This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X800S, 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 SID40X800S
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 800mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X800S
- 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 SID40X800S
The AirTAC SID40X800S is a 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. This discontinued model uses a G1/4 port, M12x1.25 rod thread, and 27 mm adjustable cushions. The direct replacement is the SAID40X800S, matching the 40 mm bore, 800 mm stroke, and ISO 15552 mounting interface.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Because both faces use the rod-side area, the back rod can carry a sensor cam or drive two tools with anti-rotation stability. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID40X800S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X800S |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAID40X800S 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 SAID40X800S 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 SID40X800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SID40X800S Is Used
Dual-End Transfer Pusher
Drives a conveyor transfer carriage using both rod ends to push pallets sequentially without adding a secondary cylinder.
Symmetrical Clamping Fixture
Applies equal 528 N clamping force from opposing sides simultaneously, ensuring parts remain centred during machining.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X800S with the SAID40X800S
To replace the discontinued SID40X800S, specify the SAID40X800S, which offers a direct swap with identical ISO 15552 mounting, 800 mm stroke, and equal both-ways force. When sizing both ways, verify if the 739 N @0.7 MPa output fits your system, or evaluate neighbouring bores like the 32 mm or 50 mm if your payload changes. A double rod is right when you need equal push/pull forces, anti-rotation resistance, or a rear rod to drive a second tool. You can reuse FA, LB, or TC mounts. The -S magnet supports legacy CS1-B/DS1-B sensors. For this 800 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder does not hold loads on air loss; cushions only decelerate, so use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X800S
- ✓ 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 SID40X800S FAQ
Yes, the SID40X800S is discontinued. The direct replacement is the SAID40X800S, which matches the 40 mm bore, 800 mm stroke, G1/4 port, and ISO 15552 mounting interface.
Force is equal both ways at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. Speed is 30-800 mm/s. It operates at 0.15-1.0 MPa with 27 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X800S replacement — usually within 7-8 hours.