Airtac MIJ Adjustable Cylinder MIJ40X80-30S
The AirTAC MIJ Adjustable Cylinder MIJ40X80-30S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke80 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 MIJ40X80-30S
Dial in your forward end position on-site with the AirTAC MIJ40X80-30S, a round-body stainless mini cylinder featuring a 30 mm extend-stroke adjustment window. An external stop screw lets you trim the forward stroke down from the 80 mm nominal length, providing one part number to cover several intermediate stops without changing the actuator. Retract remains full stroke. Built with a stainless-steel barrel and Ø16 mm piston rod, it resists mild corrosion and washdown environments.
It uses a 1/4" port and fixed TPU bumper pads to decelerate the stroke end. Because this SKU includes the -S magnet, it supports CMSG, DMSG, and EMSG position switches.
Airtac MIJ Adjustable Cylinder MIJ40X80-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X80-30S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MIJ40X80-30S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MIJ40X80-30S Is Used
Heavy Clamping Fixtures
Secure heavy workpieces with up to 377 N of safe working force, using the 30 mm extend stop to dial in the exact clamp depth for varying part tolerances.
Staged Diverting Gates
Sort dense products on a line by adjusting the extend position on-site to deflect items of different sizes without swapping out the entire cylinder.
Box Forming Presses
Execute precise folding or sealing pressure on thick corrugated cartons, relying on the fixed TPU bumpers to soften the impact at the end of the stroke.
Is the Airtac MIJ Adjustable Cylinder MIJ40X80-30S the Right Cylinder?
If your application demands even more force, note that Ø40 is the largest available bore in this mini cylinder series. The 30 mm external stop screw is invaluable for taking up mechanical tolerances during setup or staging feeds, saving you from ordering custom strokes. Mount using LB foot, FA flange, or TC trunnion brackets (the SDB pivot-block is not offered on this adjustable variant). Remember that the stop screw sets the end position but does not function as 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 MIJ40X80-30S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external stop screw shortens the extend stroke by up to 30 mm on-site (retract remains full). The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG sensors. It features fixed TPU bumper pads, not an adjustable air cushion.
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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