Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X400-20 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 JSIJ100X400-20
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.
The JSIJ100X400-20 features an external adjuster that fine-tunes the extend end position on-site without swapping the cylinder. The nominal 400 mm stroke is the maximum, and the -20 code means you can shorten the forward travel by up to 20 mm, giving a usable extend range of 380-400 mm while the retract end stays fixed. Pneumatic connections use a G1/2 port, and adjustable air cushions 33 mm long decelerate the load at both ends. This plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20 |
|---|---|
| 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 JSIJ100X400-20
| 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 JSIJ100X400-20 Is Used
Press Tonnage Trimming
Dial in the exact bottom position of a 100 mm bore pressing head on-site using the 20 mm adjuster window, avoiding cylinder swaps when material thickness varies.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20 the Right Cylinder?
The JSIJ mounting set includes Basic, FA, LB, TC, TCM1, and TCM2 options. The adjustable stroke is ideal for sharing a single spare across multiple stroke variants or dialling in exact end positions on-site. Because the 400 mm stroke is relatively long, always support the load with an external guide to prevent rod bending and excessive side loading. Note that this non-magnetic SKU cannot accept position sensors; choose an -S variant for CMSE/DMSE switches.
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 JSIJ100X400-20 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 maximum force is 801 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod with an M26x1.5 thread, and 33 mm adjustable cushions at both ends.
The 400 mm nominal stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke by up to 20 mm on-site, giving a usable range of 380-400 mm to fine-tune the end position. The retract end remains fixed. This mechanism only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load on air loss.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X400-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.