This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ40X160-50S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S
The AirTAC SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ40X160-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAIJ40X160-50S
- 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 SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S
The AirTAC SIJ40X160-50S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the SAIJ40X160-50S. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 110-160 mm window from the 160 mm nominal maximum.
The direct replacement SAIJ40X160-50S retains the exact ISO 15552 mounting interface, force, and adjust window, but upgrades to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets end position only; it is not a load lock.
Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S Technical Specifications
| Model | Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ40X160-50S |
| Bore size | Ø40 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ40X160-50S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
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 | |
The SAIJ40X160-50S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S Is Used
Variable Pitch Tooling
Tuning the extend stroke on-site by up to 50 mm allows a single 40 mm bore actuator to adapt to multiple part heights without changing the entire cylinder body.
Adjustable Transfer Stops
Field-trimming the extend stroke lets operators reposition a stop finger precisely for changing package widths on a packaging line.
Dynamic Clamping Fixtures
The 110-160 mm usable stroke window provides flexibility to clamp varying workpiece sizes while maintaining the 528 N pull force at 0.5 MPa.
Replacing the Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S with the SAIJ40X160-50S
To replace the discontinued SIJ40X160-50S, order the direct replacement SAIJ40X160-50S, which preserves the 50 mm adjust window, 160 mm max stroke, and G1/4 port. Choose the 50 mm adjust window if your fixture tuning requires a wide 110-160 mm extend range. Mounting reuse is seamless across Basic, FA, LB, and TC brackets. The -S magnet enables position sensing; for stroke lengths >=300 mm, verify guide alignment to prevent side-load wear. The stop screw sets end position only; for load holding on air loss, use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ40X160-50S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X160-50S FAQ
Yes, the SIJ40X160-50S is discontinued. The direct replacement is the SAIJ40X160-50S, which shares the same ISO 15552 interface, 40 mm bore, 160 mm stroke, 50 mm adjust window, and G1/4 port.
The external stop screw shortens the extend stroke by up to 50 mm on-site, yielding a 110-160 mm usable window. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ40X160-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ40X160-50S replacement — usually within 7-8 hours.