This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X500-75, 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 MALJ20X500-75
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 425 to 500 mm. This model is discontinued — the direct replacement is the MBLJ20X500-75.
- BoreØ20 mm
- Stroke500 mm
- Adjust window425–500 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X500-75
- 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 MALJ20X500-75
The AirTAC MALJ20X500-75 is a discontinued double-acting double-rod mini cylinder with a rear adjustable stroke. The 75mm adjuster trims the end position, yielding a usable 425-500mm window from a 500mm base stroke. The direct replacement is the MBLJ20X500-75, matching bore, stroke, adjust code, port and force.
This non-standard 500mm stroke exceeds the 300mm max standard for bore 20, making it a made-to-order item. It has a fixed rubber bumper, not an adjustable cushion. The adjuster sets travel but does not hold load without live air. The original threaded covers and CS1-M/DS1-M sensor groove are upgraded in the MBLJ to a riveted body and CMSG/DMSG/EMSG switches. This SKU lacks a magnet, so it cannot take a sensor.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X500-75 |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Adjustable window | 425 – 500 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 MBLJ20X500-75 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 MBLJ20X500-75 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×500 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 425–500 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 MALJ20 Adjustable Mini Cylinder MALJ20X500-75 Is Used
Long-reach diverter gates
Dials the exact push distance (425-500mm) for pneumatic diverter flaps on packaging lines without machining new hard stops.
Film roll tensioning
Sets precise end-of-stroke reach on winding machinery, allowing 75mm of rear adjustment to dial in tension without moving brackets.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 with MBLJ20X500-75
To replace this MALJ20X500-75, order the exact direct replacement MBLJ20X500-75. Confirm the 20mm bore, 500mm stroke, 75mm adjust code, G1/8 port, PT threads, and FA/LB mounting (no back cover or SDB allowed). The adjuster is a travel stop, not a lock; add an external lock for held loads. Since this lacks the -S magnet, it cannot accept a position sensor, whereas an MBLJ20X500-75S would use CMSG/DMSG/EMSG switches.
At 500mm stroke on a thin 8mm rod, rod-bending and side-load risks are high—ensure rigid guide rails to prevent binding. The 500mm stroke is non-standard for bore 20 and requires made-to-order lead times.
Upgrade checklist
- ✓ Order the MBLJ20X500-75 (same bore/stroke/adjust)
- ✓ Same 425–500 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 MBLJ20X500-75 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 FAQ
Yes, the MALJ20X500-75 is discontinued. The direct replacement is the MBLJ20X500-75, matching the 20mm bore, 500mm stroke, 75mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 75mm adjuster creates a usable stroke window of 425-500mm. This 500mm stroke is non-standard (exceeding the 300mm max) and made-to-order.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X500-75 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
Request a Quote (Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75 → MBLJ20X500-75)
Tell us the quantity and destination — we quote the direct MBLJ20X500-75 replacement with price, stock and lead time, usually within 7-8 hours.