This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X280, 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 SI200X280
The AirTAC Airtac SI200 Standard Cylinder SI200X280 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 280mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X280, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X280
- 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 SI200X280
The AirTAC SI200X280 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 280 mm stroke. It delivers 15708 N of push force at 0.5 MPa through a G3/4 port. Because this legacy unit is end-of-life, AirTAC specifies the SAI200X280 as the direct replacement, preserving the original ISO 15552 mounting interface, M36x2 rod thread, and output force.
The SAI upgrade introduces a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and extended life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates near stroke end—so consider the SAIL lock or an external pilot check valve. Since this SKU lacks a magnet, it cannot accept CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200X280 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X280 |
| Bore size | Ø200 mm |
| Stroke | 280 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 SAI200X280 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 SAI200X280 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 SI200X280
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SI200X280 Is Used
Heavy Stamping Press
Drives large platens in metal forming operations, utilizing the 15708 N push force at 0.5 MPa to deform thick steel blanks reliably.
Industrial Clamp Rig
Secures massive fabricated weldments during machining, taking advantage of the 15080 N pull force to hold components rigidly against tool vibration.
Replacing the Airtac SI200 Standard Cylinder SI200X280 with the SAI200X280
To replace the SI200X280, order the SAI200X280 direct equivalent, matching the 200 mm bore, 280 mm stroke, and ISO 15552 mounting interface. Confirm your port thread (PT/G/NPT) and mounting accessory (LB, FA, TC, etc.). Because this specific SKU has no magnet (-S), it cannot support position sensing; if switches are needed, specify a magnet-equipped SAI. For sizing alternatives, dropping to a 160 mm bore reduces the push force to 10053 N at 0.5 MPa, while increasing pressure to 0.7 MPa on the 200 mm bore yields 21991 N. At 280 mm stroke, side-load and rod-bending risks are moderate, so ensure rigid guidance to protect the 40 mm rod. For applications requiring load holding on air loss, select the SAIL or BSAI lock variant instead of relying on the cushion.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X280
- ✓ 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 SI200X280 FAQ
Yes, the SI200X280 is discontinued. The direct replacement is the AirTAC SAI200X280. It features the same ISO 15552 mounting interface, 200 mm bore, 280 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures without modification.
At 0.5 MPa, the push force is 15708 N and the pull force is 15080 N. At 0.7 MPa, the push force is 21991 N, and at 0.9 MPa it reaches 28274 N. The theoretical maximum force is 3204 kgf at 1.0 MPa. It operates at 30-500 mm/s, uses a G3/4 port, and has a 50 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X280 replacement — usually within 7-8 hours.