This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X950S, 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 SID50X950S
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X950S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 950mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X950S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X950S
- 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 SID50X950S
The AirTAC SID50X950S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This 50 mm bore model features a 20 mm rod, M16x1.5 thread, 30 mm adjustable cushions, G1/4 port, and a 950 mm stroke. The SID line is discontinued; the direct replacement is the SAID50X950S, reusing the same ISO 15552 mounting interface and port size.
The SAID upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life, while the -S suffix on this unit provides a piston magnet for legacy CS1-B/DS1-B switches. Because both faces use the rod-side area, the back rod can carry a sensor cam or drive two tools simultaneously with anti-rotation benefits. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID50X950S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X950S |
| Bore size | Ø50 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID50X950S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X950S 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 SID50X950S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×950 | 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 SID50X950S Is Used
Equal-Force Transfer
Drives a conveyor pusher where the return stroke must move an equal load, utilizing the 825 N @0.5 MPa force in both directions.
Dual-Tool Machining
The extending back rod simultaneously operates a secondary clamp or gauge, leveraging the anti-rotation stability of the dual-rod layout.
Long-Stroke Sorting
Handles 950 mm diverter strokes in packaging lines, requiring external guides to manage side loads over the long travel distance.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X950S with the SAID50X950S
To replace the discontinued SID50X950S, install the direct replacement SAID50X950S, which matches the 50 mm bore, 950 mm stroke, G1/4 port, and ISO 15552 mounting dimensions (Basic, FA, LB, TC). Size both directions by confirming the equal both-ways force (825 N @0.5 MPa) handles your load; if more force is needed, step up to the 63 mm bore (1402 N @0.5 MPa), or drop to the 40 mm bore (528 N) for lighter duties. A double-rod design is right when you need equal push/pull force, anti-rotation stability, or a back rod for a sensor cam. The -S magnet supports legacy CS1-B/DS1-B switches. For this 950 mm stroke, external guides are required to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X950S
- ✓ 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 SID50X950S FAQ
Yes, the SID50X950S is discontinued. The direct replacement is the SAID50X950S, offering the same 50 mm bore, 950 mm stroke, G1/4 port, and ISO 15552 mounting interface. The SAI upgrade features a two-piece Y-shaped piston seal for longer life and lower start-up pressure.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it features 30 mm adjustable cushions at both ends. Air cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X950S replacement — usually within 7-8 hours.