Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-50S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 JSIJ40X250-50S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend adjustability to your assembly line. The extruded hard-anodized aluminium barrel omits tie rods entirely, making the overall body shorter and more compact than a same-bore ISO 15552 unit. It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin.
The external stop screw provides a 50 mm shortening window, letting you fine-tune the usable extend stroke anywhere from 200 mm up to the 250 mm maximum without swapping the cylinder. A built-in piston magnet works with CMSE/DMSE switches that drop directly into the side grooves for position sensing. Air connections use a G1/4 port, and adjustable air cushions at both ends absorb the 20.5 mm impact zone to protect your mechanics.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-50S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 JSIJ40X250-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSIJ40X250-50S Is Used
Variable Stroke Clamping
Dial in the clamp contact point on the fly using the 50 mm adjuster window to compensate for varying part thicknesses without changing the fixture hardware.
Adjustable Transfer Stop
Set the exact pusher extension distance on-site to index different box widths down a packaging line, utilizing the full 250 mm nominal stroke as the upper limit.
Tiered Lift Pin
Lift components weighing up to 32 kg and fine-tune the raise height within the 200 to 250 mm range to clear varying shelf heights smoothly.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-50S the Right Cylinder?
When sizing this 40 mm bore, the neighbouring 32 mm bore yields 402 N of push at 0.5 MPa for lighter duties, while stepping up to the 50 mm bore provides 982 N for heavier tooling. The 50 mm extend adjustment window is especially useful when you need to share one spare cylinder across several stroke variants or dial in a final end position on the machine. JSIJ mounting options cover Basic, FA, LB, TC, TCM1, and TCM2. The -S suffix confirms the magnet is present for CMSE/DMSE sensors. For this 250 mm stroke, ensure you use a guide rail to prevent side-load wear on the 16 mm rod.
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 JSIJ40X250-50S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa it delivers 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 250 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 50 mm, giving a usable range of 200 to 250 mm. The retract end is fixed, and the adjuster only sets the end position; it does not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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