This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X350STC, 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 SID63X350STC
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X350STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X350STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X350STC
- 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 SID63X350STC
The AirTAC SID63X350STC is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force of 1402 N at 0.5 MPa. This bore features a 20 mm rod, M16x1.5 thread, 30 mm adjustable cushions, and a G3/8 port. The SID line is discontinued; the direct replacement is the SAID63X350STC, reusing the same ISO 15552 mounting interface, TC bracket, and stroke.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. The rear rod can carry a sensor cam to prevent rotation, and the -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate; use an external rod lock for load holding.
Airtac SID Series Double-Rod Cylinder SID63X350STC Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X350STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X350STC |
| Bore size | Ø63 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID63X350STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X350STC 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 SID63X350STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×350 | 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 SID63X350STC Is Used
Synchronized Tool Driving
Drives two separate work tools from opposite rod ends simultaneously, ensuring perfectly synchronized motion without requiring a second cylinder.
Anti-Rotation Lifting
Lifts and lowers vertical loads where rotational stability is critical, using the dual-rod geometry to prevent the payload from twisting during transit.
Transfer Pushers
Positions parts on a conveyor line using the TC mount, where the equal push and pull force of 1402 N at 0.5 MPa securely shuffles goods without drift.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X350STC with the SAID63X350STC
To replace the discontinued SID63X350STC, install the SAID63X350STC directly into your existing ISO 15552 TC mount. Sizing requires checking equal both-ways force: this 63 mm bore delivers 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. If you need less force, step down to a 50 mm bore; if you need more, step up to an 80 mm bore. A double rod is correct when you need anti-rotation stability or want to drive two tools simultaneously. The -S suffix means the magnet is present for sensors. Because the stroke is 350 mm, ensure external guides support side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X350STC
- ✓ 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 SID63X350STC FAQ
Yes, the SID63X350STC is discontinued. The direct replacement is the SAID63X350STC, which shares the same 63 mm bore, 350 mm stroke, G3/8 port, TC mounting, and ISO 15552 interface.
Force is equal both ways due to the double-rod design: 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at 0.9 MPa. Operating speed is 30-800 mm/s. It uses a G3/8 port and 30 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X350STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X350STC replacement — usually within 7-8 hours.