This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X100H, 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 SID125X100H
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X100H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X100H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X100H
- 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 SID125X100H
The AirTAC SID125X100H is a discontinued double-acting double-rod ISO 15552 cylinder featuring a 125mm bore and 100mm stroke. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (5734N at 0.5MPa). The direct replacement is the SAID125X100H, sharing the same G1/2 port, M27x2 rod thread, and mounting interface. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This -H variant specifies Viton/FKM seals for 0-150C high-temperature environments.
Because the rod exits both ends, the back rod can carry a sensor cam or drive two tools simultaneously while resisting rotation. As this SKU lacks the -S suffix, it has no magnet and cannot take a magnetic switch. Note that a plain cylinder does not hold loads on air loss; the 40mm adjustable cushions only decelerate near stroke end.
Airtac SID Series Double-Rod Cylinder SID125X100H Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X100H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X100H |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAID125X100H 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 SAID125X100H 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 SID125X100H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SID125X100H Is Used
Dual-Station Machining
Drives two opposing machining heads simultaneously from a single 125mm piston, utilising the equal both-ways force to ensure balanced clamping across a central workpiece.
High-Temp Transfer
Indexes heavy components through a 150C drying oven, leveraging the Viton H seals and anti-rotation stability of the twin-rod design for precise positioning.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X100H with the SAID125X100H
To replace the discontinued SID125X100H, specify the SAID125X100H, which is a direct upgrade retaining the ISO 15552 interface, 125mm bore, 100mm stroke, and G1/2 port. When sizing both ways, verify the equal force of 5734N at 0.5MPa is sufficient; if not, evaluate the neighbouring 160mm bore. A double rod is right when you need anti-rotation stability or want to drive two tools from one piston. Mounting options include Basic, FA, LB, and TC styles. For stroke lengths of 300mm or greater, carefully manage side-load alignment to prevent premature seal wear. Because this is a non-magnetic SKU, position sensing is impossible. For load-holding on air loss, do not rely on the cushions; specify an external rod lock or pilot-operated check valve, or transition to the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X100H
- ✓ 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 SID125X100H FAQ
Yes, the SID125X100H is discontinued. The direct replacement is the SAID125X100H. It shares the identical ISO 15552 mounting interface, 125mm bore, 100mm stroke, G1/2 port, and equal both-ways force, while adding an upgraded two Y-shaped one-way piston seal.
Force is equal both ways at 5734N @0.5MPa, 8028N @0.7MPa, and 10321N @0.9MPa. Operating pressure is 0.15-1.0MPa. Speed is 30-500mm/s. The G1/2 port and 40mm adjustable cushions manage deceleration, but cushions do not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X100H
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X100H replacement — usually within 7-8 hours.