This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X700S, 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 SID40X700S
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 700mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X700S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X700S
- 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 SID40X700S
The AirTAC SID40X700S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. It features a 40mm bore, G1/4 air port, M12x1.25 rod thread, and a 700mm stroke. The direct replacement is the SAID40X700S, which retains the same mounting interface, force, and port size while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, the back rod can carry a sensor cam to drive two tools without robbing the primary working stroke. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; a plain cylinder does not hold loads on air loss, so an external rod lock or SAIL/BSAI variant is required for held loads.
Airtac SID Series Double-Rod Cylinder SID40X700S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X700S |
| Bore size | Ø40 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID40X700S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAID40X700S 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 SID40X700S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | 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 SID40X700S Is Used
Dual-End Transfer Pusher
Drives a transfer carriage on a conveyor using both rod ends to push and pull loads with equal 528 N force, ensuring stable bi-directional material handling.
Symmetrical Machining Fixture
Clamps a workpiece from opposite sides simultaneously. The double-rod anti-rotation property prevents torsional deflection during high-speed machining.
Vertical Lift Gate
Lifts a 27 kg gate using the computed vertical lift capacity at 0.5 MPa. The equal both-ways force provides consistent resistance during upward and downward travel.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X700S with the SAID40X700S
To replace the discontinued SID40X700S, install the direct replacement SAID40X700S, matching the 40mm bore, 700mm stroke, G1/4 port, and ISO 15552 mounting footprint. Size both ways by verifying the equal push/pull force of 528 N @0.5 MPa is sufficient, or step up to a 50mm bore if more force is needed. Choose a double-rod configuration when you need anti-rotation stability or must drive two tools simultaneously. Reuse existing FA, LB, or TC mounts. The -S magnet supports legacy CS1-B/DS1-B sensors. For this 700mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X700S
- ✓ 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 SID40X700S FAQ
Yes, the SID40X700S is discontinued. The direct replacement is the SAID40X700S, which shares the same ISO 15552 interface, 40mm bore, 700mm stroke, and G1/4 port. The SAI upgrade adds a two Y-shaped one-way piston seal for longer life and lower start-up pressure.
Because it is a double-rod cylinder, force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. Operating speed is 30-800 mm/s. Air cushions only decelerate the load; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X700S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X700S replacement — usually within 7-8 hours.