Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X300-30S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- 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 MICJ Adjustable Mini Cylinder MICJ40X300-30S
Dial in a precise forward stop on site with the AirTAC MICJ40X300-30S, a round-body stainless-steel mini cylinder that shortens the extend stroke by up to 30 mm via an external screw. The built-in magnet (-S) supports CMSG, DMSG, and EMSG sensors for exact position detection, while the 1/4" port feeds a robust Ø40 mm bore.
The stainless barrel and rod resist mild corrosion and washdown environments.
Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 MICJ Adjustable Mini Cylinder MICJ40X300-30S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MICJ Adjustable Mini Cylinder MICJ40X300-30S Is Used
Heavy Carton Diversion
Push heavy cartons at high speed on a packaging line, relying on the 30 mm extend adjustment to dial in the exact push distance and the dual air cushions to stop the 628.3 N stroke smoothly without slamming.
Pallet Load Stopping
Act as an end-of-line physical stop for pallets, using the external screw to fine-tune the 270-300 mm forward position while the stainless build handles mildly humid or washdown warehouse environments.
Vertical Material Lift
Raise and lower fixtures up to 32 kg, using the -S magnet and DMSG sensors to confirm top and bottom positions, while the adjustable needle cushions soak up the impact of the vertical drop.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30S the Right Cylinder?
There is no larger standard MICJ bore, so for loads exceeding 879.6 N at 0.7 MPa, consider a twin-rod setup or external pilot check valve. The 30 mm extend adjuster and dual air cushions are ideal for fast, settable-position moves requiring smooth deceleration.
Mount using LB foot, FA flange, or TC trunnion brackets, or choose CA, U, R, or CM back covers (SDB pivot-block is not available on this adjustable variant). Remember the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss. The -S magnet enables electronic or reed switches for immediate feedback.
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 MICJ Adjustable Mini Cylinder MICJ40X300-30S FAQ
This Ø40 mm bore cylinder uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 30 mm on site so you can set the exact forward end position without swapping cylinders; retract remains full. The variable air cushions at both ends use a needle valve to decelerate the piston at high speed. The -S magnet allows CMSG, DMSG, or EMSG sensors to track position.
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.
Related AirTAC MICJ Cylinders
Request a Quote for Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.