This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X70-20-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 MALJ20X70-20-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-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 50 to 70 mm. This model is discontinued — the direct replacement is the MBLJ20X70-20-S.
- BoreØ20 mm
- Stroke70 mm
- Adjust window50–70 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X70-20-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 MALJ20X70-20-S
The AirTAC MALJ20X70-20-S is a discontinued double-acting, double-rod mini cylinder with a 20mm bore and 70mm stroke. It features a rear adjustable stroke stopper that lets you trim the end position by up to 20mm, creating a usable stroke window of 50-70mm. The direct replacement is the MBLJ20X70-20-S, matching the bore, stroke, G1/8 port, and mounting.
This -S variant includes a magnet for position sensing. The original MALJ uses CS1-M or DS1-M switches, while the MBLJ upgrade uses CMSG, DMSG, or EMSG sensors. The MALJ has threaded covers and a fixed rubber bumper that softens end impact, but the adjuster is a travel stop, not a lock. The MBLJ improves durability with a riveted rolling-packed body. Both lack a back cover and use FA or LB mounting.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X70-20-S |
| Bore size | Ø20 mm |
| Stroke | 70 mm |
| Adjustable window | 50 – 70 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 MBLJ20X70-20-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 MBLJ20X70-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×70 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 50–70 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 MALJ20X70-20-S Is Used
Dispenser Valve Tamping
Fine-tune the downward reach of a micro-fluid dispenser valve tamping station, adjusting the rear stopper to 55mm to prevent crushing delicate glass vials.
Wire Harness Forming
Actuate a wire harness bending jig where the 132N pull force retracts the forming pin, and the adjustable stop lets you tweak the bend radius without swapping hardware.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-S with MBLJ20X70-20-S
To replace the MALJ20X70-20-S, order the MBLJ20X70-20-S. Confirm your 20mm bore, 70mm stroke, 20mm adjust code, G1/8 PT port, and FA/LB mounting. The -S magnet means you must upgrade your switches from CS1-M/DS1-M to CMSG/DMSG/EMSG. Remember the rear adjuster sets the end position but does not hold load without live air; use an external lock for hold.
For any stroke over 300mm, watch rod-bending side loads, though this 70mm stroke is safe.
Upgrade checklist
- ✓ Order the MBLJ20X70-20-S (same bore/stroke/adjust)
- ✓ Same 50–70 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 MBLJ20X70-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20-S FAQ
Yes, the MALJ20X70-20-S is discontinued. The direct replacement is the MBLJ20X70-20-S, which matches the 20mm bore, 70mm stroke, 20mm adjust code, and G1/8 port. You will need to upgrade your position sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -20 adjuster is a travel stop that lets you trim the rear end position, creating a usable 50-70mm stroke window. It does not hold the load without live air.
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Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X70-20-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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