Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-75
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X250-75 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 JSIJ100X250-75
The hard-anodized aluminum extruded barrel skips external rods for a clean profile. A G1/2 port handles the air supply, while a 32 mm rod and M26x1.5 thread manage the load.
The -75 code means an external stop screw lets you shorten the extend stroke on-site by up to 75 mm, giving a usable forward range of 175 to 250 mm without swapping the cylinder. The retract end remains fixed, and the 33 mm adjustable air cushions at both ends only decelerate the piston near stroke end.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-75 |
|---|---|
| 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 JSIJ100X250-75
| 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 JSIJ100X250-75 Is Used
Press Stroke Tuning
Dial in the exact 175 to 250 mm clamping reach on a multi-product assembly press using the external adjuster without changing the cylinder body.
Variable Height Lowering
Lower heavy platens up to 200 kg with a controlled vertical descent, tweaking the final lowered position on-site to suit different material thicknesses.
Shared Spare Inventory
Keep one cylinder in maintenance stock and adjust the extend stop down by 75 mm to service several machines with slightly different maximum stroke needs.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-75 the Right Cylinder?
The adjustable stroke is ideal when you need to fine-tune an end position on the machine or want a single spare cylinder to cover several stroke variants. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because this SKU lacks the -S suffix, it cannot accept a magnetic sensor; add the -S variant for CMSE or DMSE switches. For any stroke over 300 mm, always use a guide rail to prevent 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 JSIJ100X250-75 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 is 801 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod, and adjustable cushions of 33 mm at each end.
The nominal 250 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable forward range of 175 to 250 mm. The retract end is fixed. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve if you need to hold a 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.
Fast Reply
Most inquiries answered within 7-8 hours.
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