This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X175S, 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 SID125X175S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X175S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X175S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X175S
- 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 SID125X175S
The AirTAC SID125X175S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. It features a 125mm bore, M27x2 rod thread, 40mm adjustable air cushions, and a fixed G1/2 port. The direct replacement is the SAID125X175S, sharing the same interface, stroke, and mounting.
Because both faces use the rod-side area, the back rod can carry a sensor cam or drive two tools simultaneously with anti-rotation stability. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID125X175S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X175S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X175S |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAID125X175S 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 SAID125X175S 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 SID125X175S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | 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 SID125X175S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously, utilizing the equal both-ways force to ensure perfectly balanced cutting pressure on both sides of the workpiece.
Symmetrical Transfer Unit
Transfers pallets symmetrically from a central point using both extending rods, preventing chassis twisting and maintaining precise alignment without external guides.
External Cam Positioning
Uses the rear exiting rod to carry a sensor cam, triggering external legacy CS1-B/DS1-B switches to confirm stroke endpoints while the front rod performs the primary work.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X175S with the SAID125X175S
To replace the discontinued SID125X175S, specify the SAID125X175S direct: it matches the 125mm bore, 175mm stroke, G1/2 port, and ISO 15552 mounting. Size both ways by checking the equal push/pull force against your requirements, stepping to neighbouring bores if a higher or lower capacity is needed. A double rod is right when you need equal force in both directions, anti-rotation resistance, or a secondary rod to drive a second tool or sensor cam. Mounting options include Basic, FA, LB, and TC. The -S magnet enables position sensing. For strokes >=300mm, verify side-load limits to prevent guide wear. A plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X175S
- ✓ 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 SID125X175S FAQ
Yes, the AirTAC SID125X175S is discontinued. The direct replacement is the SAID125X175S, which shares the identical ISO 15552 mounting interface, 125mm bore, 175mm stroke, G1/2 port, and equal both-ways force. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants.
Because it is a double-rod cylinder, force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. The operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X175S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X175S replacement — usually within 7-8 hours.