This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X60, 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.

The AirTAC Airtac SID Series Double-Rod Cylinder SID50X60 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X60, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID50X60 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are 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, G1/4 port, and 30 mm adjustable cushions. The SID line is discontinued; the direct replacement is the SAID50X60, reusing the same ISO 15552 mounting interface, bore, stroke, and force ratings.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. A double-rod design prevents rod rotation and can drive two tools simultaneously. Note this SKU lacks a -S magnet and cannot carry piston sensors; a plain cylinder drifts on air loss, so use an external rod lock for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID50X60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X60 |
| Bore size | Ø50 mm |
| Stroke | 60 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 SAID50X60 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X60 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×60 | 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).
Drives two opposing end-effectors from one piston, using the equal push and pull force to machine or form parts from both sides simultaneously.
The twin-rod geometry prevents mechanical twist during rapid diverting strokes on packaging lines, ensuring precise product routing without binding.
To replace the discontinued SID50X60, install the direct replacement SAID50X60, which matches the 60 mm stroke, 50 mm bore, G1/4 port, and ISO 15552 dimensions. Because force is equal both ways, size both push and pull by the same 825 N @0.5 MPa rating; if more force is needed, step up to the 63 mm bore, or drop to 40 mm for lighter loads. Choose a double-rod cylinder when you need anti-rotation stability or must drive two mechanisms. Mounting options include Basic, FA, LB, and TC. This non-magnetic SKU cannot take sensors; add the -S suffix on the SAI replacement if switch tracking is required. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
Yes, the SID50X60 is discontinued. The direct replacement is the SAID50X60. It shares the identical ISO 15552 mounting interface, 50 mm bore, 60 mm stroke, G1/4 port, and equal both-ways force, but adds an upgraded two-piece Y-shaped piston seal for longer life.
Being 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. It operates at 30-800 mm/s, uses a 20 mm rod with an M16x1.5 thread, and has 30 mm adjustable cushions at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X60 replacement — usually within 7-8 hours.