This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X175-30, 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 MALJ40 Adjustable Mini Cylinder MALJ40X175-30
The AirTAC MALJ40 Adjustable Mini Cylinder MALJ40X175-30 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 145 to 175 mm. This model is discontinued — the direct replacement is the MBLJ40X175-30.
- BoreØ40 mm
- Stroke175 mm
- Adjust window145–175 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X175-30
- 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 MALJ40 Adjustable Mini Cylinder MALJ40X175-30
The AirTAC MALJ40X175-30 is a discontinued 40mm bore, double-acting double-rod mini cylinder with a 175mm stroke and a 30mm rear travel stop. It gives a usable end-position window of 145-175mm so you can dial in the reach without adding external stops. The direct replacement is the MBLJ40X175-30, matching the bore, stroke, adjuster, G1/4 port and mounting.
Two upgrade details stand out. First, the MALJ uses threaded covers and an older -S magnet design (CS1-M/DS1-M), while the MBLJ replacement uses a riveted rolling-packed body and CMSG/DMSG/EMSG sensors. This specific SKU has no -S magnet, so it cannot take a position sensor. Second, the rear adjuster is strictly a travel stop that sets the end position; it does not hold a load without live air pressure. The fixed rubber bumper softens the end impact, but you must add an external lock for any held-load requirement.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X175-30 |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Adjustable window | 145 – 175 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 MBLJ40X175-30 carries the same ratings.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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 MBLJ40X175-30 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×175 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 145–175 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 MALJ40 Adjustable Mini Cylinder MALJ40X175-30 Is Used
Aluminum Extrusion Cut-off
Trims the saw stroke down from 175mm to 155mm on an aluminum profile cutoff saw, ensuring the 16mm rod retracts fully clear of the carbide blade without adding bulky external spacers.
Pallet Wrap Head Index
Positions a stretch-wrap film carriage on a palletizer within a 145-175mm window, relying on the 528N pull force to lift the carriage and the rubber bumper to soften the rapid up-stroke impact.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-30 with MBLJ40X175-30
To replace the MALJ40X175-30, order the exact direct replacement MBLJ40X175-30. Confirm the 40mm bore, 175mm stroke, 30mm adjust code, G1/4 port, PT threads, and FA/LB mounting (the series uses no back cover and no SDB). Because this SKU lacks the -S magnet, it cannot accept a sensor; if you need position sensing on the MBLJ, add the -S code and use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. Remember the adjuster is a stop, not a lock.
For a 175mm stroke, watch rod side-load and bending moments on the 16mm rod; use a guide rail to prevent binding.
Upgrade checklist
- ✓ Order the MBLJ40X175-30 (same bore/stroke/adjust)
- ✓ Same 145–175 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 MBLJ40X175-30 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X175-30 FAQ
Yes, the MALJ40X175-30 is discontinued. The direct replacement is the MBLJ40X175-30, which matches the 40mm bore, 175mm stroke, 30mm adjust code, G1/4 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design, but the force and dimensions remain identical.
The 30mm rear adjuster lets you trim the 175mm stroke down to a 145mm minimum, giving a usable 145-175mm window. The adjuster is a travel stop only and does not hold load without air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X175-30 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 MALJ40 Adjustable Mini Cylinder MALJ40X175-30 → MBLJ40X175-30)
Tell us the quantity and destination — we quote the direct MBLJ40X175-30 replacement with price, stock and lead time, usually within 7-8 hours.