This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X85-20S, 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 SIJ100X85-20S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X85-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 85mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X85-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X85-20S
- 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 SIJ100X85-20S
The AirTAC SIJ100X85-20S is a discontinued double-acting, double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable stroke range of 65-85 mm. The 100 mm bore features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, a G1/2 port, and speeds of 30-800 mm/s.
The direct replacement is the SAIJ100X85-20S, reusing your ISO 15552 mounting and porting. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note the stop screw sets end position but is not a load lock; use SAIL or BSAI variants for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X85-20S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X85-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X85-20S |
| Bore size | Ø100 mm |
| Stroke | 85 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 SAIJ100X85-20S 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 SAIJ100X85-20S 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 SIJ100X85-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×85 | 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 SIJ100X85-20S Is Used
Press Fit Tuning
Adjusts the extend end-position by up to 20 mm on-site to set precise insert depths without machining new hard stops.
Diverter Gate Stroke
Trims the 85 mm extend stroke to match varying package widths on the fly, ensuring the diverter meets the exact edge.
Pallet Stop Positioning
Fine-tunes the stop screw to alter the extend stroke window for mixed pallet sizes, providing flexible end-point control.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X85-20S with the SAIJ100X85-20S
To replace the discontinued SIJ100X85-20S, order the SAIJ100X85-20S direct, keeping the 85 mm nominal stroke and 20 mm adjust window. Retain FA, LB, or TC mounts via the ISO 15552 interface. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). For strokes of 300 mm or more, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X85-20S
- ✓ 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 SIJ100X85-20S FAQ
Yes, the SIJ100X85-20S is discontinued. The direct replacement is the SAIJ100X85-20S, offering the same ISO 15552 interface, 85 mm stroke, 20 mm adjust window, and G1/2 port. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 20 mm, allowing the extend stroke to be shortened from 85 mm down to 65 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X85-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X85-20S replacement — usually within 7-8 hours.