Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 50mm stroke, G1/4 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ40 mm
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionAdjustable, 20.5 mm
- 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 JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder integrates an external adjuster that trims the extend stroke by up to 30 mm on-site. The hard-anodized aluminum extruded barrel leaves no external tie rods, yielding a build that is noticeably shorter and more compact than a same-bore ISO 15552 unit. Equipped with a G1/4 port and a 16 mm rod, it handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin.
Because the nominal 50 mm stroke represents the maximum extend length, you can fine-tune the end position down to a 20 mm usable stroke without swapping the actuator. The -S suffix denotes a built-in piston magnet for CMSE/DMSE switches that mount directly into the side barrel grooves. Remember that the adjustable stop screw sets the end position but does not lock the load; you will need an external pilot-operated check valve to hold a suspended weight securely on air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | Adjustable, 20.5 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S Is Used
Probe Depth Trimming
Dial in the extend stroke from 50 mm down to 20 mm on-site to set precise testing probe contact depth without machining custom spacers.
Variable Push Clamps
Adjust the extend endpoint by up to 30 mm to accommodate different workpiece widths in a single clamping station.
Short-Stroke Ejection
Fine-tune the ejection timing and position of small parts on a conveyor line using the built-in magnet for exact confirmation.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S the Right Cylinder?
When sizing this actuator, the 40 mm bore sits neatly between the lighter 32 mm option (402 N push at 0.5 MPa) and the heavier 50 mm class (982 N push at 0.5 MPa). The -30 mm adjustable window is highly useful for sharing a single spare across multiple stroke variants or dialing in a precise end position on the machine floor. You can mount it via basic, FA, LB, TC, TCM1, or TCM2 brackets. The integrated magnet supports CMSE/DMSE sensors for position confirmation. For any stroke length reaching 300 mm or beyond, always guide the load externally to prevent side-load damage to the rod seals.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-30S FAQ
This 40 mm bore cylinder uses a G1/4 port and generates 628 N push and 528 N pull at 0.5 MPa. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa.
The 50 mm nominal stroke is the maximum extend length. An external stop screw lets you shorten the extend stroke on-site by up to 30 mm, yielding a usable extend range of 20 to 50 mm. The retract end remains fixed, and this mechanism sets the end position rather than locking the load.
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