This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ40X200-50SH, 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 SIJ40X200-50SH
The AirTAC SIJ40 Double Shaft Adjustable Cylinder SIJ40X200-50SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ40X200-50SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAIJ40X200-50SH
- 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 SIJ40X200-50SH
The AirTAC SIJ40X200-50SH is a double-acting, double-rod ISO 15552 adjustable-stroke cylinder featuring a 40 mm bore, 200 mm nominal stroke, and a 50 mm external stop screw window. This allows you to trim the extend stroke on-site down to 150 mm. The -H designation specifies a Viton/FKM seal for 0-150 C high-temperature environments, while the -S indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
This SIJ model is discontinued and the direct replacement is the SAIJ40X200-50SH, retaining the same interface, force, and adjustability. The SAIJ upgrade features an improved two Y-shaped one-way piston seal for lower start-up pressure and longer life. Remember the stop screw sets end position only; it is not a load lock.
Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X200-50SH Technical Specifications
| Model | Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X200-50SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ40X200-50SH |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAIJ40X200-50SH 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 SAIJ40X200-50SH 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 SIJ40X200-50SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SIJ40X200-50SH Is Used
Variable Depth Drilling
Trimming the extend stroke by up to 50 mm on-site allows a 40 mm bore actuator to accommodate varying material thicknesses on a machining fixture without swapping cylinders.
Adjustable Carton Sealing
A 150-200 mm extend window provides the precise end-position tuning required for sealing different carton heights, ensuring consistent clamp pressure at the end of travel.
Tunable Diverter Gate
Field-adjusting the extend stop lets operators fine-tune the gate extension distance on-site to route varying package widths accurately down a sorting line.
Replacing the Airtac SIJ40 Double Shaft Adjustable Cylinder SIJ40X200-50SH with the SAIJ40X200-50SH
To replace the discontinued SIJ40X200-50SH, order the SAIJ40X200-50SH directly—it is a direct swap retaining the 40 mm bore, 200 mm nominal stroke, 50 mm adjust window, G1/4 port, and ISO 15552 mounting. Choose the 50 mm adjust window if your extend stroke needs on-site tuning between 150 mm and 200 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S magnet supports legacy CS1-B/DS1-B sensors (current AirTAC switches are used on the SAIJ). For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ40X200-50SH
- ✓ 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 SIJ40X200-50SH FAQ
Yes, the SIJ40X200-50SH is discontinued. The direct replacement is the SAIJ40X200-50SH. It shares the same ISO 15552 interface, 40 mm bore, 200 mm stroke, 50 mm adjust window, G1/4 port, and mounting options, but utilizes an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 50 mm on-site, giving a usable extend range of 150-200 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ40X200-50SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ40X200-50SH replacement — usually within 7-8 hours.