This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X800S, 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.

The AirTAC Airtac SID Series Double-Rod Cylinder SID63X800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X800S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID63X800S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, generating equal force in both directions at 1402 N (@0.5 MPa), 1962 N (@0.7 MPa), and 2523 N (@0.9 MPa). This 63mm bore, 800mm stroke model features a G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions. The SID line is discontinued; the direct replacement is the SAID63X800S, which reuses the same mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure.
Because both faces use the rod-side area, the dual rods prevent rotation and allow a rear rod to carry a sensor cam. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate the piston near stroke end; a plain cylinder cannot hold a load on air loss, so an external rod lock or SAIL/BSAI variant is required for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID63X800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X800S |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAID63X800S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X800S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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).
Equal both-ways force drives a conveyor pusher off the rear rod while the front rod handles part ejection, keeping the cycle balanced without requiring a larger bore.
The extended back rod carries a magnet for legacy CS1-B/DS1-B sensors, allowing position confirmation at both ends of the 800mm travel without external tracks.
To replace the discontinued SID63X800S, specify the SAID63X800S, which matches the 63mm bore, 800mm stroke, G3/8 port, and ISO 15552 mounting footprint. Size both directions by the equal force: 1402 N at 0.5 MPa, stepping to an 80mm bore (2268 N) if greater thrust is needed, or down to a 50mm bore (825 N) for lower loads. A double-rod design is selected when anti-rotation or a rear sensor cam is required, utilizing FA, LB, or TC mounts. The -S magnet supports legacy CS1-B/DS1-B switches. For this 800mm stroke, external guides must support side loads to prevent rod bending.
Replacement checklist
Yes, the SID63X800S is discontinued. The direct replacement is the SAID63X800S, which shares the exact ISO 15552 mounting interface, 63mm bore, 800mm stroke, G3/8 port, and equal both-ways force. The SAI upgrade also features a two-piece Y-shaped piston seal for longer life.
Force is equal both ways at 1402 N (@0.5 MPa), 1962 N (@0.7 MPa), and 2523 N (@0.9 MPa). Operating speed is 30-800 mm/s. The cylinder uses a G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions. It operates at 0.15-1.0 MPa with a 1.5 MPa proof pressure.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X800S replacement — usually within 7-8 hours.