Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B 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 35 to 55 mm on the machine — no shims, no part change.
- BoreØ80 mm
- Max stroke55 mm
- Adjustable range35–55 mm
- Adjuster threadM20×1.5
- Port sizePT3/8
- CushionFixed NBR bumper (both ends)
About the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B
The AirTAC SDAJ80X55-20B is a double-acting compact cylinder featuring an external adjustable extend stop. By turning the R (M20x1.5) screw, you can dial the extend stroke down by up to 20 mm directly on the machine, yielding a usable forward range of 35-55 mm without swapping shims or parts. Because the adjuster sets the mechanical stop rather than 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 utilizes a short riveted body to minimize axial mounting depth in tight machinery layouts. The piston rod is 25 mm thick and features a male M22x1.5 thread end. 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 host reed or electronic switches; the -S variant is required for position sensing.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 55 mm |
| Adjustable range | 35 – 55 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 SDAJ80X55-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | 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 SDAJ80X55-20B Is Used
Press Fit Tuning
Dial the 35-55 mm extend stop to set precise contact depth on bearing press fits, using the full 2513.3 N push force without changing top tooling plates.
Vertical Lift Stops
Raise components up to 128.1 kg safely; adjust the forward stop in 20 mm of travel to accommodate varying part heights while maintaining a 2:1 safety margin.
Changeover Diverter
Reposition a package diverting gate on the fly by turning the R M20x1.5 screw, adapting the actuator length for different carton sizes without remounting hardware.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-20B the Right Cylinder?
When sizing this model, compare its 2513.3 N push at 0.5 MPa against adjacent bores: stepping down to SDAJ63 yields 1558.6 N, while stepping up to SDAJ100 provides 3927 N. Based on the 2513.3 N output, the safe working load is approximately 1508 N (about 60 percent of capacity), translating to a vertical lift capability of roughly 128.1 kg with a 2:1 safety margin. This makes the 80 mm bore ideal for medium-heavy pressing and lifting where a 63 mm falls short.
Choose the SDAJ80X55-20B if your fixture requires frequent on-machine stroke tuning between 35 and 55 mm during changeovers. The PT3/8 port and male M22x1.5 rod thread are fixed by the bore and B option. Remember that a plain cylinder does not hold position on air loss or valve centering; the fixed bumper only decelerates near the end of travel. For suspended or vertical loads that must not drift, integrate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 35–55 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 SDAJ80X55-20B FAQ
This 80 mm bore double-acting cylinder provides 2513.3 N push and 2267.8 N pull at 0.5 MPa. At 0.7 MPa, push increases to 3518.6 N. The theoretical maximum push force is 513 kgf at 1.0 MPa.
The external R (M20x1.5) screw mechanically shortens the extend end-position by up to 20 mm, giving a usable range of 35-55 mm. It does not alter force or lock mid-stroke; the cylinder cannot hold a load without live air pressure.
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