Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X25-20
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X25-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 25mm 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
- Stroke25 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 JSIJ100X25-20
Its extruded hard-anodized aluminium barrel keeps the overall length shorter than a same-bore ISO 15552 unit. The G1/2 port feeds the chamber efficiently to maintain smooth motion across the 30-800 mm/s speed range.
An external adjuster allows you to shorten the 25 mm extend stroke on-site by up to 20 mm, yielding a usable extend range of 5-25 mm without swapping the cylinder. This on-site tuning is perfect for dialing in precise end positions. Note that this SKU lacks a magnet, so it cannot take CMSE/DMSE sensors.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X25-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X25-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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 JSIJ100X25-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSIJ100X25-20 Is Used
Short-Stroke Pressing
Dials in precise 5 to 25 mm pressing actions for bearing insertion, using the external adjuster to set exact end positions without remounting hardware.
Transfer Stopper Gate
Acts as a heavy-duty stop gate on a conveyor line, retracting just enough to pass product by trimming the extend stroke down 20 mm on-site.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X25-20 the Right Cylinder?
When sizing this unit, stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while moving up to a 125 mm bore increases it to 6136 N. The adjustable stroke window is highly useful when you need to share a common spare across slightly different stroke variants or fine-tune a machine setup on the floor. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a non-magnetized model, you cannot mount position sensors. For any stroke length over 300 mm, always use a guide rail to prevent side-load damage to the 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 JSIJ100~125 Adjustable Cylinder JSIJ100X25-20 FAQ
The theoretical maximum force is 801 kgf at 1.0 MPa. It features a 32 mm rod, an M26x1.5 rod thread, a G1/2 port, and 33 mm adjustable air cushions at both ends.
The nominal extend stroke is 25 mm maximum. The external adjuster lets you shorten that extend stroke on-site by up to 20 mm, giving a usable range of 5 to 25 mm. The retract end is fixed. This mechanism only sets the end position and decelerates the piston; it does not hold the load on air loss, so use an external rod lock for holding.
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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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