This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X600STC, 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 SID125X600STC
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X600STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 600mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X600STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X600STC
- 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 SID125X600STC
The AirTAC SID125X600STC is a discontinued double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa and 10321 N @0.9 MPa. It features a 125mm bore, 32mm rod, M27x2 thread, 40mm cushion and G1/2 port. The direct replacement is SAID125X600STC.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure. The rear rod can carry a sensor cam, and the TC mount reuses ISO 15552 interfaces. The -S magnet works with legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID125X600STC Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X600STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X600STC |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAID125X600STC 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 SAID125X600STC 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 SID125X600STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SID125X600STC Is Used
Equal-Force Transfer
Drives a conveyor pusher where the return stroke must match the push force, utilizing the 5734 N @0.5 MPa output symmetrically.
Anti-Rotation Tooling
Powers a machining fixture requiring high resistance to rod twist during clamping, supported by the 32mm twin rods.
Dual-Sensor Cam Drive
Operates a multi-stage sorting gate where the rear rod carries a sensor cam for mid-stroke position feedback.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X600STC with the SAID125X600STC
To replace this discontinued model, use the SAID125X600STC direct, matching the 600mm stroke, 125mm bore, G1/2 port and TC mounting interface. Size both directions by checking equal force: if 8028 N @0.7 MPa is insufficient, step up to bore 160. A double rod is right when you need equal both-ways force, anti-rotation or a back rod to drive a sensor cam. The -S suffix provides a piston magnet. For the 600mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder does not hold loads on air loss; cushions only decelerate, so use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X600STC
- ✓ 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 SID125X600STC FAQ
Yes, the SID125X600STC is discontinued. The direct replacement is the SAID125X600STC, which shares the same ISO 15552 interface, 125mm bore, 600mm stroke, G1/2 port and TC mount.
Force is equal both ways at 5734 N @0.5 MPa, 8028 N @0.7 MPa and 10321 N @0.9 MPa. Speed is 30-500 mm/s. It uses a G1/2 port and 40mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X600STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X600STC replacement — usually within 7-8 hours.