This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X175-40S, 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 MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 135 to 175 mm. This model is discontinued — the direct replacement is the MBLJ20X175-40-S.
- BoreØ20 mm
- Stroke175 mm
- Adjust window135–175 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X175-40-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 MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S
The AirTAC MALJ20X175-40-S is a discontinued double-acting mini cylinder with a rear travel stop. The 40mm adjust code creates a usable 135-175mm end-position window. The direct replacement is the MBLJ20X175-40-S.
The rear adjuster sets reach without external stops, but it is a travel stop, not a lock. This -S SKU uses older CS1-M/DS1-M switches, while the MBLJ upgrade uses CMSG/DMSG/EMSG sensors in a riveted body. It has a fixed rubber bumper and threaded covers.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X175-40-S |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Adjustable window | 135 – 175 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 300 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 MBLJ20X175-40-S carries the same ratings.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ20X175-40-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×175 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 135–175 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 MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S Is Used
PCB Depaneling Saw Stop
Dial in the 135-175mm blade clearance on an inline PCB depaneling saw.
Dispenser Nozzle Height
Fine-tune the drop height on a viscous adhesive dispenser. The 40mm rear adjustment lets you alter the 175mm reach for different cartridge tips without machining new brackets.
Lead Wire Forming
Set the exact bend depth for a wire lead forming jig. The 132N pull force handles light-gauge copper, while the rear stopper holds the exact 135-175mm forming depth.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S with MBLJ20X175-40-S
Replace this MALJ with the MBLJ20X175-40-S to retain the 20mm bore, 175mm stroke, 40mm adjust, G1/8 port, and M8 rod. The MBLJ uses a riveted rolling-packed body and CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. Mounting is FA or LB only; no back cover or SDB is used. The adjuster is a stop, not a lock.
At 175mm stroke, minimize side loads to prevent rod bending.
Upgrade checklist
- ✓ Order the MBLJ20X175-40-S (same bore/stroke/adjust)
- ✓ Same 135–175 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 MBLJ20X175-40-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40-S FAQ
Yes, the MALJ20X175-40-S is discontinued. The direct replacement is the MBLJ20X175-40-S, which matches the 20mm bore, 175mm stroke, 40mm adjust, G1/8 port, and 32 kgf max. 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 40mm adjuster trims the 175mm stroke to a usable 135-175mm window. The adjuster is a travel stop only; it does not hold the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X175-40-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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