Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 20mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 10–20mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke20 mm
- Adjustable10–20 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MBLCJ40X20-10
The AirTAC MBLCJ40X20-10 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. With a 40mm bore, it delivers 628N push and 528N pull force at 0.5 MPa. The 10mm adjuster trims the 20mm stroke, giving an exact usable travel window of 10-20mm. This is ideal for short, high-thrust moves where you need to dial in the end position and decelerate the load mechanically.
Unlike the standard MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable air cushioning to soften end-of-stroke impacts, protecting the end covers during faster cycles. The riveted rolling-packed barrel and 20um hard-chrome plated carbon-steel rod resist wear. Note that this specific SKU lacks a built-in magnet (-S), so it cannot accept CMSG, DMSG, or EMSG position sensors. The rear adjuster acts only as a mechanical travel stop and does not lock or hold the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 20 mm |
| Adjustable window | 10–20 mm (trim 10 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLCJ40X20-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10 Is Used
PCB Stacking Stops
Provides 628N of push to halt printed circuit boards on an assembly conveyor, using the 10-20mm stroke window to dial in exact stacking gaps without crushing the edges.
Capping Head Damping
Decelerates a high-speed capping head at the end of its 20mm travel, using the adjustable air cushion to prevent thread stripping on plastic bottle caps.
Short-Stroke Ejector
Ejects small machined aluminum brackets from a CNC fixture, relying on the 528N pull force to extract parts against friction within a confined 10-20mm window.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10 the Right Cylinder?
Choose this 40mm bore if you need 628N of push force at 0.5 MPa within a tight 10-20mm travel window. If your application requires less force, step down to the 32mm bore (402N push); if you need more power, step up to the 50mm bore (981N push). The MBLCJ is preferred over the MBLJ when you need tunable end-deceleration rather than a fixed bumper, and over the MBLC when you need that rear travel-stop adjustment. Remember, neither the cushion nor the adjuster acts as a lock to hold a load—external guides or locking devices are required for position holding.
For a direct replacement, match the 40mm bore, 20mm stroke, 10mm adjust code, G1/4 port, PT thread, and Basic mounting (no FA/LB code). This cylinder has no SDB pivot or back-cover options; mounting is limited to Basic, FA flange, or LB foot. Because the stroke is short, side-load risks on the Ø16mm rod are minimal, but external guidance is still recommended for offset loads.
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 MBLCJ40X20-10 FAQ
This 40mm bore cylinder uses a G1/4 port and a Ø16mm rod. At 0.5 MPa it provides 628N push and 528N pull force. At 0.7 MPa, push increases to 880N. The maximum theoretical force at 1.0 MPa is 128 kgf.
The adjustable stroke is a rear mechanical stop that lets you trim the travel window down to 10mm from the 20mm nominal stroke. The adjustable air cushion is a separate screw-tunable valve that controls deceleration at the stroke ends. Neither feature locks or holds the load; the cushion only slows the rod, and the stopper just sets the end position.
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
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X20-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.