Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40B
The AirTAC Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40B 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 35 to 75 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke75 mm
- Adjustable range35–75 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 SDAJ40X75-40B
The AirTAC SDAJ40X75-40B is a compact double-acting cylinder featuring an on-machine adjustable extend stop. An external M12x1.25 adjuster screw lets you dial the outward stroke anywhere between 35 and 75 mm, eliminating the need for shims or part swaps during changeovers. Because the mechanism only sets the mechanical end position, output force remains identical to a standard SDA of this bore, delivering 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 space is tight. 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 reed or electronic switches without upgrading to the -S option.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40B Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 75 mm |
| Adjustable range | 35 – 75 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 SDAJ40X75-40B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SDAJ40X75-40B Is Used
Adjustable Press Stops
Dial the extend stroke from 35 to 75 mm on the fly to accommodate varying material thicknesses in small pressing fixtures without machining new spacers.
Format Changeovers
Speed up packaging line changeovers by turning the M12x1.25 screw to reposition the 628.3 N push point for different carton sizes directly at the machine.
Trial Positioning
Perfect for prototype assembly stations where the exact extend endpoint needs iterative fine-tuning before locking down the final mechanical stop.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40B the Right Cylinder?
When sizing this 40 mm bore, evaluate your neighbors: an SDAJ32 yields 402.1 N push at 0.5 MPa, while an SDAJ50 provides 981.7 N. The 628.3 N output here supports a safe working load of roughly 377 N (about 60 percent of capacity) or a vertical lift near 32 kg with a 2:1 safety margin. Choose this model if your fixture requires frequent trial positioning or rapid format changes.
Confirm the 75 mm maximum stroke, 40 mm adjustment window, PT1/8 port, and the male M14x1.5 rod thread. Remember that a plain SDAJ does not hold position if air pressure drops or the valve centers—the fixed bumper only decelerates near the end. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 35–75 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 SDAJ40X75-40B FAQ
This double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum push of 128 kgf at 1.0 MPa.
Turning the external M12x1.25 screw shortens the extend stop by up to 40 mm, giving a usable range of 35-75 mm. It is strictly a mechanical stop, not a mid-stroke lock, and the cylinder will drift if air is lost.
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