Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 25mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 5–25mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke25 mm
- Adjustable5–25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S
The AirTAC MBLCJ25X25-20S is a compact double-acting aluminum mini cylinder engineered for precise motion control in tight spaces. It features a rear stroke adjuster allowing you to trim up to 20 mm of travel, creating a usable 5-25 mm end-position window. Delivering 245 N push force at 0.5 MPa, it is paired with an adjustable air cushion at both ends to tune deceleration, preventing end-cover impact during fast moves. This model includes a built-in magnet (-S) for compatibility with CMSG reed and DMSG or EMSG solid-state sensor switches.
The adjustable air cushion differs entirely from the rear travel stopper: the cushion screws tune end-of-stroke deceleration for heavier or faster loads, while the stopper simply sets the physical travel end. Neither mechanism locks the load in place; the rod drifts without live air pressure. The riveted rolling-packed aluminum barrel and 20 µm hard-chrome plated carbon-steel rod provide durable, low-friction operation, and the heterogeneous two-way grease-retaining piston seal ensures long-term lubrication.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 25 mm |
| Adjustable window | 5–25 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 MBLCJ25X25-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 MBLCJ25X25-20S Is Used
PCB Edge-Guides
Adjusts conveyor edge guides for varying board widths, using the 5-25 mm stroke window for micro-trimming while the cushion absorbs rapid retraction impacts.
Dispenser Nozzle Height
Sets precise nozzle heights on adhesive dispensers; the 245 N push force securely lowers the head, while the cushion prevents fluid splashing at stroke end.
Small Parts Ejector
Pushes stamped micro-parts out of a die, relying on the tunable air cushion to silently stop the rod before it strikes the front cover.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S the Right Cylinder?
Choose this 25 mm bore when you need 245 N push (206 N pull) at 0.5 MPa within a highly restricted stroke envelope. If your application requires less force, step down to the 20 mm bore (157 N push), or step up to the 32 mm bore (402 N push) for heavier payloads. The MBLCJ is preferred over the MBLJ when kinetic energy exceeds what a fixed rubber bumper can absorb, as the screw-tunable cushioning here actively protects the end covers. Unlike the MBLC which has a fixed stroke, this MBLCJ allows 20 mm of rear travel trimming.
For replacements, match the 25 mm bore, 25 mm nominal stroke, 20 mm adjust code, G1/8 port, default 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. Because the overall length equals A + 2 x stroke + adjust, verify your spatial envelope. The adjuster and cushion decelerate but do not hold position; use an external locking device for static load holding.
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 MBLCJ25X25-20S FAQ
At 0.5 MPa, this 25 mm bore double-acting cylinder provides 245 N push and 206 N pull force. At 0.7 MPa, push increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The rear adjuster physically stops the piston, allowing you to trim travel within a 5-25 mm window. The adjustable air cushion screw-tunes deceleration near the stroke ends to protect the covers. Neither holds the load; the rod drifts without live air pressure.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.