This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X85-20-S, 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 MALJ20X85-20-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-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 65 to 85 mm. This model is discontinued — the direct replacement is the MBLJ20X85-20-S.
- BoreØ20 mm
- Stroke85 mm
- Adjust window65–85 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X85-20-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 MALJ20X85-20-S
The AirTAC MALJ20X85-20-S is a discontinued double-acting, double-rod mini cylinder with a 20 mm bore and an 85 mm stroke. It provides a usable travel window of 65-85 mm by trimming up to 20 mm at the rear stopper. The direct replacement is the MBLJ20X85-20-S, matching the bore, stroke, force, G1/8 port, and mounting.
This -S SKU includes a magnet for position sensing. The legacy MALJ uses CS1-M or DS1-M reed switches, while the MBLJ upgrade uses CMSG, DMSG, or EMSG sensors. The MALJ features threaded covers, whereas the MBLJ uses 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. End impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X85-20-S |
| Bore size | Ø20 mm |
| Stroke | 85 mm |
| Adjustable window | 65 – 85 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 MBLJ20X85-20-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 MBLJ20X85-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×85 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 65–85 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 MALJ20X85-20-S Is Used
Dispenser Valve Positioning
Fine-tune the retract distance on a pneumatic adhesive dispenser, adjusting the 20 mm rear stopper to alter the nozzle height without reprogramming the machine controller.
Small Part Ejector
Eject small molded plastic parts from a die, using the 132 N pull force to extract the core and the rear stopper to shorten the stroke for faster cycling.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-S with MBLJ20X85-20-S
To replace the MALJ20X85-20-S, order the MBLJ20X85-20-S. Confirm the 20 mm bore, 85 mm stroke, 20 mm adjust code, G1/8 PT port, and M8x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back cover or SDB option. Note the -S magnet changes the sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG. The adjuster sets end position but does not hold load without air; use an external lock for holding.
Upgrade checklist
- ✓ Order the MBLJ20X85-20-S (same bore/stroke/adjust)
- ✓ Same 65–85 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 MBLJ20X85-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X85-20-S FAQ
Yes, the MALJ20X85-20-S is discontinued. The direct replacement is the MBLJ20X85-20-S, which matches the 20 mm bore, 85 mm stroke, 20 mm adjust code, G1/8 port, and force. The MBLJ uses a riveted rolling-packed body instead of threaded covers, and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -20 adjust code allows you to trim up to 20 mm at the rear, creating a usable stroke window from 65 mm to 85 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X85-20-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.
Recommended AirTAC MBLJ Replacements
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