This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X190S, 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 SID Series Double-Rod Cylinder SID125X190S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X190S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 190mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X190S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke190 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X190S
- 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 SID Series Double-Rod Cylinder SID125X190S
The AirTAC SID125X190S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force both ways (5734N at 0.5MPa). It features a 125mm bore, M27x2 rod thread, G1/2 port, and 40mm adjustable cushions. The direct replacement is the SAID125X190S, which adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, the push and pull forces match exactly. This design prevents rod rotation and lets the back rod carry a sensor cam. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variant.
Airtac SID Series Double-Rod Cylinder SID125X190S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X190S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X190S |
| Bore size | Ø125 mm |
| Stroke | 190 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID125X190S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAID125X190S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID125X190S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×190 | 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 SID Series Double-Rod Cylinder SID125X190S Is Used
Dual-Tool Transfer
Drives two independent end-effectors simultaneously from a single piston, using the equal push and pull force to maintain synchronous part handling without adding a second cylinder.
Anti-Rotation Guiding
The dual-rod geometry prevents mechanical rotation during extension, providing stable linear guidance for precision measuring stations or machining heads that cannot tolerate torsional play.
Cam-Driven Sensing
Uses the rear protruding rod to actuate external limit switches or carry a sensor cam, freeing the primary front rod to perform work while maintaining accurate position feedback.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X190S with the SAID125X190S
To replace the SID125X190S, install the direct replacement SAID125X190S, reusing the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G1/2 port. When sizing both ways, verify the equal 5734N force at 0.5MPa is sufficient, or step to neighboring bores. Choose a double-rod cylinder when you need anti-rotation, dual-tool driving, or a back-rod sensor cam. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. For stroke lengths of 300mm or more, carefully manage side-load alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X190S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID125X190S FAQ
Yes, the SID125X190S is discontinued. The direct replacement is the SAID125X190S. It shares the same ISO 15552 interface, 125mm bore, 190mm stroke, G1/2 port, and mounting dimensions, but features an upgraded piston seal for longer life.
Because it is a double-rod cylinder, force is equal both ways: 5734N at 0.5MPa, 8028N at 0.7MPa, and 10321N at 0.9MPa. The air port is G1/2, the rod thread is M27x2, and speed ranges from 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X190S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X190S replacement — usually within 7-8 hours.