This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X700, 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 SID50X700
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 700mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X700, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X700
- 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 SID50X700
The AirTAC SID50X700 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making the push and pull force equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This SKU has no -S magnet and cannot carry a sensor. It is discontinued, replaced by the SAID50X700 direct: same 50mm bore, 700mm stroke, G1/4 port, and mounting. The SAI upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure.
With equal force both ways, the back rod can drive a second tool or carry a sensor cam on a twin-setup. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID50X700 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X700 |
| Bore size | Ø50 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID50X700 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X700 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 SID50X700
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×700 | 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 SID50X700 Is Used
Dual-Station Conveyor Transfer
Uses the equal both-ways force to push and retract parts at two separate workstations simultaneously without stroke variation.
Symmetrical Machining Clamp
The twin rods provide inherent anti-rotation, holding a workpiece securely from both ends during milling or drilling.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X700 with the SAID50X700
To replace the discontinued SID50X700, use the SAID50X700 direct, keeping the ISO 15552 interface, G1/4 port, and 30mm adjustable cushions. Size both ways by checking neighbour bores if you need more or less equal force. Choose a double-rod when you need anti-rotation or to drive two tools. Reuse FA, LB, or TC mounts. This SKU lacks the -S magnet, so no sensors. For the 700mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X700
- ✓ 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 SID50X700 FAQ
Yes, the SID50X700 is discontinued. The direct replacement is the SAID50X700, which matches the 50mm bore, 700mm stroke, G1/4 port, and ISO 15552 mounting. The SAI family also adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The air port is G1/4. Air cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X700
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X700 replacement — usually within 7-8 hours.