Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-20
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X300-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 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 JSIJ100X300-20
The hard-anodized aluminum barrel keeps the assembly light while handling serious work. The G1/2 port feeds the chamber efficiently to maintain smooth motion across the 30-800 mm/s speed range.
The JSIJ100X300-20 uses an external adjuster to shorten the extend stroke on site by up to 20 mm, giving a usable forward travel of 280-300 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. This SKU lacks a magnet and cannot take a CMSE or DMSE sensor. Note that the air cushion only decelerates the piston near the ends; it will not hold a load on air loss, so use an external rod lock for vertical safety.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 JSIJ100X300-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSIJ100X300-20 Is Used
Press Fit Tuning
Dial in the exact 280-300 mm extend position for seating bearings without remounting the actuator.
Divertor Adjustment
Fine-tune the extend reach on a transfer line to accommodate different product widths on the fly.
Pallet Stop Gate
Set the precise stop height for 200 kg vertical lift loads using the external adjuster screw.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-20 the Right Cylinder?
When sizing this 100 mm bore, stepping down to an 80 mm unit drops the 0.5 MPa push force to 2513 N, while stepping up to 125 mm raises it to 6136 N. The adjustable 280-300 mm extend window is ideal for tuning end positions on site or sharing a spare across stroke variants. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because the 300 mm stroke creates leverage, use external guides to prevent rod bending and side-load wear. Choose the -S variant if you need CMSE or DMSE sensors, as this plain SKU cannot accept them.
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 JSIJ100X300-20 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 max is 801 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod, and M26x1.5 rod threads.
The nominal 300 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke on site by up to 20 mm, giving a usable range of 280-300 mm. The retract end is fixed, and this stop sets position only, not a load lock.
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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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