
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X50-40B 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 10 to 50 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X50-40B is a compact double-acting single-rod cylinder built for heavy-duty positioning where the extend endpoint must be dialed in on the machine. An external R (M27x2.0) adjustment screw lets you shorten the forward stroke by up to 40 mm, yielding a usable extend range of 10 to 50 mm without swapping shims or parts. Because the adjuster sets the mechanical stop and not the piston area, output force remains identical to a standard SDA of this bore, delivering 3927 N of push at 0.5 MPa.
This model features a short riveted body that saves axial mounting depth in tight fixtures, paired with a 32 mm piston rod and a male M26x1.5 thread end. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Note that this SKU lacks a piston magnet, so it cannot host reed or electronic switches without changing to an -S variant.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X50-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 50 mm |
| Adjustable range | 10 – 50 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 40 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. |
| ×50 | Maximum stroke length in mm. |
| -40 | 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 10-50 mm extend stop on the fly to set precise bottoming depth for stamping operations, leveraging the 3927 N push at 0.5 MPa to form metal without over-travel.
Adjust the mechanical stop during product changeovers to accommodate different workpiece heights, using the fixed NBR bumper to absorb the impact of the 32 mm rod returning under high thrust.
Set exact lifting heights up to 50 mm for a 200.2 kg payload with a 2:1 safety margin, ensuring the short riveted body fits within tight vertical elevator frameworks.
When sizing this 100 mm bore actuator, look at both neighbors. Stepping down to an SDAJ80 yields 2513.3 N push at 0.5 MPa, which may be insufficient for high-tonnage clamping. Stepping up is not possible within this compact family, making this the maximum thrust option at 801 kgf theoretical max at 1.0 MPa. For sizing margins, a safe working load is roughly 2356 N (about 60 percent of the 3927 N at 0.5 MPa figure), allowing a vertical lift of approximately 200.2 kg with a 2:1 safety factor.
Select this specific unit if your fixture requires on-machine stroke tuning between 10 and 50 mm during frequent changeovers. Confirm your setup needs the male M26x1.5 rod thread and a PT3/8 air port. Remember that a plain cylinder does not hold its load on air loss or valve centering; the piston drifts and the fixed bumper only decelerates near the end. For suspended or vertical loads, specify an external rod lock or a pilot-operated check valve.
Quick checklist
This 100 mm bore double-acting cylinder provides 3927 N push and 3524.9 N pull at 0.5 MPa. At 0.7 MPa, push increases to 5497.8 N and pull to 4934.8 N. The theoretical maximum push is 801 kgf at 1.0 MPa.
The external M27x2.0 screw mechanically shortens the extend stroke from the 50 mm maximum down to 10 mm without changing the thrust output. This specific SKU has no piston magnet, so it cannot accept reed or electronic switches; you would need the -S option for sensing.
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