Airtac PB Pen-type Cylinder PB4X5
The AirTAC Airtac PB Pen-type Cylinder PB4X5 is a double-acting pen-size (mini) air cylinder with a Ø4mm bore and 5mm stroke. Its slim round barrel and back cover are stainless steel, the M3×0.5 (tube) ports keep plumbing compact, and the fast, low-friction piston suits high-cycle small-part handling.
- BoreØ4 mm
- Stroke5 mm
- Port sizeM3×0.5 (tube)
- Acting typeDouble acting
- Rod threadM4×0.7
- CushionNo cushion
- 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 PB Pen-type Cylinder PB4X5
The AirTAC PB4X5 is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency small-part motion. It delivers 6.3 N of push force and 4.7 N of pull force at 0.5 MPa, making it suitable for delicate positioning tasks. The slim round body incorporates a bronze barrel paired with a stainless steel piston rod, offering reliable durability in damp or mildly corrosive environments without adding unnecessary bulk to your end-of-arm tooling.
Designed for tight jigs, this 4 mm bore model features a 2 mm rod, an M4x0.7 rod-end thread, and a small M3x0.5 tube fitting for the air port. It operates at speeds between 50-500 mm/s with a maximum pressure of 0.7 MPa. Note that this specific bore size has no end cushion or bumper, so external deceleration should be considered for higher energy loads.
Airtac PB Pen-type Cylinder PB4X5 Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB4X5 |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø4 mm |
| Rod diameter | Ø2 mm |
| Stroke | 5 mm |
| Acting type | Double acting |
| Port size | M3×0.5 (tube) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | No cushion |
| Max standard stroke | Up to 20 mm |
Specifications follow the official AirTAC PB pen-size datasheet. Piston rod and barrel are stainless steel. Confirm bore, stroke and back-cover option against the product label before installation.
Theoretical Output Force (Ø4mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6.3 N | 4.7 N |
| 0.7 MPa (max) | 8.8 N | 6.6 N |
Values are taken from the AirTAC PB thrust table. Because pull acts on the rod-side annular area, pull force is always lower than push. Actual usable force is reduced by friction — size with a margin.
Model Code: Airtac PB Pen-type Cylinder PB4X5
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 4 | Bore size in mm. |
| ×5 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| CB / U / R | Back cover: CB double clevis, U 90° side inlet, R axial inlet (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PSB (single-acting push), PTB (single-acting pull), PBD (double rod), PBJ (adjustable stroke), PBR (front-mount).
Where the Airtac PB Pen-type Cylinder PB4X5 Is Used
Micro-clip insertion
Drives a 2 mm rod to push delicate electronic clips into PCB sockets without damaging surrounding components.
Lab sample sorting
Indexes tiny vials on a diagnostic carousel where a 4 N push force is sufficient to actuate a routing gate.
Fiber-optic routing
Pivots small guide arms to switch optical fiber paths in telecommunications test fixtures.
Is the Airtac PB Pen-type Cylinder PB4X5 the Right Cylinder?
When sizing this actuator, stepping up to the 6 mm bore version is the primary option, which increases the 0.5 MPa push force to 14.2 N if you need more authority.
Keep in mind that a plain double-acting cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift, requiring an external stop or rod lock for fail-safe holding. Because the 2 mm rod is highly slender, it is built strictly for coaxial thrust—avoid side loads and add an external linear bearing if the stroke demands guidance. Confirm your ordering essentials: 4 mm bore, 5 mm stroke, M3x0.5 tube fitting, no magnet, and standard axial inlet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Slim pen body vs. a standard round cylinder
- ✓ Back cover: CB / U / R inlet direction
- ✓ Magnet (S) for sensors?
- ✓ Mounting: LB / FA / CJ or front thread
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 0.7 MPa operating pressure.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
- check Fit dust caps to ports during long-term storage.
- check Installation by qualified personnel per AirTAC docs.
Airtac PB Pen-type Cylinder PB4X5 FAQ
The PB4X5 generates a push force of 6.3 N and a pull force of 4.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push force is 8.8 N and the pull force is 6.6 N. It operates between 0.2-0.7 MPa at speeds of 50-500 mm/s.
No, the 4 mm bore size has no end cushion or bumper, so external shock absorption may be required for high-speed moves. Additionally, this specific model does not include a sensor magnet, meaning it cannot directly mount AirTAC reed or electronic switches for position detection.
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 PB Pen-Size Cylinders
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