Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 300mm stroke, G1/4 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.
- BoreØ40 mm
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionAdjustable, 20.5 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 JSIJ32~50 Adjustable Cylinder JSIJ40X300-100
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built with an extruded hard-anodized aluminum barrel that makes it shorter and more compact than a same-bore ISO 15552 unit. It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. The G1/4 port and M14x1.5 rod thread keep pneumatic and mounting connections straightforward.
The -100 code means an external adjuster lets you shorten the extend stroke on-site by up to 100 mm, giving a usable extend range of 200-300 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder, and the 20.5 mm adjustable air cushions at both ends decelerate the piston smoothly. Note that this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | 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 JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 Is Used
Adjustable Stop Clamping
Dial in the exact 200-300 mm extend position for clamping parts of varying widths on a machining line without changing the physical cylinder mount.
Variable Length Diverter
Fine-tune the pusher stroke on-site to deflect different package sizes off a conveyor, using the 100 mm external adjuster window to match product dimensions.
Multi-Height Lift Stop
Set precise lower stopping points for a light 32 kg vertical lift rig, adjusting the extend end position on the fly to handle varied shelf heights.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 the Right Cylinder?
When sizing this 40 mm bore, the neighbouring 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore steps up to 982 N if you need more power. The adjustable stroke is ideal for sharing one spare across multiple stroke variants or dialling in an exact end position on-site. JSIJ mounting choices include Basic, FA, LB, TC, TCM1 and TCM2. Because the 300 mm stroke is relatively long, use an external guide to prevent rod bending and side loads. A plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a load.
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 JSIJ32~50 Adjustable Cylinder JSIJ40X300-100 FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical max force is 128 kgf at 1.0 MPa. It uses a G1/4 air port, a 16 mm rod, an M14x1.5 rod thread, and 20.5 mm adjustable cushions at both ends.
The 300 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke on-site by up to 100 mm, yielding a usable extend range of 200-300 mm. The retract end is fixed. This stop sets the end position but does not lock the load, as the cushion only decelerates the piston.
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