Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 JSIJ40X400-20S
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder features a built-in magnet and an on-site extend-stroke adjuster. Its extruded hard-anodized aluminum barrel is noticeably shorter and more compact than a same-bore ISO 15552 unit. The G1/4 port feeds the 16 mm rod, yielding a safe working load of about 377 N, which is roughly 32 kg lifted vertically with a 2:1 margin.
The external stop screw lets you trim the extend stroke by up to 20 mm, giving a usable range of 380-400 mm without changing the cylinder itself, while the retract end remains fixed. A -S suffix means the piston carries a magnet for CMSE/DMSE switches that mount directly into the side grooves. Note that the adjustable air cushions only decelerate the load near the ends; for true load holding on air loss, you must add an external rod lock or pilot-operated check valve.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 JSIJ40X400-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | 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 JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S Is Used
Sorter Diverter Tuning
Fine-tunes the 400 mm extend position by up to 20 mm on-site to perfectly align a package diverter arm without swapping cylinders.
Adjustable Stop Gate
Regulates carton flow on a gravity conveyor by trimming the extend stroke within the 380-400 mm window to accommodate varying box sizes.
Sensor Probe Placement
Uses the built-in magnet and CMSE switches to confirm position while adjusting the probe extend depth precisely for different material thicknesses.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S the Right Cylinder?
When sizing, the 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, whereas the 50 mm bore steps up to 982 N if this 40 mm class is too light. The JSIJ series supports Basic, FA, LB, TC, TCM1, and TCM2 mounts. The adjustable stroke is ideal for sharing one spare across slightly different stroke variants or fine-tuning the end position on-site. Because the 400 mm stroke is long, 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 JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S FAQ
This 40 mm bore cylinder uses a G1/4 port and a 16 mm rod. It generates 628 N push and 528 N pull at 0.5 MPa, 879 N push and 739 N pull at 0.7 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa.
The nominal 400 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable range of 380-400 mm. The retract end is fixed, and this stop sets position only, not a load lock.
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 JSIJ32~50 Adjustable Cylinder JSIJ40X400-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.