Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B 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 25 to 45 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke45 mm
- Adjustable range25–45 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 SDAJ40X45-20B
The AirTAC SDAJ40X45-20B is a double-acting compact cylinder featuring an external R (M12x1.25) adjustment screw that lets you dial the extend stop down to any position between 25 and 45 mm directly on the machine.
This variant includes a male M14x1.5 piston rod thread for secure tool mounting and utilizes a short riveted body to save axial depth in tight machinery envelopes. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion or a locking mechanism.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 45 mm |
| Adjustable range | 25 – 45 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 20 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
SDAJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SDA push of the same bore. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SDAJ40X45-20B Is Used
Changeover Diverter Gate
Quickly reposition the 40 mm bore actuator on the line during product family changeovers, using the M12x1.25 adjuster screw to set the exact extended push position for new carton sizes.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-20B the Right Cylinder?
Choose this specific configuration when your setup requires frequent on-site stroke tuning between 25 and 45 mm. It carries the -B male rod thread (M14x1.5) and lacks the -S magnet, meaning it cannot host reed or electronic switches. Remember that a plain cylinder drifts when air is lost or a valve centers; the fixed bumper only decelerates near the end and never locks the load, so add an external rod lock or pilot-operated check valve if you need to hold position.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 25–45 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 SDAJ40X45-20B FAQ
The air port is PT1/8.
Turning the external R (M12x1.25) screw mechanically shortens the extend stroke by up to 20 mm, giving a usable range of 25 to 45 mm. It only sets the stop and does not lock the piston; air loss will cause drift, so use a pilot-operated check valve for load holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC SDAJ Cylinders
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