Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm 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).
- BoreØ20 mm
- Stroke25 mm
- Adjustable5–25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- 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 MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20
The AirTAC MBLCJ20X25-20 is a compact double-acting aluminum mini cylinder featuring a rear adjustable stroke and an adjustable air cushion at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The rear travel stopper allows you to trim up to 20 mm of movement, creating a usable stroke window of 5 to 25 mm for precise positioning.
Unlike the fixed rubber bumper found on the base MBLJ, the screw-tunable air cushion on this SKU decelerates the rod near the stroke ends to absorb kinetic energy and protect the end covers. The riveted rolling-packed barrel and 20 um hard-chrome plated carbon-steel rod provide durable service in tight spaces. Because this configuration lacks the -S magnet code, it cannot host a CMSG or DMSG position sensor switch.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 25 mm |
| Adjustable window | 5–25 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 MBLCJ20X25-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | 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 MBLCJ20X25-20 Is Used
PCB Router Damping
With 157 N of push force and a 5 to 25 mm stroke window, this cylinder provides screw-tunable air cushioning to decelerate a pneumatic PCB routing head at the end of its cut path without crashing.
Micro-Dispenser Positioning
The 20 mm adjustable stroke stopper allows precise volumetric dispensing valve positioning for micro-electronic solder paste application, relying on the cushion to soften the extend impact.
Thin Film Edge Guide
Ideal for guiding delicate polymer films in packaging machines, the 8 mm hard-chrome rod and tunable cushioning prevent tearing when the web reaches its 25 mm travel limit.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X25-20 the Right Cylinder?
If you need less force, the larger 25 mm bore offers 245 N push at 0.5 MPa; if you need more, there is no smaller standard MBLCJ bore than this 20 mm unit. Choose the MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration rather than a fixed bumper, or over the MBLC when you need to trim the travel window rather than using a fixed length. Remember that the rear stopper sets the travel end and the cushion only decelerates; neither holds the load, so external locking is required for position holding. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. To match this replacement exactly, verify bore 20, stroke 25, adjust 20, G1/8 port, PT thread, and no magnet.
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 MBLCJ20X25-20 FAQ
This 20 mm bore double-acting cylinder provides 157 N push and 132 N pull at 0.5 MPa, 220 N push at 0.7 MPa, and a maximum theoretical output of 32 kgf at 1.0 MPa.
The rear adjustable stroke is a mechanical travel stopper that limits the rod extension window to 5-25 mm, while the adjustable air cushion uses a screw valve to tune end-of-stroke deceleration speed. Neither feature locks or holds 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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