This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X275-100-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 MALJ20X275-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 175 to 275 mm. This model is discontinued — the direct replacement is the MBLJ20X275-100-S.
- BoreØ20 mm
- Stroke275 mm
- Adjust window175–275 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X275-100-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 MALJ20X275-100-S
The AirTAC MALJ20X275-100-S is a discontinued double-acting mini cylinder with a 100mm rear adjustable stroke stopper. The direct replacement is the MBLJ20X275-100-S, matching the G1/8 port, M8x1.25 rod thread, and 32kgf max force.
This -S magnet SKU originally works with CS1-M/DS1-M switches, while the MBLJ upgrade transitions to CMSG/DMSG/EMSG sensors. The MALJ uses threaded covers and a heterogeneous grease-retaining seal, whereas the MBLJ features a riveted rolling-packed body. At 275mm of stroke on an 8mm rod, the cylinder is highly susceptible to rod-bending under side loads, so rigid guidance is critical. The fixed rubber bumper softens end impact, but the rear adjuster is strictly a travel stop, not a mechanical lock.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X275-100-S |
| Bore size | Ø20 mm |
| Stroke | 275 mm |
| Adjustable window | 175 – 275 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 MBLJ20X275-100-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 MBLJ20X275-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×275 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 175–275 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 MALJ20X275-100-S Is Used
Thin-Wall Tube Profiler
Trims the return position up to 100mm to prevent collet crashes during changeovers, while relying on the fixed rubber bumper to absorb the 132N pull impact.
Label Applicator Head
Fine-tunes the 275mm extension reach to apply labels precisely on varying box widths, using the CS1-M magnet switch to confirm the adjusted end position.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S with MBLJ20X275-100-S
To replace the MALJ20X275-100-S, order the exact direct replacement MBLJ20X275-100-S. Confirm the 20mm bore, 275mm stroke, 100mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet means you must upgrade your sensors from the older CS1-M/DS1-M family to the MBLJ's CMSG/DMSG/EMSG switches. The rear adjuster sets the end position but will not hold a load without live air; add an external lock for holding. Because stroke is 275mm on an 8mm rod, use rigid external guidance to prevent rod-bending.
If you need to step down, the 20mm bore is the smallest available MALJ size, so you must reduce the bore to step down.
Upgrade checklist
- ✓ Order the MBLJ20X275-100-S (same bore/stroke/adjust)
- ✓ Same 175–275 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 MBLJ20X275-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X275-100-S FAQ
Yes, the MALJ20X275-100-S is discontinued. The direct replacement is the MBLJ20X275-100-S, which matches the 20mm bore, 275mm stroke, 100mm adjuster, G1/8 port, and 32kgf max force. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 100mm rear adjuster lets you trim the end position, creating a usable stroke window of 175-275mm. The adjuster is a travel stop, not a lock, and cannot hold a load without live air.
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Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X275-100-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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