This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X50SN, 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 SID63X50SN
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X50SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X50SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X50SN
- 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 SID63X50SN
The AirTAC SID63X50SN is a discontinued ISO 15552 double-acting double-rod cylinder where a rod exits both ends, making push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The direct replacement is the SAID63X50SN, retaining the 63mm bore, 50mm stroke, G3/8 port, and mounting interface. The SAI upgrade uses a two-piece Y-shaped piston seal for low start-up pressure and longer life.
Because both faces use the rod-side area, the unit delivers equal both-ways force and anti-rotation stability, allowing the back rod to carry a sensor cam. The -S magnet supports legacy CS1-B/DS1-B switches, while the -N NBR seal suits -20 to +70 C. Note: air cushions only decelerate; use an external rod lock for load holding.
Airtac SID Series Double-Rod Cylinder SID63X50SN Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X50SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X50SN |
| Bore size | Ø63 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID63X50SN carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X50SN 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 SID63X50SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SID63X50SN Is Used
Equal-Force Gripper Actuation
Drives opposing tooling where the equal both-ways 1962 N @0.7 MPa force is required to securely grip and release without varying pressure profiles.
Dual-End Transfer Pusher
Uses the second rod exiting the back end to carry a sensor cam, confirming stroke completion while pushing components between conveyor lanes.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X50SN with the SAID63X50SN
To replace the discontinued SID63X50SN, specify SAID63X50SN to reuse the existing ISO 15552 mounting (FA, LB, TC) and G3/8 port. Size both ways by checking neighbour bores: the 50mm yields 825 N @0.5 MPa, while the 80mm yields 2268 N @0.5 MPa. A double rod is right when you need equal both-ways force or anti-rotation stability. The -S magnet enables position sensing. For this 50mm stroke side-load is minimal, but for any stroke >=300mm, verify guide tolerance to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X50SN
- ✓ 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 SID63X50SN FAQ
Yes, the SID63X50SN is discontinued. The direct replacement is the SAID63X50SN, which matches the 63mm bore, 50mm stroke, G3/8 port, and ISO 15552 mounting. The SAI family also adds SAIL and BSAI lock variants the SI line lacked.
The G3/8 port feeds a double-acting double-rod design delivering equal both-ways force: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. A plain cylinder does not hold loads on air loss; cushions only decelerate, so use an external rod lock for holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X50SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X50SN replacement — usually within 7-8 hours.