This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX200S, 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 SI63 Standard Cylinder SI63AX200S
The AirTAC SI63 Standard Cylinder SI63AX200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX200S
- 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 SI63 Standard Cylinder SI63AX200S
The AirTAC SI63AX200S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 200 mm stroke. It features a SUS420J2 stainless piston rod and a built-in magnet for CS1-B/DS1-B sensors. Generating 1559 N push at 0.5 MPa via its G3/8 port, its direct replacement is the SAI63AX200S.
The SAI upgrade retains identical ISO 15552 mounting, force, and porting, but adds an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. For load-holding, note the air cushion only decelerates; explore SAIL or BSAI lock variants.
Airtac SI63 Standard Cylinder SI63AX200S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX200S |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAI63AX200S 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 SAI63AX200S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63AX200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SI63 Standard Cylinder SI63AX200S Is Used
Clamp and Form Operations
Ideal for mid-range fixturing, delivering 1559 N of push force at 0.5 MPa to hold steel workpieces securely during machining or welding.
Package Diverting
Provides robust actuation for sorting gates and pushers on automated packaging lines, utilizing the 200 mm stroke to redirect heavy goods.
Replacing the Airtac SI63 Standard Cylinder SI63AX200S with the SAI63AX200S
To replace the SI63AX200S, order the SAI63AX200S. It drops into existing fixtures via the identical ISO 15552 interface, matching the 63 mm bore, 200 mm stroke, G3/8 port, M16x1.5 thread, and magnet. If sizing up or down, adjacent bores offer different force classes: a 50 mm bore yields 982 N push, while an 80 mm bore provides 2513 N at 0.5 MPa. Remember, a standard cylinder drifts without live air; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve. The SAI family also includes the SAIF integrated valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX200S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63AX200S FAQ
Yes, the SI63AX200S is discontinued. The direct replacement is the SAI63AX200S. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G3/8 port, and mounting hardware.
The bore is 63 mm with a G3/8 port. At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX200S replacement — usually within 7-8 hours.