This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X175, 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 SID50X175
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X175 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 175mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X175, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X175
- 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 SID50X175
The AirTAC SID50X175 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force in both directions (825 N at 0.5 MPa). This SKU has no -S magnet and cannot carry a sensor. It is discontinued; the direct replacement is the SAID50X175, retaining the G1/4 port, M16x1.5 rod thread, and 30 mm cushions.
The SAI upgrade features a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note that air cushions only decelerate; use an external rod lock for load holding.
Airtac SID Series Double-Rod Cylinder SID50X175 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X175 |
| Bore size | Ø50 mm |
| Stroke | 175 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID50X175 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X175 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 SID50X175
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SID50X175 Is Used
Synchronized Transfer
Drives opposing conveyor gates simultaneously with equal push and pull force, preventing material jamming during high-speed sorting.
Dual-Tool Machining
Powers two opposing machining heads from a single piston, ensuring perfectly mirrored part profiles without requiring a second cylinder.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X175 with the SAID50X175
To replace the discontinued SID50X175, install the SAID50X175 directly—it matches the ISO 15552 mounting interface, 50 mm bore, 175 mm stroke, and G1/4 port. Because force is equal both ways, verify your push and pull requirements against the 825 N (@0.5 MPa) rating; if more force is needed, step up to the 63 mm bore, or drop to 40 mm if less is required. Choose a double-rod design when you need anti-rotation stability or must drive two tools simultaneously. Reuse FA, LB, or TC mounts. As this SKU lacks the -S magnet, add external sensors if needed. For stroke lengths of 300 mm or greater, carefully manage side-load alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X175
- ✓ 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 SID50X175 FAQ
Yes, the SID50X175 is discontinued. The direct replacement is the SAID50X175, which shares the identical ISO 15552 interface, 175 mm stroke, G1/4 port, and mounting options.
Force is equal both ways: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at 0.9 MPa. Operating speed is 30-800 mm/s. The G1/4 port and 30 mm adjustable cushions govern these dynamics.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X175
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X175 replacement — usually within 7-8 hours.