Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 150mm nominal stroke and a rear adjustable-stroke stopper — trim up to 50mm for a usable window of 100–150mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke150 mm
- Adjustable100–150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S
The AirTAC MBLCJ25X150-50S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa. The -50S adjustment code allows you to trim up to 50 mm of travel at the rear, creating a usable stroke window of 100 to 150 mm. This tunable end-position travel is highly beneficial for applications requiring exact feeding distances.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model features screw-tunable air cushions that decelerate the piston near the stroke ends, absorbing kinetic energy to protect the end covers during faster cycling. The riveted rolling-packed barrel houses a heterogeneous two-way grease-retaining piston seal and a carbon-steel rod with 20 um hard-chrome plating. Fitted with a built-in magnet (-S), it supports AirTAC CMSG (reed), DMSG, and EMSG (solid-state) sensor switches for position detection. The standard PT thread and G1/8 port integrate seamlessly into existing pneumatic setups.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 100–150 mm (trim 50 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 MBLCJ25X150-50S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ25X150-50S Is Used
PCB Component Insertion
The 245 N push force and exact 100-150 mm stroke window provide the precise travel needed to press pin headers into circuit boards without cracking the substrate.
Textile Yarn Tensioning
Tunable end-of-stroke air cushions allow the piston to decelerate smoothly while guiding yarn carriers, preventing sudden snaps and maintaining consistent tension.
Small Parts Ejection
The 343 N push force at 0.7 MPa delivers reliable ejection of molded plastic parts from small cavities, while the magnet enables cycle counting via a DMSG sensor.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-50S the Right Cylinder?
When sizing this bore, consider stepping down to the 20 mm version (157 N push @0.5 MPa) for lighter loads, or up to the 32 mm bore (402 N push @0.5 MPa) if your payload requires greater thrust. Choose the MBLCJ over the MBLJ when your cycle speeds demand tunable deceleration rather than a fixed bumper, or over the MBLC if you need custom end-positioning rather than a fixed stroke. Keep in mind the rear stopper sets the travel end but does not hold the load, and the air cushion only decelerates; neither acts as a lock, so external holding mechanisms are needed for position retention under load.
Mounting is limited to Basic, FA (flange), or LB (foot) styles; there is no SDB pivot or back-cover option available. The overall length equals A + 2 x stroke + adjust, meaning this 150 mm stroke with a 50 mm adjuster yields a longer physical footprint. For an exact replacement, match the 25 mm bore, 150 mm stroke, 50 mm adjust code, G1/8 port, PT thread, FA/LB mounting, and the -S magnet. Because the stroke is 150 mm, the 10 mm rod is susceptible to bending under side loads, requiring an external guide to prevent premature seal wear.
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 MBLCJ25X150-50S FAQ
At 0.5 MPa, it provides 245 N push and 206 N pull force. At 0.7 MPa, the push force is 343 N, with a theoretical maximum of 50 kgf at 1.0 MPa. The -50S adjuster allows trimming up to 50 mm of rear travel, creating a usable stroke window of 100 to 150 mm.
The adjustable stroke is a rear travel stopper that physically limits the end position within the 100-150 mm window, but it does not lock or hold the load. The adjustable air cushion is a screw-tunable deceleration mechanism that slows the piston near the end covers to prevent impact damage, functioning separately from the stroke stopper.
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