This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X175-40, 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 MALJ20X175-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 135 to 175 mm. This model is discontinued — the direct replacement is the MBLJ20X175-40.
- BoreØ20 mm
- Stroke175 mm
- Adjust window135–175 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X175-40
- 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 MALJ20X175-40
The AirTAC MALJ20X175-40 is a discontinued double-acting mini cylinder with a rear travel stop. It trims up to 40 mm at the rear, yielding a usable 135-175 mm end-position window. The 20 mm bore pushes 157 N and pulls 132 N at 0.5 MPa. It uses a fixed rubber bumper and has no magnet, so it cannot take a position sensor.
The direct replacement is the MBLJ20X175-40. It keeps the same G1/8 port, M8x1.25 rod thread, and 32 kgf max force. The upgrade shifts from threaded covers to a riveted rolling-packed body. The rear adjuster sets reach but does not hold load without live air.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X175-40 |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Adjustable window | 135 – 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 MBLJ20X175-40 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 MBLJ20X175-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×175 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 135–175 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 MALJ20X175-40 Is Used
Filament Winder Tension Arm
Dials the rear stop to tune the 135-175 mm reach for a fiber payout arm, ensuring the 20 mm bore maintains steady tension without needing live air to hold position.
Micro-Dispense Valve Probe
Sets a fixed 150 mm down-stroke for a fluid nozzle contact, relying on the fixed rubber bumper to soften the end impact before the 32 kgf max force triggers dosing.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40 with MBLJ20X175-40
Replace this MALJ20X175-40 with the exact MBLJ20X175-40 direct. Confirm the 20 mm bore, 175 mm stroke, 40 mm adjust code, G1/8 port, and FA/LB mounting (there is no back-cover or SDB option). Because this SKU lacks the -S magnet, it cannot accept a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if you need detection. The adjuster is a travel stop, not a lock.
At 175 mm stroke, watch rod-to-side-load bending; use a guide to prevent binding.
Upgrade checklist
- ✓ Order the MBLJ20X175-40 (same bore/stroke/adjust)
- ✓ Same 135–175 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 MBLJ20X175-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-40 FAQ
Yes, the MALJ20X175-40 is discontinued. The direct replacement is the MBLJ20X175-40, which matches the 20 mm bore, 175 mm stroke, 40 mm adjust code, G1/8 port, and 32 kgf max force. The MBLJ upgrades the body to a riveted rolling-packed design.
The -40 adjust code lets you trim up to 40 mm at the rear, giving a usable stroke window of 135-175 mm.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X175-40 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 MALJ20X175-40 → MBLJ20X175-40)
Tell us the quantity and destination — we quote the direct MBLJ20X175-40 replacement with price, stock and lead time, usually within 7-8 hours.