Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 0 to 40 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke40 mm
- Adjustable range0–40 mm
- Adjuster threadM12×1.25
- Port sizePT1/8
- 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 B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB
The B01-SDAJ40X40-40SB is an AirTAC compact double-acting single-rod cylinder featuring an external adjustable extend stop. The leading B01- prefix marks this as an application-dedicated, customer-specified variant of the base SDAJ40X40-40SB; mechanically, every physical specification is identical. A short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit.
Turning the R (M12x1.25) adjuster screw shortens the extend end-position on-site, yielding a usable extend range of 0-40 mm. The screw sets the mechanical stop without altering the piston area, so force equals a standard SDA of this bore, delivering about 628.3 N push at 0.5 MPa. This unit includes a built-in piston magnet for AirTAC reed or electronic switches and a male M14x1.5 rod thread.
Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 40 mm |
| Adjustable range | 0 – 40 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 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.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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).
Where the Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB Is Used
Machining Clamps
Dial the extend stop from 0 to 40 mm to position clamping jaws precisely on variable part sizes without machining new spacers.
Carton Forming
Adjust the male M14x1.5 rod endpoint on-site to fold different box heights, relying on the fixed NBR bumper to absorb the end shock.
Vertical Lift Stops
Lift approximately 32 kg with a 2:1 safety margin, setting the upper travel limit via the M12x1.25 adjuster screw for exact placement.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB the Right Cylinder?
Size both ways using real 0.5 MPa push figures: stepping down to SDAJ32 yields 402.1 N, while stepping up to SDAJ50 provides 981.7 N. This 40 mm bore generates 628.3 N push, translating to a safe working load of roughly 377 N or a vertical lift of about 32 kg with a 2:1 margin. Choose this model when your fixture requires on-site stroke tuning to dial in a precise end position.
Confirm the 40 mm stroke, 40 mm adjustment window, PT1/8 port, -S magnet, and male M14x1.5 rod thread. A plain cylinder does not hold its load on air loss or when the valve is centred; the piston drifts and the fixed NBR bumper only decelerates near the stroke end, so add an external rod lock or pilot-operated check valve for load holding.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–40 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 M12×1.25 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 B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB FAQ
The B01- prefix designates an application-dedicated variant of the SDAJ40X40-40SB, sharing identical specs. Force is unchanged by the adjuster: push is 628.3 N and pull is 527.8 N at 0.5 MPa; push is 879.6 N at 0.7 MPa. The theoretical max push is 128 kgf at 1.0 MPa. It operates at 30-500 mm/s with a PT1/8 port.
The R (M12x1.25) screw shortens the extend stroke by up to 40 mm, giving a usable range of 0-40 mm; retract remains full. The -S code means a built-in magnet is present for position sensing with AirTAC reed or electronic switches. The adjuster is a mechanical stop, not a mid-stroke lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SDAJ Cylinders
Request a Quote for Airtac B01-SDAJ Special Cylinder B01-SDAJ40X40-40SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.