This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X175-50S, 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 MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-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 direct replacement is the MBLJ20X175-50-S.
- BoreØ20 mm
- Stroke175 mm
- Adjust window125–175 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X175-50-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 MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S
The AirTAC MALJ20X175-50-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It provides a usable end-position window of 125-175 mm by trimming up to 50 mm at the rear. The direct replacement is the MBLJ20X175-50-S, matching the bore, stroke, adjust code, force, and G1/8 port.
This -S SKU includes a magnet for the older CS1-M / DS1-M switches; the MBLJ replacement moves to the CMSG / DMSG / EMSG sensor family. The MALJ uses threaded covers and a fixed rubber bumper, while the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air pressure.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X175-50-S |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Adjustable window | 125 – 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 MBLJ20X175-50-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 MBLJ20X175-50-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-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. |
| -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 MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S Is Used
Wire Harness Forming
Fine-tune the end position up to 50 mm short of the 175 mm stroke to bend complex wire looms into a jig without repositioning the cylinder body.
Micro-Dispense Valve Trigger
Adjust the rear stopper to control the exact open stroke of a pneumatic dispensing valve, ensuring consistent shot volumes for electronic potting.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S with MBLJ20X175-50-S
To replace the MALJ20X175-50-S, order the exact direct replacement MBLJ20X175-50-S. Confirm the 20 mm bore, 175 mm stroke, 50 mm adjust code, G1/8 port, and PT thread. Mounting is Basic, FA, or LB only (no back cover or SDB). The -S magnet changes your sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG. The adjuster is a travel stop, not a lock; use an external lock for held loads.
At 175 mm stroke, the 8 mm rod is susceptible to side-load bending; ensure your guide supports the load to prevent rod binding.
Upgrade checklist
- ✓ Order the MBLJ20X175-50-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 MBLJ20X175-50-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50-S FAQ
Yes, the MALJ20X175-50-S is discontinued. The direct replacement is the MBLJ20X175-50-S. It matches the 20 mm bore, 175 mm stroke, 50 mm adjust code, G1/8 port, and force. You will upgrade the magnet switches from CS1-M / DS1-M to CMSG / DMSG / EMSG, and the body changes from threaded covers to a riveted rolling-packed design.
The 50 mm adjust code lets you trim the rear end position by up to 50 mm, creating a usable stroke window from 125 mm to 175 mm. The adjuster is a travel stop, not a lock; it sets the end position but does not hold load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X175-50-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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