Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X80-40B
The AirTAC Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X80-40B is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 40 to 80 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke80 mm
- Adjustable range40–80 mm
- Adjuster threadM12×1.25
- 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 SDAJ40X80-40B
The AirTAC SDAJ40X80-40B is a compact double-acting single-rod cylinder featuring an external extend stop. An M12x1.25 adjuster screw lets you dial the forward end-position anywhere between 40 and 80 mm directly on the machine, eliminating the need for shims or part swaps. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering about 628.3 N of push at 0.5 MPa.
This variant features a male M14x1.5 piston rod thread and a PT1/8 air port. The short riveted body significantly reduces axial mounting depth where a larger profile cylinder would not fit. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Note that this specific SKU lacks a piston magnet, so it cannot support position sensing without upgrading to the -S variant.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X80-40B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X80-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 80 mm |
| Adjustable range | 40 – 80 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 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 40 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SDAJ40X80-40B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Maximum stroke length in mm. |
| -40 | 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 SDAJ40X80-40B Is Used
Machining Clamp Depth
Dial the M12x1.25 screw to set the extend stop between 40 and 80 mm, ensuring a 628.3 N clamping force at 0.5 MPa without over-traveling into the workpiece.
Package Diverter Arms
Adjust the male M14x1.5 rod extension on the fly to accommodate varying carton widths on a packaging line, relying on the fixed NBR bumper to absorb the stop shock.
Vertical Lift Stops
Lift up to 32 kg with a 2:1 safety margin and fine-tune the drop height within the 40 mm window, though an external check valve is required to hold the load if air pressure drops.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X80-40B the Right Cylinder?
When sizing this unit, evaluate both neighboring bores: the SDAJ32 provides 402.1 N of push at 0.5 MPa, while the SDAJ50 offers 981.7 N. The 40 mm bore here strikes a middle ground, yielding a safe working load of roughly 377 N (about 60 percent of its 628.3 N capacity) and a vertical lift capability near 32 kg with a 2:1 safety margin. Choose this specific model if your fixture requires frequent on-site stroke tuning during changeovers.
Confirm your parameters require a 40 mm bore, an 80 mm maximum stroke, and a 40 mm adjustment window. This unit includes the -B option for a male M14x1.5 rod thread and uses a PT1/8 port. Because it lacks the -S magnet, you cannot mount reed or electronic switches. Remember that a standard cylinder drifts when air is lost or a valve centers; the fixed NBR bumper only decelerates the stroke end and does not function as a lock. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 40–80 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 M12×1.25 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 SDAJ40X80-40B FAQ
At 0.5 MPa this 40 mm bore cylinder provides 628.3 N of push and 527.8 N of pull. At 0.7 MPa it provides 879.6 N of push and 738.9 N of pull. The theoretical maximum push is 128 kgf at 1.0 MPa.
Turning the M12x1.25 adjuster screw shortens the forward stroke by up to 40 mm, allowing an extend range of 40 to 80 mm. This screw is a mechanical stop, not a mid-stroke lock; the cylinder will drift if air is lost. This SKU also lacks a magnet, so position sensing requires the -S variant.
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