This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X200S, 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 SID40X200S
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X200S 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 SAID40X200S, 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 → SAID40X200S
- 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 SID40X200S
The AirTAC SID40X200S 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 model is discontinued; the direct replacement is the SAID40X200S, matching the 40mm bore, 200mm stroke, G1/4 port, and ISO 15552 mounting interface. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life.
With a 16mm rod and M12x1.25 thread, the rear rod can carry a sensor cam or drive two tools simultaneously while resisting rotation. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; cushions only decelerate, so use SAIL/BSAI or an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID40X200S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X200S |
| 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 SAID40X200S 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 SAID40X200S 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 SID40X200S
| 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 SID40X200S Is Used
Dual-Tool Machining Station
Uses both extending rods to drive opposing tools simultaneously, ensuring perfectly synchronized cutting cycles with equal push and pull force.
Anti-Rotation Transfer Gate
The twin-rod design prevents mechanical twist during rapid part diversion on the line, maintaining precise alignment without external guides.
External Cam Sensing Array
Leverages the rear exiting rod to physically trigger legacy CS1-B/DS1-B position switches in tight spaces where embedded slots are obstructed.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X200S with the SAID40X200S
To replace the discontinued SID40X200S, specify the SAID40X200S, which is a direct match for the ISO 15552 mounting interface and G1/4 port. Size both ways by confirming the 528 N @0.5 MPa equal force is sufficient; if more is needed, step up to the 50mm bore (825 N @0.5 MPa) or down to the 32mm bore (345 N @0.5 MPa). Choose a double-rod configuration when you need anti-rotation stability or a back rod to mount a sensor cam. Reuse existing FA, LB, or TC mounts. The -S magnet supports legacy CS1-B/DS1-B switches. For stroke lengths of 300mm or greater, verify side-load bearing limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X200S
- ✓ 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 SID40X200S FAQ
Yes, the SID40X200S is discontinued. The direct replacement is the SAID40X200S, which matches the 40mm bore, 200mm stroke, G1/4 port, and ISO 15552 mounting interface. The SAI family also adds upgraded seals and SAIL/BSAI lock variants.
Force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. Speed is 30-800 mm/s. Operating pressure is 0.15-1.0 MPa with a 27mm adjustable air cushion at each end. The cylinder does not hold loads on air loss; use an external rod lock for holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X200S replacement — usually within 7-8 hours.