Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S
The AirTAC Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S 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 10mm for a usable window of 115–125mm. Fixed rubber bumper.
- BoreØ25 mm
- Stroke125 mm
- Adjustable115–125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed rubber bumper
- 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 MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S
The AirTAC MBLJ25X125-10S is a double-acting, single-rod aluminum mini cylinder featuring a rear travel stopper that lets you trim up to 10 mm off the stroke. This creates a precise 115-125 mm usable end-position window, allowing you to fine-tune machine timing during commissioning or product changeovers without adding external physical stops. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa, making it well-suited for medium-duty positioning and ejection tasks over a 125 mm travel distance.
This SKU includes a built-in magnet (-S) for compatibility with AirTAC CMSG reed switches, as well as DMSG and EMSG solid-state electronic sensors, enabling precise end-of-stroke detection. The riveted rolling-packed aluminum barrel pairs with a heterogeneous two-way grease-retaining piston seal to maintain lubrication over millions of cycles. End impact is absorbed by a fixed rubber bumper. Keep in mind the rear stopper only sets the travel limit; it does not function as a mechanical lock to hold a load without continuous air pressure.
Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S Technical Specifications
| Model | Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 115–125 mm (trim 10 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 | Fixed rubber bumper |
| 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 MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S
| MBLJ | MBLJ aluminum-barrel adjustable-stroke mini cylinder. |
|---|---|
| 25 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -10 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLCJ (adjustable stroke, adjustable cushion), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S Is Used
Packaging Conveyor Diverter
Fine-tune the 115-125 mm pusher stroke to match varying carton widths on a packaging line without swapping out the entire cylinder assembly.
PCB Router Pin Ejector
Uses the 245 N push force at 0.5 MPa to knock routed circuit boards free from a fixture, with the rear stopper allowing 10 mm of timing adjustment.
Sensor-Verified Clamping
Leverages the -S magnet with a DMSG solid-state switch to confirm a 125 mm clamping position on small electronic housings before a press cycle.
Is the Airtac MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S the Right Cylinder?
If you need slightly less force, stepping down to the 20 mm bore yields 157 N of push at 0.5 MPa, whereas stepping up to the 32 mm bore provides 402 N for heavier resistance. This MBLJ variant is ideal when you need on-the-fly end-position tweaking; if the stroke is fixed and never changes, a standard MBL cylinder saves length, while an MBLCJ adds an adjustable air cushion for heavier masses. Remember that this MBLJ25X125-10S has a 125 mm stroke, which is well within the 300 mm maximum for this bore, but at this length the 10 mm rod is highly susceptible to side-loading—always use an external guide rail to prevent rod bending and seal damage.
For a direct replacement, match the 25 mm bore, 125 mm stroke, 10 mm adjust code, G1/8 port, PT thread, and the -S magnet. Mounting is limited to Basic, FA (flange), or LB (foot); there is no SDB pivot or back-cover option available. The overall length is longer than a plain MBL due to the rear adjuster mechanism.
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 MBLJ Adjustable Aluminum Alloy Mini Cylinder MBLJ25X125-10S FAQ
At 0.5 MPa, the 25 mm bore provides 245 N of push force and 206 N of pull force. At 0.7 MPa, push increases to 343 N. The theoretical maximum is 50 kgf at 1.0 MPa. It operates on filtered air at 0.15-1.0 MPa with a speed range of 30-800 mm/s.
The rear stopper allows you to trim the stroke by up to 10 mm, creating a usable end-position window of 115 to 125 mm. The adjuster is strictly a travel stop that sets the end position; it does not lock or hold the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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