
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-30B 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 50 mm on the machine — no shims, no part change.
The AirTAC SDAJ80X50-30B is a double-acting compact cylinder featuring an external M20x1.5 adjustment screw that dials the extend stop between 20 and 50 mm directly on your equipment. It delivers 2513.3 N of push force at 0.5 MPa, matching a standard SDA of this bore because the adjuster sets the mechanical stop, not the piston area. The short riveted body saves axial mounting depth where round-body or profile cylinders will not fit.
This specific SKU includes a male M22x1.5 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches without the -S option. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Operating speed spans 30-500 mm/s across a 0.15-1.0 MPa pressure range.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X50-30B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 50 mm |
| Adjustable range | 20 – 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 30 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
| 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.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | Maximum stroke length in mm. |
| -30 | 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).
Dialing the extend stop from 20 to 50 mm lets operators fine-tune heavy press engagement on the fly without swapping parts.
Lifting a 128.1 kg payload with a 2:1 safety margin is safe, while the male M22x1.5 rod secures heavy tooling plates.
Adjusting the mechanical stop in seconds accommodates varying package sizes on a packaging line during rapid format transitions.
When sizing this 80 mm bore, stepping down to the SDAJ63 yields 1558.6 N of push at 0.5 MPa, whereas stepping up to the SDAJ100 provides 3927 N. This model fits applications needing roughly 2513.3 N, offering a safe working load around 1508 N (about 60% of the 0.5 MPa figure) or a vertical lift capacity near 128.1 kg with a 2:1 margin.
Operators requiring frequent changeover or trial positioning benefit from the 30 mm on-site adjustment window. Remember that a plain SDAJ does not hold position or load when air is lost or the valve is centred; the fixed bumper only decelerates near the end. For load holding without live pressure, install an external rod lock or pilot-operated check valve. Confirm your bore, 50 mm stroke, 30 mm window, PT3/8 port, male M22x1.5 rod, and lack of magnet for this configuration.
Quick checklist
This 80 mm bore cylinder uses a PT3/8 port and generates 2513.3 N push / 2267.8 N pull at 0.5 MPa, 3518.6 N push / 3175 N pull at 0.7 MPa, with a theoretical maximum of 513 kgf at 1.0 MPa.
The M20x1.5 screw shortens the extend end-position from the 50 mm maximum down to 20 mm without shims. It acts only as a mechanical stop, not a mid-stroke lock, and the cylinder cannot hold a load on air loss without an external rod lock.
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