
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X70-50SB is a genuine double-acting COMPACT cylinder (Ø100mm bore) whose extend end-position is set by an external M27×2.0 adjustment screw. You can dial the stroke anywhere from 20 to 70 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X70-50SB is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. Turning the R (M27x2.0) screw lets you dial the outward stroke on-site between 20 and 70 mm without swapping parts. Because the mechanism sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, providing 3927 N push at 0.5 MPa.
This model includes a built-in piston magnet for AirTAC reed or electronic switches and a male-thread piston rod (M26x1.5). The short riveted body saves axial mounting depth where larger profile cylinders cannot fit. End shock is managed solely by a fixed NBR bumper, which decelerates the stroke end but is not an adjustable air cushion.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X70-50SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 70 mm |
| Adjustable range | 20 – 70 mm |
| Adjuster thread (R) | M27×2.0 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M18×1.5 F / M26×1.5 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 50 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 | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | Maximum stroke length in mm. |
| -50 | 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).
Dial in the exact 20-70 mm extend stop on a 200.2 kg vertical press without shims, relying on 3927 N of push force.
Adjust the outward stroke on-site for different part heights, letting the fixed NBR bumper absorb the 5497.8 N impact at 0.7 MPa.
Lift heavy assemblies using the male M26x1.5 rod, tweaking the stop position to clear obstacles within tight riveted-body clearances.
When sizing this 100 mm bore actuator, evaluate your force requirements bidirectionally. Dropping to an SDAJ80 yields 2513.3 N push at 0.5 MPa, whereas this 100 mm bore provides 3927 N. A safe working load is approximately 2356 N, representing about 60 percent of the 0.5 MPa push figure, which translates to a vertical lift capacity of roughly 200.2 kg with a 2:1 safety margin.
Choose this specific configuration if your machine requires frequent extend-position tuning during changeovers. Verify your setup needs the 20-70 mm adjust window, PT3/8 port, the -S magnet for sensing, and the -B male M26x1.5 rod thread. Note that a plain cylinder drifts when air is lost or the valve is centered; the fixed bumper only decelerates near the end and the adjuster is a mechanical stop, not a lock. For secure load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
At 0.5 MPa it provides 3927 N push and 3524.9 N pull. At 0.7 MPa it provides 5497.8 N push and 4934.8 N pull. The theoretical maximum push is 801 kgf at 1.0 MPa.
The R (M27x2.0) screw shortens the extend stop by up to 50 mm, giving a usable 20-70 mm range. The included -S magnet works with AirTAC reed or electronic switches for position sensing.
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