This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X160S, 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 SID50X160S
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X160S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X160S
- 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 SID50X160S
The AirTAC SID50X160S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 825 N @0.5 MPa. This discontinued model features a 50mm bore, 160mm stroke, M16x1.5 rod thread, and a fixed G1/4 air port. The direct replacement is the SAID50X160S, retaining the same mounting interface and dimensions while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Because both faces use the identical rod-side area, force is equal both ways (825/1154/1484 N at 0.5/0.7/0.9 MPa). The second rod provides anti-rotation stability and can carry a sensor cam for the built-in magnet (-S for legacy CS1-B/DS1-B switches). Note that air cushions only decelerate near stroke end; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID50X160S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X160S |
| Bore size | Ø50 mm |
| Stroke | 160 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 SAID50X160S 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 SAID50X160S 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 SID50X160S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×160 | 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 SID50X160S Is Used
Gripper Synchronization
Drives opposing gripper jaws simultaneously via both rods, ensuring perfectly synchronized clamping force equal in both directions.
Transfer Pusher
Moves parts across a conveyor belt using the anti-rotation properties of the twin rods to prevent workpiece twisting during transit.
Dual-Station Feeder
Feeds two separate workstations concurrently, using the rear rod as a sensor cam to confirm stroke position while the front rod actuates.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X160S with the SAID50X160S
To replace the discontinued SID50X160S, install the direct replacement SAID50X160S, which matches the ISO 15552 mounting interface, 50mm bore, 160mm stroke, and G1/4 port. Size both ways by verifying the equal force fits your load, or step to neighbour bores (40mm or 63mm) if margins allow. A double rod is right when you need anti-rotation or a back rod to drive two tools. Reuse FA, LB, or TC mounts. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. For stroke >=300, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X160S
- ✓ 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 SID50X160S FAQ
Yes, the SID50X160S is discontinued. The direct replacement is the SAID50X160S, sharing the same ISO 15552 interface, 50mm bore, 160mm stroke, and G1/4 port. The SAI family also adds SAIL and BSAI lock variants the SI line lacked.
As 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. The fixed air port is G1/4, the rod is Ø20mm with an M16x1.5 thread, and speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X160S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X160S replacement — usually within 7-8 hours.