Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 125mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 95–125mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke125 mm
- Adjustable95–125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30
The AirTAC MBLCJ25X125-30 is a compact double-acting mini cylinder featuring a rear stroke adjuster and tunable air cushioning at both ends. It delivers 245 N push and 206 N pull force at 0.5 MPa. The rear stopper trims up to 30 mm of travel, creating a usable stroke window of 95 to 125 mm to dial in exact end positions. A G1/8 port and Ø10 mm hard-chrome rod handle the pneumatic flow and lateral guidance.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion on this unit decelerates heavier loads at high speeds to protect the end covers. The riveted aluminum barrel keeps the body light for tight machine spaces. Note that this specific SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors. The rear adjuster sets the travel end but does not mechanically lock the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 95–125 mm (trim 30 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 MBLCJ25X125-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ25X125-30 Is Used
Textile Loom Reversing
Handles the rapid reversing stroke of a loom rapier head, using the 95-125 mm window to time the thread feed accurately while the air cushion absorbs the high-speed impact.
Bottle Capper Press
Applies 245 N of force to seal plastic beverage caps, with the 30 mm rear adjuster allowing quick depth changes for different bottle heights without swapping cylinders.
PCB Depaneling Saw
Feeds a circular blade through routed circuit boards, relying on the tunable end cushioning to prevent sudden stops that could crack the fragile fiberglass substrate.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-30 the Right Cylinder?
Choose this 25 mm bore if your application requires 245 N push at 0.5 MPa. If you need less force, step down to the 20 mm bore offering 157 N; if your payload is heavier, step up to the 32 mm bore providing 402 N. This model replaces the MBLJ by adding tunable air cushions for smoother stops, and differs from the MBLC by offering the 30 mm rear travel adjuster.
When ordering a replacement, verify the 25 mm bore, 125 mm nominal stroke, 30 mm adjust code, G1/8 PT thread, and basic mounting style. Because this SKU lacks the -S magnet code, it cannot host a reed or solid-state sensor switch. Remember the cushion needle only controls deceleration speed, and the rear stopper only sets the travel end; neither component will hold a load statically without live air pressure. Mounting is limited to Basic, FA, or LB styles as no back-cover or SDB pivot is available.
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 MBLCJ25X125-30 FAQ
At 0.5 MPa it provides 245 N push and 206 N pull force, increasing to 343 N push at 0.7 MPa, with a maximum theoretical output of 50 kgf at 1.0 MPa. The 30 mm rear adjuster allows you to trim the 125 mm nominal stroke down to a 95 mm minimum, giving an exact usable window of 95-125 mm.
Because this SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG position sensors. The rear adjuster acts only as a travel stop to set the end position, and the adjustable air cushion only controls deceleration; neither component mechanically locks or holds the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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