This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X250, 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 SID63X250
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X250
- 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 SID63X250
The AirTAC SID63X250 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. The bore dictates a G3/8 air port, a 20 mm rod, and M16x1.5 threads. This legacy model is discontinued; the direct replacement is the SAID63X250, matching the stroke, force, and mounting interface.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Because this SKU lacks the -S magnet, it cannot accept a reed switch. Note that air cushions only decelerate; use an external rod lock or SAIL/BSAI variant to hold loads.
Airtac SID Series Double-Rod Cylinder SID63X250 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X250 |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAID63X250 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 SAID63X250 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 SID63X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SID63X250 Is Used
Caliper Measuring Station
Drives a precision gauge from both ends to measure part dimensions, utilizing the equal push and pull force to maintain consistent measuring pressure without rotational drift.
Dual-Side Transfer Pusher
Employs the rear rod extension to mount a secondary cam or linkage, operating a diverter gate on a parallel conveyor line simultaneously with the main push action.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X250 with the SAID63X250
To replace the discontinued SID63X250, specify the SAID63X250, which reuses the exact ISO 15552 mounting footprint (Basic, FA, LB, TC) and G3/8 port. A double-rod design is chosen when you need equal force both ways or require a back rod to drive a second tool. If sizing up or down, check the 80 mm bore (2268 N) or 50 mm bore (825 N) for your equal-force requirements. For this 250 mm stroke, side-load alignment is critical. This non-magnetic SKU cannot support sensors; add the -S suffix on the SAID if switch tracking is required.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X250
- ✓ 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 SID63X250 FAQ
Yes, the SID63X250 is discontinued. The direct replacement is the SAID63X250, which shares the same 63 mm bore, 250 mm stroke, G3/8 port, and ISO 15552 mounting interface. The SAI family also upgrades the piston seal for longer life.
Because it is a double-rod cylinder, the push and pull forces are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore size sets the air port at G3/8. Note that cushions only decelerate; an external rod lock is required to hold loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X250
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X250 replacement — usually within 7-8 hours.