This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X170-30-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X170-30-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 MALJ40X170-30-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 140 to 170 mm. This model is discontinued — the drop-in replacement is the MBLJ40X170-30-S.
- BoreØ40 mm
- Stroke170 mm
- Adjust window140–170 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X170-30-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S
The AirTAC MALJ40X170-30-S is a discontinued 40mm bore, double-acting single-rod mini cylinder with a 170mm stroke and a 30mm rear adjustable stopper, giving a usable end-position window of 140-170mm. It delivers 628N push and 528N pull force at 0.5 MPa. The exact drop-in replacement is the MBLJ40X170-30-S, matching bore, stroke, force, G1/4 port, and mounting.
The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. This SKU includes a magnet (-S) for CS1-M/DS1-M switches, while the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors and a riveted rolling-packed body instead of the MALJ's threaded covers. It uses a fixed rubber bumper, not an adjustable cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X170-30-S |
| Bore size | Ø40 mm |
| Stroke | 170 mm |
| Adjustable window | 140 – 170 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 MBLJ40X170-30-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 MBLJ40X170-30-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×170 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 140–170 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 MALJ40X170-30-S Is Used
Injection Mold Ejection
Dial the 140-170mm reach to strike ejector pins precisely, using the 628N push at 0.5 MPa to clear molded parts without over-traveling the mold.
Printed Circuit Board Staging
Set a specific 160mm end stop to lower a PCB into a testing fixture, preventing impact damage via the fixed rubber bumper while the 528N pull retracts the tooling.
Carton Flap Folding
Adjust the stroke down to 150mm to consistently tuck packaging flaps on a filling line, relying on the 880N push at 0.7 MPa to overcome board stiffness.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S with MBLJ40X170-30-S
To replace the MALJ40X170-30-S, order the drop-in MBLJ40X170-30-S, confirming the 40mm bore, 170mm stroke, 30mm adjust code, PT G1/4 port, M12x1.25 rod thread, and FA/LB mounting (no back cover or SDB). The -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG. If sizing force, the 32mm bore neighbour gives 402N push at 0.5 MPa (stepping down), while 40mm is the largest MALJ bore available (128 kgf max at 1.0 MPa). The adjuster is a stop, not a lock. At 170mm stroke, guard against rod-bending side loads.
Upgrade checklist
- ✓ Order the MBLJ40X170-30-S (same bore/stroke/adjust)
- ✓ Same 140–170 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 MBLJ40X170-30-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X170-30-S FAQ
Yes, the MALJ40X170-30-S is discontinued. The exact drop-in replacement is the MBLJ40X170-30-S, matching the 40mm bore, 170mm stroke, 30mm adjust code, G1/4 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 30mm adjuster lets you trim the 170mm stroke back to a 140mm minimum, creating a 140-170mm usable window. The full force figures are: 628N push and 528N pull at 0.5 MPa, 880N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. The adjuster is a travel stop, not a lock.
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The MBLJ40X170-30-S replaces this model 1:1.
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