Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S is a genuine double-acting COMPACT cylinder (Ø80mm bore) whose extend end-position is set by an external M20×1.5 adjustment screw. You can dial the stroke anywhere from 20 to 40 mm on the machine — no shims, no part change.
- BoreØ80 mm
- Max stroke40 mm
- Adjustable range20–40 mm
- Adjuster threadM20×1.5
- Port sizePT3/8
- CushionFixed NBR bumper (both ends)
About the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S
The AirTAC SDAJ80X40-20S is a double-acting compact cylinder featuring an external adjustable extend stop. By turning the R (M20x1.5) screw, you can shorten the forward stroke on-site, dialling the rod end precisely between 20 and 40 mm without changing parts. Because the adjuster only sets the mechanical stop and not the piston area, force remains identical to a standard SDA of this bore, delivering 2513.3 N of push at 0.5 MPa.
The short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 40 mm |
| Adjustable range | 20 – 40 mm |
| Adjuster thread (R) | M20×1.5 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M14×1.5 F / M22×1.5 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. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S Is Used
Press Fit Depth Tuning
Dial in precise bearing seating depths from 20 to 40 mm during machine commissioning, leveraging the 2513.3 N push force to seat components without over-stressing the assembly.
Product Divertor Adjustment
Reposition a diverting gate on the fly to handle varying package widths, using the M20x1.5 adjuster screw to set the exact extend stop for each product changeover.
Vertical Lift Stops
Safely raise loads up to 128.1 kg with a 2:1 margin, setting the mechanical stop to prevent over-travel, provided an external check valve is used to hold the load if air pressure drops.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S the Right Cylinder?
When sizing this 80 mm bore, check both neighbours: stepping down to the SDAJ63 yields 1558.6 N push at 0.5 MPa, while stepping up to the SDAJ100 provides 3927 N. This model provides a safe working load of roughly 1508 N (about 60% of its 0.5 MPa capacity) and can vertically lift approximately 128.1 kg with a 2:1 safety margin. Choose the 80 mm bore when your setup-heavy line requires frequent on-machine stroke tuning between 20 and 40 mm.
Confirm the 40 mm maximum stroke, 20 mm adjustment window, PT3/8 air port, and the built-in magnet for switch integration. Remember that a plain cylinder does not hold its load on air loss or when a valve is centred; the piston drifts and the fixed bumper only decelerates near the stroke end. For secure load holding 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 M20×1.5 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20S FAQ
At 0.5 MPa, this double-acting cylinder provides 2513.3 N of push force and 2267.8 N of pull force. At 0.7 MPa, push increases to 3518.6 N and pull to 3175 N. The theoretical maximum push is 513 kgf at 1.0 MPa.
The R (M20x1.5) screw shortens the extend stop by up to 20 mm, giving a usable forward range of 20 to 40 mm; retract remains full stroke. The included -S magnet allows you to track position using AirTAC reed or electronic switches mounted in the body grooves.
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