This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID32X50LB, 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 SID32X50LB
The AirTAC Airtac SID Series Double-Rod Cylinder SID32X50LB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID32X50LB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAID32X50LB
- 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 SID32X50LB
The AirTAC SID32X50LB is a discontinued ISO 15552 double-rod, double-acting cylinder where a rod exits both ends on one piston. This configuration means both faces use the rod-side area, making push and pull force equal at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The direct replacement is the SAID32X50LB, which matches the 32 mm bore, 50 mm stroke, G1/8 port, M10x1.25 rod thread, and LB mounting interface. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life.
Because the second rod resists torsional side-load deflection, it suits precision guiding tasks. This non-magnetic SKU cannot take a switch. A plain cylinder does not hold loads on air loss; the 27 mm adjustable cushions only decelerate near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID32X50LB Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID32X50LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID32X50LB |
| Bore size | Ø32 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID32X50LB carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAID32X50LB 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 SID32X50LB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 SID32X50LB Is Used
Synchronized Tool Driving
Drives two opposing tools simultaneously from one piston, utilizing the equal push and pull force of 483 N @0.7 MPa on both rod ends for balanced machining or clamping operations.
Anti-Rotation Guiding
The twin-rod architecture prevents torsional deflection during short-stroke positioning, maintaining precise alignment for gauging or thin-profile part handling without external linear bearings.
Transfer Pusher
Pushes workpieces along a conveyor using the 50 mm stroke, where the rear rod can mechanically trip a fixed limit switch to confirm stroke completion in non-magnetic environments.
Replacing the Airtac SID Series Double-Rod Cylinder SID32X50LB with the SAID32X50LB
Replace the SID32X50LB directly with the SAID32X50LB, reusing the existing ISO 15552 LB mounting and G1/8 porting. Size both ways by confirming the 345 N @0.5 MPa equal force is sufficient; if more push/pull is needed, step up to the 40 mm bore (528 N @0.5 MPa) rather than assuming a larger single-rod push. Choose a double-rod cylinder when you need anti-rotation stability or need to drive a sensor cam on the back rod. This SKU lacks the -S magnet, so it cannot support legacy CS1-B/DS1-B sensors. For stroke lengths >=300 mm, verify the side-load line to prevent guide bushing wear. For load-holding without live air, select an external pilot-operated check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID32X50LB
- ✓ 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 SID32X50LB FAQ
Yes, the SID32X50LB is discontinued. The direct replacement is the SAID32X50LB. It shares the same ISO 15552 interface, 32 mm bore, 50 mm stroke, G1/8 port, and LB mount, but adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Force is equal both ways (push and pull) because both piston faces have the rod-side area: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID32X50LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAID32X50LB replacement — usually within 7-8 hours.