This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX135S, 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 SI200 Standard Cylinder SI200BX135S
The AirTAC SI200 Standard Cylinder SI200BX135S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 135mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX135S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke135 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX135S
- 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 SI200 Standard Cylinder SI200BX135S
The AirTAC SI200BX135S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 135mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200BX135S, matching the bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures. This 135mm stroke is nonstandard (standard increments skip 135).
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU includes a -B SUS304 stainless piston rod for corrosion resistance and an -S magnet for legacy CS1-B/DS1-B sensors. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot check valve for load holding.
Airtac SI200 Standard Cylinder SI200BX135S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX135S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX135S |
| Bore size | Ø200 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI200BX135S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200BX135S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200BX135S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×135 | 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 SI200 Standard Cylinder SI200BX135S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust ISO 15552 mounting.
Automated Welding Clamp
Holds large structural steel frames in welding fixtures, relying on the 50mm adjustable air cushions for smooth deceleration.
Replacing the Airtac SI200 Standard Cylinder SI200BX135S with the SAI200BX135S
To replace the SI200BX135S, order the SAI200BX135S. Verify your ISO 15552 mounting interface, 200mm bore, 135mm stroke, G3/4 port, and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches. The -B rod is SUS304 stainless steel. For sizing, neighbouring bores are 160mm and 125mm; at 0.5 MPa this 200mm bore yields 15708 N push and 15080 N pull. A plain cylinder does not hold load without live air; the cushion only decelerates. For secure holding, consider the SAIL or BSAI lock variants, or an external pilot check valve. Since the 135mm stroke exceeds 300mm? No, but being nonstandard, ensure strict guide alignment to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX135S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200BX135S FAQ
Yes, the SI200BX135S is discontinued. The direct replacement is the SAI200BX135S. It shares the same ISO 15552 mounting interface, 200mm bore, 135mm stroke, output force, G3/4 port, and accessories, fitting directly into existing fixtures.
The 200mm bore features a G3/4 air port and a 40mm piston rod. It delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical maximum force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX135S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX135S replacement — usually within 7-8 hours.