This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X175-20S, 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 MALJ20X175-20-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-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 direct replacement is the MBLJ20X175-20-S.
- BoreØ20 mm
- Stroke175 mm
- Adjust window155–175 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X175-20-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 MALJ20X175-20-S
The AirTAC MALJ20X175-20-S is a discontinued double-acting double-rod mini cylinder with a 20mm bore and 175mm stroke. A rear stopper lets you trim up to 20mm, giving a usable end-position window of 155-175mm. The direct replacement is the MBLJ20X175-20-S, matching the bore, stroke, port, and mounting.
This -S magnet version uses older CS1-M or DS1-M reed switches, whereas the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors. The original MALJ has threaded covers, while the MBLJ features a riveted rolling-packed body. The adjuster is a travel stop, not a lock, and does not hold load without live air. It uses a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X175-20-S |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Adjustable window | 155 – 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 MBLJ20X175-20-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 MBLJ20X175-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-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. |
| -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 MALJ20 Adjustable Mini Cylinder MALJ20X175-20-S Is Used
Dispenser Valve Height
Fine-tune the stroke window on an adhesive dispenser to lower a needle valve precisely onto a carton, relying on the fixed rubber bumper to soften the end impact.
Lightweight Part Ejector
Adjust the end position by up to 20mm to eject small plastic mouldings from a test fixture, ensuring the rod retracts fully without adding external stops.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-S with MBLJ20X175-20-S
To replace this MALJ20X175-20-S, order the MBLJ20X175-20-S. Confirm the 20mm bore, 175mm stroke, 20mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet means you must also upgrade from CS1-M/DS1-M to CMSG/DMSG/EMSG switches. Remember the adjuster sets the end position but does not hold the load without air.
For sizing, if you need less force, step down to a 15mm bore, though 20mm is the smallest MALJ size available. At 175mm stroke, keep the rod guided to prevent bending and side-load wear.
Upgrade checklist
- ✓ Order the MBLJ20X175-20-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 MBLJ20X175-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-20-S FAQ
Yes, the MALJ20X175-20-S is discontinued. The direct replacement is the MBLJ20X175-20-S, which keeps the 20mm bore, 175mm stroke, and 20mm adjust code. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -20 adjust code means a rear screw trims up to 20mm of travel, giving a usable stroke window of 155-175mm. This adjuster is a travel stop, not a lock, so it will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X175-20-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.
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