This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X175-20-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X175-20-S in place of this model. The MBLJ replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 155 to 175 mm. This model is discontinued — the drop-in replacement is the MBLJ40X175-20-S.
- BoreØ40 mm
- Stroke175 mm
- Adjust window155–175 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X175-20-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S
The AirTAC MALJ40X175-20-S is a discontinued double-acting, single-rod mini cylinder with a 40mm bore and a 175mm stroke. It features a rear adjustable stop that lets you trim up to 20mm, providing a usable end-position window of 155-175mm. Delivering 628N push and 528N pull force at 0.5MPa, it uses a fixed rubber bumper and a G1/4 port. The exact drop-in replacement is the MBLJ40X175-20-S, matching bore, stroke, force, and mounting.
This -S variant includes a magnet for CS1-M or DS1-M switches, whereas the MBLJ upgrade uses CMSG, DMSG, or EMSG sensors. The MALJ features threaded covers, while the MBLJ uses a riveted rolling-packed body. The adjuster acts as a travel stop, not a load lock; it sets the end position without holding the load without live air. It supports FA or LB mounting and has no back-cover or SDB options.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X175-20-S |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Adjustable window | 155 – 175 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 500 mm |
The rear adjuster is a travel stop, not a lock — it sets the end position but does not hold the load without live air. No back-cover code and no SDB on adjustable-stroke. The MBLJ40X175-20-S carries the same ratings.
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 | |
Single-rod force, same as a standard MAL of this bore. The MBLJ40X175-20-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×175 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 155–175 mm window. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBLJ uses CMSG/DMSG/EMSG). |
Replacement: MALJ → MBLJ. No back-cover (CA/U/CM) and no SDB. Mounting: FA / LB.
Where the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S Is Used
Injection Mold Ejection
Dial the 155-175mm reach to strike an ejector pin at the exact mold base depth, using 628N push force to break stubborn plastic parts loose without over-traveling.
PCB Router Clamping
Tune the stroke window to hold PCB panels against a hard stop during routing, ensuring the 528N pull force retracts the clamp clear of the cutter path.
Pneumatic Press Fit
Set a precise 160mm end-position for pressing bearings into housings, relying on the fixed rubber bumper to soften the 880N impact at 0.7MPa.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S with MBLJ40X175-20-S
To replace the MALJ40X175-20-S, install the MBLJ40X175-20-S. Confirm the 40mm bore, 175mm stroke, 20mm adjust code, G1/4 port, and M12x1.25 rod-end thread. Mounting remains FA or LB only, with no back-cover or SDB code. The -S magnet requires changing from CS1-M/DS1-M to CMSG/DMSG/EMSG switches. The adjuster is a travel stop, not a lock.
For sizing, stepping down to the 32mm bore yields 402N push at 0.5MPa, while stepping up to the largest 40mm bore maintains the 628N push. At 175mm stroke, avoid excessive side-load to prevent rod-bending.
Upgrade checklist
- ✓ Order the MBLJ40X175-20-S (same bore/stroke/adjust)
- ✓ Same 155–175 mm adjustable window
- ✓ Adjuster is a stop, not a lock
- ✓ No back cover / SDB — plan an FA/LB mount
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check The rear adjuster sets the end position — it is not a load lock.
- check No back-cover / SDB on adjustable-stroke — use FA / LB.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the MBLJ40X175-20-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-20-S FAQ
Yes, the MALJ40X175-20-S is discontinued. The exact drop-in replacement is the MBLJ40X175-20-S, which matches the 40mm bore, 175mm stroke, 20mm adjust code, G1/4 port, and mounting. You must upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The usable adjustable stroke window is 155-175mm (175mm stroke minus 20mm adjust). The force figures are: 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The adjuster is a travel stop, not a lock.
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The MBLJ40X175-20-S replaces this model 1:1.
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