Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 250mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 230–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable230–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S
The AirTAC MBLCJ25X250-20S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. You can trim up to 20 mm of travel at the rear, creating a precise 230-250 mm usable stroke window. Delivering 245 N of push force at 0.5 MPa, this unit is built for longer travel ranges where controlled deceleration is critical.
Unlike the standard MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable pneumatic cushioning to absorb kinetic energy at the stroke extremes. The riveted rolling-packed barrel and 20 um hard-chrome plated carbon-steel rod ensure durability. The built-in magnet (-S) allows for direct mounting of CMSG reed or DMSG and EMSG solid-state sensor switches to detect piston position.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 230–250 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 MBLCJ25X250-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MBLCJ25X250-20S Is Used
PCB Edge Conveyor Transfer
Pushes populated boards along a 250 mm transfer path, using the 230-250 mm stroke window to dial in exact handoff positions and the air cushion to prevent sudden jolts.
Textile Yarn Guide Traversal
Cycles continuously across a 250 mm winding width; the adjustable rear stopper fine-tunes the reversal point while the cushioning protects the end covers at high speed.
Diagnostic Cartridge Shuttle
Moves fluidic cartridges into a testing bay with 245 N of force, relying on the DMSG electronic sensor to confirm extension and the tunable cushion for gentle deceleration.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-20S the Right Cylinder?
Step down to the Ø20 bore if your load requires less than 157 N of push force at 0.5 MPa, or step up to the Ø32 bore (402 N push) for heavier payloads. Choose this MBLCJ over the MBLJ when your 250 mm travel speed demands adjustable end-of-stroke deceleration rather than a fixed bumper. To replace this unit exactly, match the 25 mm bore, 250 mm stroke, 20 mm adjust code, G1/8 port, M10x1.25 rod thread, PT thread form, and the -S magnet.
Because the stroke is 250 mm on a Ø10 mm rod, external guidance is recommended to prevent side-load bending. The rear adjuster sets the travel end point but does not lock the load, and the air cushion only decelerates; an external holding mechanism is required for position locking. Mounting is limited to Basic, FA flange, or LB foot styles, as no SDB pivot or back-cover options exist for this series.
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 MBLCJ25X250-20S FAQ
At 0.5 MPa, the push force is 245 N and the pull force is 206 N. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The adjustable stroke uses a rear screw to physically limit the travel window to 230-250 mm, acting as a hard stop. The adjustable air cushion uses needle valves at both ends to tune the pneumatic deceleration rate. Neither feature locks the load in place.
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 MBLCJ25X250-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.