
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X1000-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 1000mm 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.
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for applications needing on-site end-position tuning. Its external stop screw lets you shorten the extend stroke by up to 50 mm, giving a usable range of 950-1000 mm while the retract end stays fixed. The hard-anodized aluminum barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit. A built-in magnet (-S) supports CMSE/DMSE sensors in the side grooves, and the G1/4 port handles standard 30-800 mm/s speeds.
For real-world sizing, plan for a safe working load around 377 N, which equates to lifting roughly 32 kg vertically with a 2:1 safety margin. At 1000 mm of stroke, external guides are strongly recommended to prevent rod bending and absorb side loads. Remember that the adjustable stop only sets the end position; it does not lock the load. If air pressure drops, the piston will drift, so add an external rod lock or pilot-operated check valve for holding requirements.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X1000-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 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).
| 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.
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1000 | 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.
Pushes packages across a wide conveyor belt, using the 50 mm adjuster to dial in the exact reach for varying product sizes without replacing the actuator.
Extends goods into deep storage racks, where the 950-1000 mm stroke range accommodates shelf depth variations and the compact JIS profile saves valuable machine footprint.
Secures oversized parts in a machining fixture, allowing operators to fine-tune the clamping endpoint on-site while relying on the 628 N thrust at 0.5 MPa.
When sizing this model, the 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. If your application needs less force, dropping to a 32 mm bore yields 402 N push, while stepping up to a 50 mm bore provides 982 N push for heavier cycles. The -50 mm adjustable window is highly useful when you need to fine-tune a long extend end-point without swapping the cylinder, or when consolidating spare parts across slightly different stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix means a magnet is already included for CMSE/DMSE switches. Because the stroke is 1000 mm, always pair this cylinder with an external linear guide to protect the 16 mm rod from bending under side loads.
Quick checklist
This 40 mm bore cylinder features a G1/4 air port and a 16 mm rod. It generates 628 N push and 528 N pull at 0.5 MPa, increasing to 879 N push and 739 N pull at 0.7 MPa. The theoretical maximum force is 128 kgf at 1.0 MPa.
The nominal 1000 mm stroke is the maximum length. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, providing a usable extend range of 950-1000 mm. The retract end remains fixed, and this mechanism only sets the end position; it does not hold the load pneumatically.
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