Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 30mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 10–30mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke30 mm
- Adjustable10–30 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20
The AirTAC MBLCJ25X30-20 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. With a 25mm bore, it delivers 245N push and 206N pull at 0.5 MPa. The 20mm adjustment code lets you trim the rear travel, creating a usable 10-30mm stroke window for precise end-position tuning.
This model uses a PT threaded G1/8 port and a Ø10mm hard-chrome plated carbon steel rod. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal ensure durable, low-friction operation. Because this SKU lacks the -S magnet code, it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 30 mm |
| Adjustable window | 10–30 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×30 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 Is Used
PCB Drill Bed Indexing
Delivers 245N push to position a small PCB drill bed within the 10-30mm window, using the tunable cushion to soften end-of-stroke impact without bouncing the fixture.
Dispenser Valve Probing
Trims 20mm of rear travel for a precise low-force dispensing probe, relying on the 206N pull and adjustable air cushion to prevent needle damage on a micro-fluidic assembly line.
Wire Cutter Feeding
Feeds a solid-state wire cutter mechanism, where the compact riveted body fits tight cell layouts and the hard-chrome rod resists wear during rapid 30mm retraction cycles.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 the Right Cylinder?
If you need less force, step down to the 20mm bore (157N push @0.5 MPa); for higher loads, step up to the 32mm bore (402N push @0.5 MPa). Choose this MBLCJ over the MBLJ if your 10-30mm travel end needs screw-tunable deceleration rather than a fixed rubber bumper, or the MBLC if you prefer a fixed stroke. Remember the rear stopper sets travel length and the cushion only decelerates; neither holds the load. Mounting is limited to Basic, FA, or LB (no SDB or back cover). For a direct replacement, match bore 25, stroke 30, adjust 20, G1/8 port, PT thread, and no magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-20 FAQ
At 0.5 MPa it provides 245N push and 206N pull. At 0.7 MPa push is 343N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The 20mm rear adjuster acts as a travel stop, giving a usable 10-30mm stroke window. It is not a lock. The adjustable air cushion separately tunes end-of-stroke deceleration to protect the covers, but neither mechanism holds the load without live air.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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