B-421 BIX Miniature Linear Stage

Novità

Positioners for Small Dimensions, High Resolution, and a Favorable Price

Up to 45 mm length and 11 mm in height, 13 mm to 33 mm travel range
Direct position measurement with incremental encoder with up to 6 nm resolution
Minimum incremental motion from 10 nm
Maximum drive force of 2.5 N
Endurance of 50 km
Easily stackable for multi-axis combinations

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B-421.x31, dimensions in mm. Note that a comma is used in the drawings instead of a decimal point.

XY assembly consisting of two B-421.131 with B-421.AP1 adapter plate

Application fields

Super-resolution microscopy (e.g., TIRF, STORM)
Light Sheet Microscopy (e.g., Grid Light Sheet)
Microassembly
Photonics
Optical alignment
Beamline instrumentation
Semiconductor technology
Mobile measuring technology devices (e.g., spectroscopy, interferometry)

Bi-phase inertia drive technology

Piezo inertia drives are space-saving and affordable piezo-based drives with relatively high holding forces and a virtually unlimited travel range. The inertia drive principle is based on two piezoelectric actuators that are controlled with a modified sawtooth voltage provided by special drive electronics. The actuators expand slowly and move the runner.

Due to its inertia, the runner is unable to follow the subsequent fast contraction of the actuators, and remains in its position. A symmetrical motor setup guarantees consistent drive characteristics in positive and negative directions of motion.

The drives acting directly on the runner achieve velocities of max. 14 mm/s with an operating frequency of up to 20 kHz.

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Datasheet

Versione / Data

2025-12-17

pdf - 837 KB

Versione / Data

2025-12-17

pdf - 852 KB

Download

Select a travel range:

Motion	B-421.131	B-421.231	B-421.331	Tolerance
Active axes	X	X	X
Travel range in X	13 mm	23 mm	33 mm
Maximum velocity in X, unloaded	14 mm/s	14 mm/s	14 mm/s	typ.
Linearity in X	2.5 µm	2.5 µm	2.5 µm	typ.
Angular error around Y (pitch)	± 350 µrad	± 105 µrad	± 80 µrad	typ.
Angular error around Z (yaw)	± 375 µrad	± 400 µrad	± 475 µrad	typ.
Positioning	B-421.131	B-421.231	B-421.331	Tolerance
Minimum incremental motion in X	0.01 µm	0.01 µm	0.01 µm	typ.
Unidirectional repeatability in X	± 0.25 µm	± 0.25 µm	± 0.25 µm	typ.
Reference switch	Optical, direction sensing (reference edge track), 5 V, TTL	Optical, direction sensing (reference edge track), 5 V, TTL	Optical, direction sensing (reference edge track), 5 V, TTL
Integrated sensor	Incremental linear encoder	Incremental linear encoder	Incremental linear encoder
Sensor signal	Sin/cos, 1 V peak-to-peak	Sin/cos, 1 V peak-to-peak	Sin/cos, 1 V peak-to-peak
Sensor signal period	20 µm	20 µm	20 µm
Sensor resolution	6 nm	6 nm	6 nm
Drive properties	B-421.131	B-421.231	B-421.331	Tolerance
Drive type	Biphase Inertia Technology BIX	Biphase Inertia Technology BIX	Biphase Inertia Technology BIX
Nominal current, RMS	0.05 A	0.05 A	0.05 A	typ.
Peak current, RMS	0.3 A	0.3 A	0.3 A	typ.
Peak current, time limit	10 s	10 s	10 s
Drive force in positive direction of motion in X	2.5 N	2.5 N	2.5 N	typ.
Drive force in negative direction of motion in X	2.5 N	2.5 N	2.5 N	typ.
Mechanical properties	B-421.131	B-421.231	B-421.331	Tolerance
Holding force in X, passive	3 N	3 N	3 N	min.
Maximum load capacity, base plate horizontal	0.5 kg	0.5 kg	0.5 kg	typ.
Maximum load capacity, base plate in any orientation	0.15 kg	0.15 kg	0.15 kg	typ.
Guide	Ball guide	Ball guide	Ball guide
Overall mass	130 g	140 g	150 g
Mass without cable	35 g	45 g	55 g
Material	Stainless steel	Stainless steel	Stainless steel
Endurance at 1013 hPa, unloaded, 50 % duty cycle, 22 ±3 °C	50 km	50 km	50 km	typ.
Miscellaneous	B-421.131	B-421.231	B-421.331	Tolerance
Operating temperature range	0 to 40 °C	0 to 40 °C	0 to 40 °C
Connector	D-sub 15 (m)	D-sub 15 (m)	D-sub 15 (m)
Cable length	1.5 m	1.5 m	1.5 m
Minimum bending radius cable	40 mm	40 mm	40 mm
Recommended controllers/drivers	E-881.1X1R	E-881.1X1R	E-881.1X1R

Unidirectional repeatability in X: Mean value.

At PI, technical data is specified at 22 ±3 °C. Unless otherwise stated, the values are for unloaded conditions. Some properties are interdependent. The designation "typ." indicates a statistical average for a property; it does not indicate a guaranteed value for every product supplied. During the final inspection of a product, only selected properties are analyzed, not all. Please note that some product characteristics may deteriorate with increasing operating time.

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Datasheet

Versione / Data

2025-12-17

pdf - 837 KB

Versione / Data

2025-12-17

pdf - 852 KB

Download

Documentation

Versione / Data

2024-12-20

pdf - 4 MB

Versione / Data

2024-12-20

pdf - 4 MB

Download

3D Models

zip - 8 MB

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Ask for a free quote on quantities required, prices, and lead times or describe your desired modification.

B-421.131 Novità!

BIX miniature linear stage, piezoelectric inertia drive, 13 mm travel range, linear encoder, 6 nm resolution, 2.5 N drive force, dimensions 25 × 29 × 11 mm (L × W × H)

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B-421.231 Novità!

BIX miniature linear stage, piezoelectric inertia drive, 23 mm travel range, linear encoder, 6 nm resolution, 2.5 N drive force, dimensions 35 × 29 × 11 mm (L × W × H)

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B-421.331 Novità!

BIX miniature linear stage, piezoelectric inertia drive, 33 mm travel range, linear encoder, 6 nm resolution, 2.5 N drive force, dimensions 45 × 29 × 11 mm (L × W × H)

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