This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X25, 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 SID63X25
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X25
- 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 SID63X25
The AirTAC SID63X25 is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This geometry makes the push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The direct replacement is the SAID63X25, matching the 63mm bore, 25mm stroke, G3/8 port, and ISO 15552 mounting interface. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Because this SKU lacks the -S magnet, it cannot accept a magnetic switch. A plain cylinder does not hold loads on air loss; the 30mm adjustable cushions only decelerate near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID63X25 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X25 |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAID63X25 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 SAID63X25 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 SID63X25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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 SID63X25 Is Used
Synchronized Tool Driving
Drives two separate workstations simultaneously from one piston, utilizing the equal push and pull force of 1962 N @0.7 MPa on both rod ends for matched timing.
Anti-Rotation Transfer
Moves a parts gripper across a short 25mm transfer gap where the dual exiting rods prevent rotational drift without requiring external linear bearings.
Equal-Force Diverting
Diverts packages on a conveyor using a symmetrical pusher blade, where the identical 1402 N @0.5 MPa force in both directions ensures consistent retract and extend pressure.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X25 with the SAID63X25
To replace the discontinued SID63X25, install the direct replacement SAID63X25, reusing the existing ISO 15552 FA, LB, or TC mounts without machining. Size both ways by checking neighboring bores: the 50mm yields 825 N @0.5 MPa, while the 80mm yields 2268 N @0.5 MPa, ensuring your equal-both-ways force requirement is met. A double-rod design is right when you need anti-rotation stability or must drive two tools simultaneously. This non-magnetic SKU cannot take sensors; if tracking is needed, step up to an -S magnet model. For this 25mm stroke, side-load bending is negligible, but for any stroke >=300mm, ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X25
- ✓ 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 SID63X25 FAQ
Yes, the SID63X25 is discontinued. The direct replacement is the SAID63X25, offering the same ISO 15552 mounting interface, 63mm bore, 25mm stroke, G3/8 port, and equal both-ways force.
The G3/8 port feeds a double-acting double-rod design delivering equal force both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. It operates at 30-800 mm/s with 30mm adjustable cushions at each end.
Request a Quote for the SAID63X25
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X25 replacement — usually within 7-8 hours.