Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20S
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X400-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 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 JSIJ100X400-20S
The extruded hard-anodized aluminium body omits exposed rods, making it shorter and more compact than a same-bore ISO 15552 unit. A G1/2 port handles the air supply, while the 32 mm rod and M26x1.5 thread manage high thrust.
The external adjuster allows you to shorten the extend stroke on-site by up to 20 mm, giving a usable range of 380-400 mm without changing the cylinder itself. This on-site fine-tuning is ideal for dialing in exact end positions. The -S suffix means a built-in magnet is present for CMSE/DMSE sensors in the side grooves. Note that the air cushion only decelerates; an external rod lock is needed to hold a load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 JSIJ100X400-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×400 | 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 JSIJ100X400-20S Is Used
Press Fit Tuning
Fine-tune the 380-400 mm extend position on-site by up to 20 mm to set precise insertion depth for heavy bearing press fits without swapping cylinders.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20S the Right Cylinder?
This 100 mm model is ideal for medium-to-heavy tasks. The 20 mm adjustable window lets you share one spare across stroke variants and fine-tune the end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S magnet supports CMSE/DMSE switches. Because the stroke is 400 mm, always use an external guide to prevent rod bending and side-load damage.
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 JSIJ100X400-20S 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. The air port size is G1/2.
The nominal stroke is 400 mm, which is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 380-400 mm. The retract end is fixed. This stop sets the end position but is not a load lock.
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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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