This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X200, 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 SID40X200
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X200 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X200, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X200
- 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 SID40X200
The AirTAC SID40X200 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, 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 features a 40mm bore, 16mm rod, M12x1.25 thread, G1/4 port, and 27mm adjustable cushions. The direct replacement is the SAID40X200, reusing the same mounting interface, bore, and stroke. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life.
Because the second rod can carry a sensor cam or drive two tools simultaneously while resisting rotation, this architecture is highly versatile. As this SKU lacks a -S magnet, it cannot accept magnetic switches. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or the SAIL/BSAI lock variant.
Airtac SID Series Double-Rod Cylinder SID40X200 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X200 |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAID40X200 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 SAID40X200 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 SID40X200
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SID40X200 Is Used
Dual-Tool Machining Station
Drives two opposing machining heads with equal 528 N @0.5 MPa force on both strokes, ensuring perfectly synchronized material removal without rotational drift.
Symmetric Transfer Gate
Uses the dual-rod architecture to push and pull a transfer diverter with identical 739 N @0.7 MPa force, maintaining smooth bidirectional routing on the line.
External Cam Positioning
Leverages the rear extending rod to mechanically trigger external limit valves, providing rigid anti-rotation guidance for precision part placement.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X200 with the SAID40X200
To replace the discontinued SID40X200, install the direct replacement SAID40X200, which matches the ISO 15552 mounting interface, G1/4 port, and equal both-ways force. When sizing, verify that 528 N @0.5 MPa (or 739 N @0.7 MPa) meets your bidirectional load requirements; if more force is needed, step up to the 50mm bore, or drop to 32mm for lighter loads. Choose a double-rod cylinder when you need anti-rotation stability, dual-tool driving, or a back rod for a sensor cam. Mounting options include Basic, FA, LB, and TC. Since this SKU has no -S magnet, sensing is impossible. For stroke lengths of 300mm or greater, carefully manage side-load alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X200
- ✓ 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 SID40X200 FAQ
Yes, the SID40X200 is discontinued. The direct replacement is the SAID40X200, which shares the same ISO 15552 interface, 40mm bore, 200mm stroke, G1/4 port, and equal both-ways force. The SAI family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The G1/4 port delivers equal push and pull force on both rod sides: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The 16mm rod uses an M12x1.25 thread, speed is 30-800 mm/s, and adjustable cushions are 27mm at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X200
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X200 replacement — usually within 7-8 hours.