Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B 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 30 to 50 mm on the machine — no shims, no part change.
- BoreØ80 mm
- Max stroke50 mm
- Adjustable range30–50 mm
- Adjuster threadM20×1.5
- Port sizePT3/8
- CushionFixed NBR bumper (both ends)
About the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B
The AirTAC SDAJ80X50-20B is a double-acting compact cylinder featuring an on-site adjustable extend stop. An external M20x1.5 screw lets you dial the forward end-position anywhere between 30 and 50 mm, eliminating the need for shims or part swaps during changeovers. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 2513.3 N of push at 0.5 MPa.
This 80 mm bore unit saves valuable axial mounting depth through its short riveted body, fitting where larger profile cylinders cannot. It carries a male M22x1.5 piston rod thread and a PT3/8 air port. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not 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 variant.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 50 mm |
| Adjustable range | 30 – 50 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 SDAJ80X50-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SDAJ80X50-20B Is Used
Press Fit Depth Tuning
Dial in precise 30-50 mm insertion depths for bearing presses on the machine, leveraging the 2513.3 N push to seat components without changing parts.
Variable Length Diverter
Adjust the extend stop on-site to deflect different carton sizes, using the 128.1 kg vertical lift margin to handle heavy product transitions reliably.
Heavy Clamping Setup
Fine-tune clamp positions during production changeovers, saving axial space with the compact riveted body while delivering consistent holding force.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-20B the Right Cylinder?
When sizing this model, compare its 2513.3 N push at 0.5 MPa against adjacent bores. Stepping down to an SDAJ63 yields 1558.6 N, whereas stepping up to an SDAJ100 provides 3927 N. Based on the 0.5 MPa rating, a safe working load is roughly 1508 N (about 60 percent of capacity), translating to a vertical lift capability of approximately 128.1 kg with a 2:1 safety margin.
Choose the SDAJ80X50-20B if your fixture requires exact forward positioning tuned on the machine, keeping in mind the 30-50 mm adjust window and the male M22x1.5 rod end. A plain cylinder drifts when air is lost or the valve centers, as the fixed bumper only decelerates near the end of travel and the R screw acts as a stop, not a lock. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 30–50 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 SDAJ80X50-20B FAQ
At 0.5 MPa this 80 mm bore cylinder provides 2513.3 N of push and 2267.8 N of pull. At 0.7 MPa push increases to 3518.6 N. The theoretical maximum push is 513 kgf at 1.0 MPa.
Turning the external M20x1.5 screw shortens the extend stroke by up to 20 mm, allowing you to set the forward stop anywhere between 30 and 50 mm. The retract stroke remains full, and the adjustment does not alter the output force.
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