Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 250mm stroke, G1/2 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.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM26×1.5
- CushionAdjustable, 33 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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S
The external adjuster allows you to shorten the extend stroke on-site by up to 50 mm, meaning the usable extension range is 200-250 mm while the retract end remains fixed.
This specific SKU includes a built-in piston magnet for CMSE/DMSE switches that drop directly into the side grooves. Air connects via the G1/2 port, and adjustable air cushions of 33 mm at each end absorb kinetic energy near the stroke limits. The stop screw sets the end position but does not lock the load; you will need an external rod lock or pilot-operated check valve to hold a load securely against air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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, 33 mm |
| Max standard stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3525 N | 3525 N |
| 0.7 MPa | 4935 N | 4935 N |
| Max (@1.0 MPa) | 719 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | 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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S Is Used
Press Stroke Tuning
Dial in the exact 200 to 250 mm extend contact point on a light assembly press without machining new hard stops.
Variable Height Stops
Adjust the pusher extension on the fly to accommodate different pallet sizes while maintaining a fixed retract position.
Product Diverting
Set precise diverting fingers into a transfer line, tweaking the extend window by up to 50 mm to clear guide rails.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S the Right Cylinder?
The adjustable stroke shines when you need to fine-tune an end position on the machine without physically swapping cylinders, or when you want one shared spare across several stroke variants. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a 250 mm stroke unit, you should guide the load to prevent side-load wear on the rod and seals. The included -S magnet supports CMSE/DMSE sensors for position feedback.
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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-50S FAQ
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa it pushes 5497 N and pulls 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
The nominal 250 mm extend stroke is the maximum. The external adjuster lets you shorten the extend stroke on-site by up to 50 mm, giving a usable extension range of 200-250 mm. The retract end is fixed, and the adjuster only sets the end position rather than locking the load.
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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.
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Most inquiries answered within 7-8 hours.
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