BION

PC-1A

Water-ready
polycentric knee

A lightweight locking knee for water and everyday use.

Explore PC-1A
Lightweight BION PC-1A polycentric knee
480 gmodule weight
125 kguser weight
76 mmbuild height
Discover more

Locking
mechanism.

For water.

A polycentric design with a locking mechanism to hold its position in water.

Adjustable lock engagement resistance.

up to 135°flexion angle

Compact.
Considered
in every detail.

A build height of 76 mm for fitting where space is limited.

Dampers absorb impacts during walking and when kneeling.

An added soft layer improves stability and protects clothing when resting on a bent knee.

Every detail.
In precise numbers.

Specifications of the lightweight knee module BION PC-1A.

Module weight
480 g
User weight
up to 125 kg
Build height
76 mm
Flexion angle
up to 135°
Load rating
R6 / ISO 10328
Temperature
−40…+40 °C
Service life
2 years
PC-1A knee technical drawing
View drawing

More about
PC-1A.

Answers to common questions about the design and specifications.

What is PC-1A designed for?

PC-1A is a polycentric locking knee designed for water and everyday use.

What makes it compact?

The build height is 76 mm and the lightweight version weighs 480 g. This geometry allows the module to fit where space is limited.

What do the dampers do?

Dampers absorb impacts during walking and when kneeling.

An added soft layer improves stability and protects clothing when resting on a bent knee.

Where can I see the design?

Two videos show the mechanism in motion and the module held in a hand. The specifications section includes a full-size technical drawing.