Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B
The AirTAC Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B is a genuine double-acting COMPACT cylinder (Ø32mm bore) whose extend end-position is set by an external M10×1.25 adjustment screw. You can dial the stroke anywhere from 20 to 40 mm on the machine — no shims, no part change.
- BoreØ32 mm
- Max stroke40 mm
- Adjustable range20–40 mm
- Adjuster threadM10×1.25
- Port sizePT1/8
- CushionFixed NBR bumper (both ends)
- 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 SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B
The AirTAC SDAJ32X40-20B is a double-acting compact cylinder featuring an external extend stop. By turning the R (M10x1.25) adjuster screw, you can dial the forward end-position anywhere between 20 and 40 mm directly on the machine. Because the screw only sets the mechanical stop, the force remains identical to a standard SDA of this bore, delivering 402.1 N of push at 0.5 MPa.
This unit ships with a male M10x1.25 piston rod (option B) and a 12 mm rod diameter. The short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit. End shock is absorbed by a fixed NBR bumper, which decelerates the stroke end but is not an adjustable air cushion. Note this SKU lacks a piston magnet, so it cannot accept magnetic switches.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 40 mm |
| Adjustable range | 20 – 40 mm |
| Adjuster thread (R) | M10×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M6×1.0 F / M10×1.25 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 20 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
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 | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | Maximum stroke length in mm. |
| -20 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B Is Used
Tooling Changeover
Dial the extend stop from 20 to 40 mm during fixture swaps, hitting exact trial positions without machining new spacers.
Flap Folding Arms
Set the mechanical stop to push carton flaps accurately based on box thickness, relying on the 402.1 N output at 0.5 MPa.
Press Fit Tuning
Adjust the male M10x1.25 rod extension precisely for inserting dowel pins, preventing over-travel on delicate parts.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B the Right Cylinder?
When sizing this 32 mm bore, compare it both ways: stepping down to an SDAJ25 yields 245.4 N of push at 0.5 MPa, while stepping up to an SDAJ40 provides 628.3 N. This SDAJ32X40-20B delivers 402.1 N at 0.5 MPa, translating to a safe working load of roughly 241 N (about 60 percent of capacity) and a vertical lift capability near 20.5 kg with a 2:1 safety margin.
Choose this model if your application requires frequent on-machine stroke tuning during setup or changeovers. Confirm your parameters: 32 mm bore, 40 mm max stroke, 20 mm adjust window, PT1/8 port, male M10x1.25 rod thread, and no magnet. A plain cylinder does not hold its load on air loss or when the valve is centered—the piston drifts and the fixed bumper only decelerates near the end. For a held load, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 20–40 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the M10×1.25 adjuster after setting the stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-20B FAQ
At 0.5 MPa it provides 402.1 N push and 345.6 N pull. At 0.7 MPa it provides 563 N push and 483.8 N pull. The theoretical maximum push is 82 kgf at 1.0 MPa.
The R (M10x1.25) screw shortens the forward stroke by up to 20 mm, giving a usable extend range of 20 to 40 mm without altering force. This specific SKU has no piston magnet and cannot take a switch; the -S variant adds a magnet for reed or electronic sensors.
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Standard models are processed and dispatched in 3-5 business days.
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