Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B 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 25 to 45 mm on the machine — no shims, no part change.
- BoreØ100 mm
- Max stroke45 mm
- Adjustable range25–45 mm
- Adjuster threadM27×2.0
- Port sizePT3/8
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B
The AirTAC SDAJ100X45-20B is a double-acting, single-rod compact cylinder featuring an external adjustable extend stop. A M27x2.0 adjuster screw lets you dial the forward stroke down from the 45 mm maximum to as low as 25 mm directly at the machine, eliminating the need for shims or part swaps during changeovers. Because the adjuster only sets the mechanical stop and not the piston area, output force remains identical to a standard SDA of this bore, delivering 3927 N push at 0.5 MPa.
This model uses a short riveted body to save axial mounting depth in tight setups, which is critical when scaling up to a 32 mm rod and a PT3/8 port. It includes a fixed NBR bumper at each end to decelerate the stroke, but this is not an adjustable air cushion. Equipped with the -B option, the piston rod features a male M26x1.5 thread for secure external mounting.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 45 mm |
| Adjustable range | 25 – 45 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 20 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø100mm)
| 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.
Model Code: Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×45 | 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 SDAJ100X45-20B Is Used
Heavy Fixture Positioning
Dial in the exact 25 to 45 mm clamping reach on large machining fixtures without swapping components, leveraging the 3927 N push to secure heavy castings.
Press Fit Tuning
Adjust the insertion depth of bearings or pins on the production floor by turning the M27x2.0 stop screw, accommodating part tolerances on the fly.
Vertical Lift Stops
Set precise lifting heights for 200 kg material trays; remember to add an external pilot-operated check valve, as the bumper decelerates but does not lock the load.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20B the Right Cylinder?
When sizing this 100 mm bore actuator, evaluate your force needs both ways. If 3927 N push at 0.5 MPa is excessive, stepping down to the SDAJ80 yields 2513.3 N, saving valuable envelope space. If this is the maximum bore available, you can safely handle a working load of roughly 2356 N, which is about 60 percent of the 0.5 MPa push figure, or lift approximately 200.2 kg vertically with a 2:1 safety margin.
This SKU is ideal for operators needing on-site reach tuning between 25 and 45 mm. Note that a plain cylinder does not hold its load upon air loss or valve centring; the piston drifts and the fixed bumper only decelerates near the end of the stroke. For suspended or vertical loads, integrate an external rod lock or pilot-operated check valve. Confirm your requirements for the 100 mm bore, 45 mm stroke, 20 mm window, PT3/8 port, male M26x1.5 rod thread, and the absence of a piston magnet.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 25–45 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 M27×2.0 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 SDAJ100X45-20B FAQ
This 100 mm bore cylinder delivers 3927 N push and 3524.9 N pull at 0.5 MPa, and 5497.8 N push and 4934.8 N pull at 0.7 MPa. The theoretical maximum push force is 801 kgf at 1.0 MPa.
The external M27x2.0 screw mechanically shortens the forward stroke from the 45 mm maximum down to 25 mm without changing the force output. This specific SKU lacks a piston magnet, so it cannot take magnetic switches; you would need the -S variant to use reed or electronic sensors.
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