Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X40-20B
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X40-20B 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 20 to 40 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke40 mm
- Adjustable range20–40 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 SDAJ40X40-20B
The AirTAC SDAJ40X40-20B is a compact double-acting double-rod cylinder featuring an external M12x1.25 adjustment screw that dials the extend stop directly on your machine. You can tune the outward stroke anywhere from 20 to 40 mm without swapping shims or parts, while the retract motion remains full length.
This variant features a male M14x1.5 piston rod thread and ships without a magnet. The short riveted body drastically reduces axial mounting depth where round-body or profile cylinders cannot fit. End-of-travel deceleration is handled by a fixed NBR bumper, which slows the piston near the end of the stroke but is not an adjustable air cushion or a locking brake.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X40-20B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X40-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 40 mm |
| Adjustable range | 20 – 40 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 SDAJ40X40-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | 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 SDAJ40X40-20B Is Used
Short-Stroke Clamping
Dial the extend stop from 20 to 40 mm to accommodate varying raw casting widths on a machining fixture without machining new spacer blocks.
Vertical Lift Stops
Set precise upper travel limits for a 32 kg vertical lift mechanism, using the male M14x1.5 thread to secure the load bracket firmly.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X40-20B the Right Cylinder?
Choose this specific model if your fixture requires on-site extend tuning within the 20-40 mm window and a male M14x1.5 rod end.
Confirm your parameters: 40 mm bore, 40 mm maximum stroke, 20 mm adjustment window, PT1/8 port, and no magnet (this SKU cannot host a reed or electronic switch). Remember that a plain cylinder does not hold position if air pressure drops or the valve centers—the piston will drift. For suspended or vertical loads that must remain fixed without live pressure, 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 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 SDAJ40X40-20B FAQ
It operates between 0.15 and 1.0 MPa at speeds of 30-500 mm/s.
Turning the external M12x1.25 R screw mechanically shortens the extend end-position anywhere from 40 mm down to 20 mm. This SKU lacks a piston magnet, so it cannot accept magnetic switches; you would need the -S variant to use reed or electronic sensors.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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