This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X500-50-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X500-50-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 MALJ40X500-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-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 450 to 500 mm. This model is discontinued — the drop-in replacement is the MBLJ40X500-50-S.
- BoreØ40 mm
- Stroke500 mm
- Adjust window450–500 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X500-50-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S
The AirTAC MALJ40X500-50-S is a discontinued double-acting single-rod mini cylinder with a rear adjustable stroke stopper. It delivers 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X500-50-S, matching the 40 mm bore, 500 mm stroke, and G1/4 port. The -50 adjust code lets you dial the end position back by up to 50 mm, creating a 450-500 mm usable stroke window without external stops.
This -S variant carries a magnet for CS1-M or DS1-M reed switches; the MBLJ successor upgrades this to CMSG, DMSG, or EMSG sensors. The original MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body. Impact is absorbed by a fixed rubber bumper, not an adjustable air cushion. Remember that the rear adjuster is a travel stop that sets the end position, not a mechanical lock that holds a load without live air pressure.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X500-50-S |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Adjustable window | 450 – 500 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 MBLJ40X500-50-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 MBLJ40X500-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×500 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 450–500 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 MALJ40X500-50-S Is Used
Long-Reach Pallet Dispenser
Drives a 500 mm extraction arm in an end-of-line pallet dispenser. The 628 N push force at 0.5 MPa handles heavy wooden pallets, while the 50 mm rear stop trims the extended reach to clear varying pallet stack heights.
Automated Door Panel Press
Acts as the primary mover in an automotive door panel hemming press. The 450-500 mm adjustable window allows operators to fine-tune the exact clamping depth on the fly without swapping out the entire cylinder body.
Textile Roll Ejector
Ejects heavy fabric rolls from a winding machine. The 40 mm bore provides the necessary 528 N pull force to retract the heavy rod against material drag, and the rear stop sets the precise resting position for the next roll.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S with MBLJ40X500-50-S
To replace the MALJ40X500-50-S with the MBLJ40X500-50-S, confirm the 40 mm bore, 500 mm stroke, 50 mm adjust code, G1/4 port, PT thread, and FA or LB mounting (there is no back cover or SDB option). You must also change your sensors: the MALJ -S magnet works with CS1-M/DS1-M switches, while the MBLJ uses CMSG/DMSG/EMSG. If you need to size either direction, stepping down to a 32 mm bore yields 402 N push at 0.5 MPa, while stepping up is not available as 40 mm is the largest MALJ bore.
Because this cylinder runs a 500 mm stroke, be wary of rod bending under side loads. The rear adjuster is a travel stop, not a lock; it cannot hold a load without continuous air pressure. Use an external locking mechanism if you need static holding power.
Upgrade checklist
- ✓ Order the MBLJ40X500-50-S (same bore/stroke/adjust)
- ✓ Same 450–500 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 MBLJ40X500-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-50-S FAQ
Yes, the MALJ40X500-50-S is discontinued. The exact drop-in replacement is the MBLJ40X500-50-S, which matches the 40 mm bore, 500 mm stroke, 50 mm adjust code, and G1/4 port. The MBLJ upgrades the body from threaded covers to a riveted rolling-packed design, and you must swap your CS1-M or DS1-M sensors for CMSG, DMSG, or EMSG switches.
The 40 mm bore provides 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 adjust code allows you to shorten the stroke by up to 50 mm, giving a usable end-position window of 450-500 mm. Note that this rear adjuster is a travel stop, not a lock, and it cannot hold a load without live air pressure.
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The MBLJ40X500-50-S replaces this model 1:1.
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