 mm adjustment window is ideal for taking up mechanical tolerances or staging feeds across multiple identical machines.
Mount this cylinder using LB foot, FA flange, or TC trunnion brackets; the SDB pivot block is not available on this adjustable variant. Fixed TPU bumper pads decelerate the stroke ends at speeds between 30 and 800 mm/s. Note that the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss, so add an external rod lock or pilot check valve if you need to hold a suspended load.
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 MIJ40X15-20S FAQ
This double-acting cylinder uses a 1/4" air port. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external stop screw shortens the extend stroke by up to 20 mm, setting the forward end position without affecting the full retract stroke. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG, or EMSG sensors. The screw is not a mid-stroke lock.
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.
Request a Quote for Airtac MIJ Adjustable Cylinder MIJ40X15-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.