Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20B
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20B 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 65 to 85 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke85 mm
- Adjustable range65–85 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 SDAJ40X85-20B
The AirTAC SDAJ40X85-20B is a compact double-acting double-rod cylinder built for tight mounting envelopes. Its short riveted body saves valuable axial depth where larger profile bodies cannot fit. An external R (M12x1.25) adjustment screw lets you dial the extend stop directly on the machine, providing a usable stroke range of 65 to 85 mm without swapping shims or parts.
Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore. End-of-travel shock is handled by a fixed NBR bumper, which decelerates the piston but is not an adjustable air cushion. This specific SKU features a male M14x1.5 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches without the -S option.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 85 mm |
| Adjustable range | 65 – 85 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 SDAJ40X85-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | 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 SDAJ40X85-20B Is Used
Tooling Changeover
Dial the extend stop from 65 to 85 mm via the M12x1.25 screw to accommodate varying part heights during machine setup without machining new spacers.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20B the Right Cylinder?
Choose the SDAJ40X85-20B if your fixture requires on-site extend tuning between 65 and 85 mm.
Confirm your setup needs the male M14x1.5 rod thread (option B) and the PT1/8 port. Remember that a plain SDAJ will not hold a load if air pressure drops or the valve centres; the bumper only decelerates near the end. For suspended loads, integrate an external rod lock or pilot-operated check valve. Since this SKU omits the magnet, position sensing is unavailable.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 65–85 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 SDAJ40X85-20B FAQ
The air port is PT1/8.
Turning the external R (M12x1.25) screw shortens the extend stroke by up to 20 mm, giving a usable range of 65 to 85 mm. It acts purely as a mechanical stop and does not alter force; it will not hold a load if air is lost.
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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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