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Ball Plunger Switch [BP]

Φ4mm
The world's smallest
Ball Plunger Switch

Able to provide identifying and positioning functions using notches on index rotating or sliding objects as well as output a confirmation signal.

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Ball Plunger Switch

A Positioning Switch built into the Ball Plunger

2 in 1
A Positioning Switch built into the Ball Plunger

This stunner performs two roles in one, with a precision positioning switch incorporated in a ball plunger.
Reduces the number of components and design manhours, allowing miniaturization of the machine.

Related Applications

Detected the starting point of the stepper motor

The client is an engineer with a major semiconductor manufacturer. He consulted us on "positioning" of the automatic XY stepper stage. More >

Realize positioning of glass substrate on conveyor

The client is a production engineer with a maker of semiconductor equipments. He consulted us on “positioning” of the glass substrate on the conveyor. More >

The precision switch included in a ball plunger miniaturizes the equipment

The client is a manufacturer of assembling equipments for automobiles. A representative of the design department inquired us about "indexing " using a ball plunger. More >

A replacement of the optical fiber sensors reduced sensor set-up time significantly

A bearing manufacturer that produces ball transfers. A representative of the design department of conveyor systems inquired us about the positioing of conveyed objects. The "Optical fiber sensors" have been used for positioning objects on the conveyor, but it took a lot of time for sensor setting. More >

Product Lineup

  Product No. Mounting
size		 Stroke Contact angle LED
lamp		 Download Price Order
Catalog CAD
BP4SWA BP4SWA φ4mm 0.8mm Sliding touch

 No LED PDF 2D / 3D 8640 JPY

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BP5MWA BP5MWA M5mm 1mm Sliding touch No LED PDF 2D / 3D 8100 JPY

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Specification

Switch structure Dry contact
Output mode A: NO (Normally Open)
Repeatability 0.01mm (Range / Axial direction)
(At operating speed 50-200mm/min)
Pretravel 0.3mm
Protective structure IP40
Contact force 1N (Axial direction)
Contact life time BP4SWA: 1 million
BP5MWA: 3 million
Movement differential 0
Temperature drift 0 (Because of no amplifier)
Case material SUS 303
Contact material Tungsten carbide
Cable Core-wire cable
0.5m×2 Oil resistant φ0.66,
Tensile strength 15N, AWG30
Oscillation 10-55Hz total amplitude 1.5
for X, Y, Z each direction
Impact 300m/s² for X, Y, Z each direction
Operating temperature range 0℃-80℃ (Ice-free)
Contact rating DC5V-DC24V
Steady current : 10 mA or less
(Rush current: 20 mA or less)
Standard accessory BP5MWA : Two fixing nuts
Circuit diagram Circuit diagram

The Pride of Japan Technology

Φ4 World's Smallest Size.

[History of Development]
A Positioning Switch built into the Ball Plunger

Φ4 World's Smallest Size.
Every engineer who picks up the ball plunger switch [BP4S] wants to know "Will it really work?" 
That's how incredibly compact it is.

This stunner performs two roles in one, with a precision positioning switch incorporated in a ball plunger...

Read More >

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