This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X400-10, 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 MALJ20X400-10
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 10 mm, giving a usable end-position window from 390 to 400 mm. This model is discontinued — the direct replacement is the MBLJ20X400-10.
- BoreØ20 mm
- Stroke400 mm
- Adjust window390–400 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X400-10
- 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 MALJ20X400-10
The AirTAC MALJ20X400-10 is a discontinued double-acting mini cylinder with a 10 mm rear adjustable stroke stopper. It provides a usable travel window of 390-400 mm. This non-standard 400 mm stroke exceeds the standard 300 mm limit for this bore, making it a made-to-order item. The direct replacement is the MBLJ20X400-10.
This unit has no -S magnet, so it cannot take a position sensor. It uses a fixed rubber bumper, not an adjustable air cushion. The adjuster is a travel stop, not a lock. Upgrading to the MBLJ20X400-10 shifts you from threaded covers to a riveted rolling-packed body. If you previously used a -S magnet on this family, the MBLJ switches from CS1-M / DS1-M to CMSG / DMSG / EMSG sensors.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X400-10 |
| Bore size | Ø20 mm |
| Stroke | 400 mm |
| Adjustable window | 390 – 400 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 MBLJ20X400-10 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 MBLJ20X400-10 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×400 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 390–400 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 MALJ20X400-10 Is Used
Film Winder Tension
Trim the 10 mm stopper to set a floating nip roller depth on a slitter rewinder, letting the 8 mm rod absorb web tension variations precisely.
Dispense Head Diving
Fine-tune the dive height of a 220 N @0.7 MPa dispense head into liquid gasket pots, avoiding hard mechanical crashes via the fixed rubber bumper.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10 with MBLJ20X400-10
Replace this MALJ with the MBLJ20X400-10. Confirm the 20 mm bore, 400 mm stroke, 10 mm adjust code, G1/8 port, and M8x1.25 rod thread. Mounting is FA or LB only; there is no back cover or SDB option. The adjuster sets the end position but does not hold load without live air; use an external lock for held loads. At 400 mm, the 8 mm rod is highly susceptible to bending from side loads—ensure strict linear guidance.
Upgrade checklist
- ✓ Order the MBLJ20X400-10 (same bore/stroke/adjust)
- ✓ Same 390–400 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 MBLJ20X400-10 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-10 FAQ
Yes, the MALJ20X400-10 is discontinued. The direct replacement is the MBLJ20X400-10, matching the 20 mm bore, 400 mm stroke, 10 mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the body from threaded covers to a riveted rolling-packed construction.
The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. Also, this SKU lacks a -S magnet and cannot accept a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X400-10 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 MALJ20X400-10 → MBLJ20X400-10)
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