1. Bridge Modules BKK and BKR

2. Bridge Modules Market Requirements
Your Requirements:
Installation-ready, cost-effective complete solutions
High dynamic performance
High positioning accuracy
High stiffness
Simple and variable attachment of further axes
Self-supporting design
Our Solution:
BKK and BKR Bridge Modules
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

3. Bridge Modules Benefits at a Glance
Main body made of highly rigid aluminum profile
Two drive variants
Ball screw drive
Toothed belt drive
Two integrated ball rail systems arranged at a 90° angle
Integral elements protected by polyurethane sealing strips
Angular carriage with two mounting surfaces
Ideal as Y axes in gantry systems
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

4. Bridge Modules Overview
Aluminum Extrusion Housing
Optimized for high stiffness
Cover plate and sealing strips to protect internal elements
Two Drive Unit Options:
Ball screw drive with screw supports
Speed up to 1.6m/s with stroke of 3990 mm
Toothed belt drive
Speed up to 5m/s with stroke of 5500mm
Angular Carriage
Two mounting surfaces
With t-slots and threaded holes
camoLINE mounting interface
Simple attachment of additional axes
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

5. Bridge Modules Dimensions
Size
Drive
Main Body
Including Carriage
Max. length (mm)
Width (mm)
Height (mm)
15-115
Ball Screw
115
145
136.5
166.5
5.000
20-135
135
180
156.5
201.5
Belt
5.800
Width
Height
Width
Height
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

6. Bridge Modules Drive Options
Size
Guide
Drive
Ball Screw
d0 x p (mm)
Toothed Belt
15-115
Ball Rail System
Size 15
25 x 5
25 x 10
25 x 25
50 AT 10
20-135
Size 20
32 x 5
32 x 10
32 x 20
32 x 32
70 AT 10
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

7. Bridge Modules Performance Data
Max. Drive Torque
[Nm]
Max. Permissible Forces Fy Fz
[N] [N]
Max. Permissible Moments
Mt ML
[Nm] [Nm]
BKK
BKK 26 37
15, ,700
26, ,100
BKR
150
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

8. Bridge Modules Stiffness
Planar Moment of Inertia
Iy Iz
(cm4) (cm4)
MKK
BKK
BKK
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

9. Bridge Modules – BKK Motor Mounting
Standard Flange and Coupling
Suitable for MSK motors
Mounting possible on both sides
Standard Side drive
Suitable for MSK motors
Reduction ratios: BKK : i = 1 / 1.5 / 2 BKK : i = 1 / 2
Mounting possible on both sides
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

10. Bridge Modules – BKR Motor Mounting
External Gear Reducer
BKR
LP 090 and LP 120 Gear ratios: i = 3 / 5 / 10
Motor Attachment
Suitable for MSK motors
Mounting possible on both sides
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

11. Bridge Modules Industries and Applications
Automation and Handling
Automotive
Packaging
Wood processing
Printing
Flat Panel Manufacturing
Solar Panel Manufacturing
Applications
Gantry systems
Linear portals
Cantilever designs
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

12. Bridge Modules Features – Advantages – Benefits
Main body made of aluminum profile optimized for torsional rigidity and load capacity
Low angular deflection under moment load
Low bending deflection under radial load
Self-supporting installation possible even with large spans
Compact machine designs
2 ball rail systems arranged at a 90° angle
Large distance between the linear guides
Excellent stiffness against moment load
Angular carriage with high rigidity
Two mounting surfaces at a 90° angle
with T-slots and threads
with dowel holes and centering bores
compatible with camoLINE
Easy mounting of the customer’s attachment
Simple and variable attachment of additional axes (CKK, VKK)
Cover
Internal components pro-tected by cover plate and polyurethane sealing strip
Suitable for use in harsh environments
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

13. Bridge Modules Features – Advantages – Benefits
Feature – BKK
Advantages
Benefits
BSA free of backlash, Ø25 or Ø32 mm, available with up to 5 screw supports
High dynamics with up to 5000 mm length
High rigidity
High drive torque
High positioning accuracy
Short cycle times
High performance density, compact machine designs
Feature – BKR
Toothed Belt Drive
High dynamics with up to 5800 mm length
High permissible drive torque due to toothed belt with high tensile strength
Short cycle times with long strokes
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

14. High Stiffness and Dynamic Performance
...with BKK and BKR Bridge Modules
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,

15. Thank You! For More Information… Application Engineering
Bosch Rexroth
Contact Information
BRL-US / Charlotte, NC
Danielle Collins
Product Manager – Linear Modules
Application Engineering Manager
Contact Information
BRL-US / Charlotte, NC OR
Thank You!
Linear Motion and Assembly Technologies BRL/SPM2, Georg Selig,