Single-Axis Product Directory

Linear Modules for Industrial Automation

Choose by drive type, enclosure and frame size, then open the exact model page for detailed specifications.

6Product families
39Published models
Products / Single-Axis / Ball Screw Modules / Fully Enclosed

BS SERIES

Ball Screw Linear Modules

Ball-screw positioning modules grouped by enclosure structure. Choose a series, then open the exact frame-size page.

BS · 14 models
BSFD140 fully enclosed dust-protected ball screw linear module

BSFD Series

Fully enclosed ball-screw modules with an enhanced protection-oriented cover design.

Size-code guide: The numeric suffix identifies the nominal body-width class; for example, 140 means the 140 mm class.

BSF140 standard fully enclosed ball screw linear module

BSF Series

Standard fully enclosed ball-screw modules with a clean external profile.

Size-code guide: The numeric suffix identifies the nominal body-width class; for example, 140 means the 140 mm class.

BSFE080 embedded-guide fully enclosed ball screw linear module

BSFE Series

Compact fully enclosed modules built around an embedded guide structure.

Size-code guide: The numeric suffix identifies the nominal body-width class; for example, 080 means the 80 mm class.

How to read the model codes: the prefix identifies the drive and structure family; the numeric suffix is the nominal frame or body-width class. Open the model page for exact dimensions, stroke, load, speed, motor and mounting options.

What is a linear module?

A linear module (also called a linear axis, linear stage or linear unit) is a ready-to-install axis: aluminium profile, linear guide, drive and motor mount are combined in one assembly. The carriage carries the load and moves it along the stroke to a programmed position, driven by a servo or stepper motor. Compared with an axis built from individual components, a linear module saves design and assembly time and comes with defined ratings for payload, speed and repeatability.

Drive types at a glance

DriveTypically used forHS LINEAR series
Ball screwprecise positioning, high thrust, vertical axesBSFD, BSF, BSFE, BSS – 14 models
Toothed beltlong strokes, high speed, light to medium loadsBTF, BTS, BTC – 11 models
Dual drivewide carriage platformsBTDD, BSDD – 3 models
Rack and pinionvery long strokes, large machines, several carriages on one axisRP – 3 models
Linear motorhigh dynamics and short cycle times, no mechanical transmissionLM – 4 models
Electric linear actuatorpushing, lifting and pressing when the load is guided elsewhereAC – 4 models

Choosing a linear module in five steps

  1. Load and mounting orientation: mass, centre of gravity, horizontal, vertical or wall mounting.
  2. Stroke and installation space: usable stroke plus safety travel, available length and width.
  3. Speed and cycle time: acceleration, motion profile and duty cycle.
  4. Accuracy and environment: repeatability, dust, chips or clean conditions – this decides between open, semi-enclosed and fully enclosed designs.
  5. Motor and sensors: motor type and mounting, a brake for vertical axes, limit and home switches.

Worked examples are in the guide How to Size a Linear Module: Payload, Speed, Thrust and Lead; the choice between ball screw and belt is explained in Ball Screw vs. Belt Drive Linear Modules: How to Choose, and Linear Module vs. Electric Cylinder: Which One Do You Need? shows when a rod-type actuator is the better fit. For two- and three-axis setups, see multi-axis systems.