This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X170S, 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 SID125X170S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X170S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 170mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X170S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X170S
- 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 SID125X170S
The AirTAC SID125X170S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This geometry means both faces use the rod-side area, making push and pull force equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. The direct replacement is the SAID125X170S, retaining the 125mm bore, 170mm stroke, G1/2 air port, M27x2 rod thread, and 40mm adjustable cushion at each end.
Because the second rod resists rotation and can carry a sensor cam, the design suits multi-tool drives. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for low start-up pressure. A plain cylinder drifts on air loss; cushions only decelerate, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID125X170S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X170S |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAID125X170S 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 SAID125X170S 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 SID125X170S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SID125X170S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously with equal both-ways force, utilizing the second rod for precise tool balancing.
Anti-Rotation Transfer Gate
The dual-rod architecture prevents mechanical twist during heavy product diversion on high-speed packaging lines.
Symmetric Lift Fixture
Lifts and lowers pallets with identical push and pull dynamics, carrying a sensor cam on the back rod for end-position verification.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X170S with the SAID125X170S
To replace the discontinued SID125X170S, install the direct replacement SAID125X170S, which matches the ISO 15552 mounting interface, bore, stroke, and G1/2 port. Size both ways by verifying the equal 5734 N @0.5 force is sufficient, or step to neighbour bores. A double rod is right when you need anti-rotation or two driven tools. Reuse FA, LB, or TC mounts. The -S suffix means a magnet is present for CS1-B/DS1-B switches. For this 170mm stroke side-load is minimal, but for stroke >=300mm ensure guide alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X170S
- ✓ 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 SID125X170S FAQ
Yes, the SID125X170S is discontinued. The direct replacement is the SAID125X170S. It shares the same ISO 15552 interface, 125mm bore, 170mm stroke, G1/2 port, and mounting, but adds an upgraded piston seal.
Force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. Speed is 30-500 mm/s. It features a 32mm rod, M27x2 thread, and 40mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X170S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X170S replacement — usually within 7-8 hours.