Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 80mm nominal stroke and a rear adjustable-stroke stopper — trim up to 75mm for a usable window of 5–80mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke80 mm
- Adjustable5–80 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S
The AirTAC MBLCJ20X80-75S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. With an 80mm nominal stroke and a 75mm rear trim, you get a highly versatile usable stroke window of 5-80mm. Delivering 157N of push force at 0.5 MPa, it suits precise positioning tasks. The -S code denotes a built-in magnet for compatibility with CMSG reed and DMSG or EMSG solid-state sensor switches.
This model replaces fixed rubber bumpers with screw-tunable end-of-stroke deceleration, absorbing kinetic energy to protect the end covers during faster moves. The riveted rolling-packed barrel and 20-micron hard-chrome plated carbon-steel rod provide durable service. Remember that the rear stopper sets the travel end but does not lock the load; the cushion only decelerates. Neither will hold position without live air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 5–80 mm (trim 75 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 MBLCJ20X80-75S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×80 | Nominal stroke length in mm. |
| -75 | 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 MBLCJ20X80-75S Is Used
PCB Depaneling Saw
Uses the 5-80mm stroke window to dial in the exact cutting depth for a depaneling router, while the air cushion protects the 8mm rod from snapping during rapid blade plunges.
Micro Dispenser Probe
The 157N push force accurately seats a dispensing needle against a substrate, using the rear stopper to prevent over-travel and the cushion for soft contact.
Textile Yarn Guide
Adjusts a thread tensioning gate across a 5-80mm range; the tunable cushion ensures the lightweight 8mm rod does not bounce when reaching the set end position.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-75S the Right Cylinder?
For lower force needs, stepping down to the 12mm bore (if available) or a smaller frame reduces footprint, but stepping up to the 25mm bore yields 245N push force at 0.5 MPa for heavier resistance. Choose MBLCJ over the MBLJ when your application requires tunable end-of-stroke cushioning rather than a fixed bumper, or over the MBLC if you need the rear travel adjuster. The overall length equals A + 2 x 80 + 75mm, making it longer than a fixed-stroke unit.
The rear adjuster is a travel stop, not a mechanical lock; an external guide or locking device is required for load holding. Mounting is limited to Basic, FA flange, or LB foot styles—this series offers no SDB pivot or back-cover options. The default PT tapered thread connects via the G1/8 port. For exact replacement matching, verify the 20mm bore, 80mm stroke, 75mm adjust code, PT thread, and the -S 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 MBLCJ20X80-75S FAQ
At 0.5 MPa, this 20mm bore cylinder provides 157N push and 132N pull force. At 0.7 MPa, the push force is 220N. The maximum theoretical force is 32 kgf at 1.0 MPa.
The 75mm adjustable stroke is a mechanical rear stopper that trims your usable travel window down to 5-80mm. The adjustable air cushion is a screw-tunable valve that controls end-of-stroke deceleration. Neither holds the load in place; both require live air to function.
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 MBLCJ20X80-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.