This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X700, 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 SID40X700
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X700 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 SAID40X700, 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 → SAID40X700
- 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 SID40X700
The AirTAC SID40X700 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force of 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa. This model is discontinued. The direct replacement is the SAID40X700, matching the 40mm bore, 700mm stroke, G1/4 port, and 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 both faces use the rod-side area, force is identical in both directions. This non-magnetic SKU cannot accept a sensor. Note that air cushions only decelerate the piston near stroke end; for load holding on air loss, an external rod lock or pilot-operated check valve is required.
Airtac SID Series Double-Rod Cylinder SID40X700 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X700 |
| 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 SAID40X700 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 SAID40X700 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 SID40X700
| 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 SID40X700 Is Used
Synchronized Transfer
Drives two opposing conveyor arms simultaneously with equal both-ways force, ensuring perfectly timed material transfers without rotational drift.
Dual-Tool Machining
Mounts a secondary machining cam on the rear rod to operate a secondary station, utilizing the shared 528N force at 0.5MPa for both tools.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X700 with the SAID40X700
To replace the discontinued SID40X700, install the SAID40X700 directly into your existing ISO 15552 mounting using FA, LB, or TC brackets. The 40mm bore provides 528N equal both-ways force at 0.5MPa; if sizing up or down, check neighboring bores (32mm yields 345N, 50mm yields 825N) to match your bidirectional load. A double-rod design is correct when you need anti-rotation stability or must drive two tools simultaneously. This SKU lacks the -S magnet, so it cannot support legacy CS1-B/DS1-B sensors. For the 700mm stroke, use external guides to prevent rod bending and side-load damage. The SAIL or BSAI lock variant is recommended if you need held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X700
- ✓ 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 SID40X700 FAQ
Yes, the SID40X700 is discontinued. The direct replacement is the SAID40X700. It matches the ISO 15552 interface, 40mm bore, 700mm stroke, G1/4 port, and equal both-ways force. The SAI family also adds an upgraded piston seal and SAIL/BSAI lock variants the SI line lacked.
Force is equal both ways: 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa. It never quotes a larger single-rod push value. Speed is 30-800mm/s. The G1/4 port and 27mm adjustable cushion at each end manage deceleration, but the air cushion is not a lock and will not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X700
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X700 replacement — usually within 7-8 hours.