This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-50TC, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X75-50TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X75-50TC
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC
The AirTAC SIJ100X75-50TC is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore and G1/2 port. An external stop screw lets you trim the extend stroke by up to 50mm on-site, giving a usable 25-75mm extension out of the 75mm nominal maximum. The stop sets the end position; it is not a load lock, as a plain cylinder drifts on air loss. The direct replacement is the SAIJ100X75-50TC, matching the TC mounting interface, bore, and force.
The SAIJ successor retains these ratings but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This SKU lacks a magnet (-S), so it cannot accept a reed switch; for load-holding, use an external rod lock or the SAIL/BSAI lock variant.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-50TC |
| Bore size | Ø100 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X75-50TC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X75-50TC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC Is Used
Press Fit Tuning
Pin insertion lines needing field stroke tuning to dial in exact 25-75mm extend depths for varying housing tolerances without swapping the actuator.
Divert Arm Adjustment
Pivoting TC-mounted divert arms where the extend stop is trimmed on-site to alter the resting position and clear different product widths on the fly.
Pallet Stop Positioning
Adjustable pallet stops at transfer stations allowing maintenance crews to shorten the extend stroke by up to 50mm to accommodate mixed pallet footprints.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC with the SAIJ100X75-50TC
To replace the discontinued SIJ100X75-50TC, specify SAIJ100X75-50TC for an exact ISO 15552 direct match on TC mount, G1/2 port, and 25-75mm adjustable stroke. Choose the 50mm adjust window when you need on-site end-position tuning without machining a fixed stop. The TC mount provides a trunnion interface for pivoting. Because this SKU has no -S magnet, it cannot take legacy CS1-B/DS1-B sensors; add external sensing if required. For strokes >=300mm, verify side-load tolerance to prevent rod binding. Remember the adjust screw sets end position but does not lock the load; for held loads, use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-50TC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50TC FAQ
Yes, the SIJ100X75-50TC is discontinued. The direct replacement is the SAIJ100X75-50TC. It shares the identical ISO 15552 interface, 100mm bore, 75mm nominal stroke, 50mm adjust window, TC mount, and G1/2 port. The SAIJ family also features an upgraded two-piece Y-shaped piston seal for longer life.
The external stop screw provides a 50mm adjust window, allowing you to trim the 75mm nominal extend stroke down to a 25mm effective stroke on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-50TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-50TC replacement — usually within 7-8 hours.