This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the drop-in replacement MBLJ40X175-50S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 MALJ40X175-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 125 to 175 mm. This model is discontinued — the drop-in replacement is the MBLJ40X175-50-S.
- BoreØ40 mm
- Stroke175 mm
- Adjust window125–175 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X175-50-S
- 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 MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S
The AirTAC MALJ40X175-50-S is a discontinued double-acting mini cylinder with a 40 mm bore and a 175 mm stroke. It provides a usable extension window of 125-175 mm via its 50 mm rear adjuster. This 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X175-50-S, matching the bore, stroke, force, and G1/4 port.
This -S SKU includes a magnet for position sensing. The legacy MALJ uses CS1-M / DS1-M switches, while the MBLJ upgrade uses CMSG / DMSG / EMSG sensors. The original MALJ features threaded covers, whereas the MBLJ uses a riveted rolling-packed body. The rear adjuster acts as a travel stop to fine-tune reach without external hardware; it does not hold the load without live air. End impact is absorbed by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X175-50-S |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Adjustable window | 125 – 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 MBLJ40X175-50-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 MBLJ40X175-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-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. |
| -50 | Adjustable amount: trim the end to a 125–175 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 MALJ40X175-50-S Is Used
PCB Router Depth Stop
Dial the 125-175 mm window to set router Z-axis depth on a PCB depaneling machine, using the 628 N push force to hold the cutting head firmly at the trimmed end position.
Carton Flap Folder
Adjust the rear stop on a packaging line to fold varying corrugated carton flaps, relying on the fixed rubber bumper to absorb the 880 N impact at 0.7 MPa without external shock absorbers.
Aluminum Extrusion Gauge
Fine-tune the 50 mm adjuster on an extrusion cut-off saw to act as a physical depth gauge for different profile lengths, preventing rod side-load by locking the stroke before full extension.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S with MBLJ40X175-50-S
To replace the MALJ40X175-50-S with the MBLJ40X175-50-S, confirm the 40 mm bore, 175 mm stroke, 50 mm adjust code, G1/4 port, and PT thread. Mounting is Basic, FA, or LB only (no back cover or SDB). You must also change your sensors: the MALJ -S magnet works with CS1-M / DS1-M switches, but the MBLJ requires CMSG / DMSG / EMSG switches.
If sizing this 40 mm bore, stepping down to the 32 mm bore yields 402 N push at 0.5 MPa, while stepping up is not possible as 40 mm is the largest MALJ bore. Remember the adjuster is a stop, not a lock. At 175 mm stroke, minimize side-load on the 16 mm rod to prevent bending and seal wear.
Upgrade checklist
- ✓ Order the MBLJ40X175-50-S (same bore/stroke/adjust)
- ✓ Same 125–175 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 MBLJ40X175-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-50-S FAQ
Yes, the MALJ40X175-50-S is discontinued. The exact drop-in replacement is the MBLJ40X175-50-S, which matches the 40 mm bore, 175 mm stroke, 50 mm adjust code, 628 N push force, and G1/4 port. You will need to upgrade your sensors from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The full figure set is 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. The 50 mm adjuster provides a usable stroke window of 125-175 mm. The adjuster is a travel stop, not a lock, and it will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X175-50-S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
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