This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X800, 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 SID125X800
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X800, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X800
- 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 SID125X800
The AirTAC SID125X800 is a discontinued double-acting double-rod ISO 15552 cylinder with an 800 mm stroke and 125 mm bore. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (5734 N at 0.5 MPa). It features a 32 mm piston rod, M27x2 rod-end thread, 40 mm adjustable air cushions, and a fixed G1/2 port. The direct replacement is the SAID125X800, which reuses the same ISO 15552 mounting interface, bore, stroke, and force ratings.
The SAID successor introduces an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. Because this SID SKU lacks the -S magnet option, it cannot accept legacy CS1-B/DS1-B switches. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID125X800 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X800 |
| Bore size | Ø125 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID125X800 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAID125X800 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 SID125X800
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SID125X800 Is Used
Dual-Station Conveyor Transfer
Uses the extended back rod to push a diverter on the return stroke while the front rod indexes parts forward, leveraging equal both-ways force for balanced cycling.
Anti-Rotation Machining Clamp
The twin-rod architecture prevents piston twist during high-vibration milling, maintaining precise clamping pressure without lateral drift.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X800 with the SAID125X800
To replace the discontinued SID125X800, install the direct replacement SAID125X800, which matches the G1/2 port, 1500 mm max standard stroke, and 30-500 mm/s speed. A double-rod design is right when you need equal both-ways force, anti-rotation stability, or a back rod to drive a second tool. If sizing both ways, neighbouring bores (100 mm or 160 mm) offer different equal-both-ways forces. Mounting options include Basic, FA, LB, and TC (no FB/CA/CB/CR). Choose the -S magnet version if sensor tracking is needed. For this 800 mm stroke, add external guides to prevent rod-bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X800
- ✓ 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 SID125X800 FAQ
Yes, the SID125X800 is discontinued. The direct replacement is the SAID125X800. It shares the same ISO 15552 mounting interface, 125 mm bore, 800 mm stroke, G1/2 port, and equal-both-ways force. The SAID family also adds upgraded piston seals and SAIL/BSAI lock variants.
Force is equal both ways: 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and 10321 N at 0.9 MPa. It operates at 30-500 mm/s, uses a G1/2 port, and has 40 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X800
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X800 replacement — usually within 7-8 hours.