This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X85S, 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 SID63X85S
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X85S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 85mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X85S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X85S
- 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 SID63X85S
The AirTAC SID63X85S is a double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Both faces use the rod-side area, so push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. This bore features a 20 mm rod, M16x1.5 thread, 30 mm adjustable cushions, G3/8 port, and 30-800 mm/s speed. The SID is discontinued and the direct replacement is the SAID63X85S.
The SAID63X85S retains the same ISO 15552 interface, bore, stroke, and mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2). The SAI replacement uses an upgraded two Y-shaped one-way piston seal for low start-up pressure and long life. The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID63X85S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X85S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X85S |
| Bore size | Ø63 mm |
| Stroke | 85 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 SAID63X85S 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 SAID63X85S 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 SID63X85S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×85 | 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 SID63X85S Is Used
Gripper Cam Actuation
Drives an external gripper cam where the rear rod simultaneously carries a sensor cam to confirm jaw position without adding external trackers.
Dual-Side Transfer Pusher
Pushes a workpiece from both ends simultaneously on a conveyor line, utilizing the equal both ways force to prevent part twisting.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X85S with the SAID63X85S
To replace the discontinued SID63X85S, specify the SAID63X85S, which is a direct upgrade matching the G3/8 port, 85 mm stroke, and 1402 N equal-both-ways force. When sizing both ways, verify if neighbour bores offer alternative force profiles, but the 63 mm bore provides symmetric push/pull force without single-rod pull reduction. Choose a double-rod cylinder when anti-rotation stability is required or when the back rod must drive a second tool or carry a sensor cam. Mounting options include FA, LB, and TC brackets. The -S magnet supports legacy CS1-B/DS1-B switches. A plain cylinder does not hold loads on air loss; use an external rod lock or the SAIL/BSAI lock variant for held loads, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X85S
- ✓ 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 SID63X85S FAQ
Yes, the SID63X85S is discontinued. The direct replacement is the SAID63X85S. It shares the same ISO 15552 interface, 63 mm bore, 85 mm stroke, G3/8 port, and equal both ways force, but uses an upgraded piston seal.
Force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. Speed is 30-800 mm/s. It features a 20 mm rod, M16x1.5 thread, and 30 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X85S replacement — usually within 7-8 hours.