In this presentation of Betek is shown which equipment is used for trenching.

1. BETEK GmbH & Co. KG · Titel der Präsentation · 11.06.2012
Weiterkommen!

2. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Table of Contents:
• Trenching machine Types
• Wear Parameters / Overview
• Cutting Tool Parameters
• Tool dimensions
• Fixing Systems
• Tungsten Carbide Grade/ Shape
• Wear Patterns
• Cutting Tool Overview and Selection

3. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
„Big“ Machine Types:
 Chain Trenching Machine Wheel Trenching Machine
 Bucket Trenching Machine

4. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
„Big“ Machine Types:
 Terrain Levelling Machine

5. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
„Small“ Machine Types:
 Chain Trenching Machine
 Wheel Trenching Machine

6. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Influences on pick wear:
• Cutting speed
• Cutting pressure
• Material strength
• Material characteristic
• Abrasion
• Density
• Quartz contents
• Cooling
• Weather
• Rotation

7. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cutting tool parameters/ components:
Tungsten Carbide
style / gradeHead length
Head diameter
Shank diameter
Shank style
Fixing system
Steel hardness

8. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Shank Systems:
 Straight Shank Ø11/ 14/ 18,65/ 19,4/ 20/ 22/ 25,4/ 30mm:
 Step Shank 38/30mm:

9. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Fixing Systems:
 internal Systems:
Clip Ring (short retainer)
Sleeve (long retainer)
 external Systems:
Snap Ring (Seeger ring)
Lock Ring

10. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Fixing Systems (internal Systems):
Clip Ring (short retainer) Sleeve (long retainer)

11. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Fixing Systems (external Systems):
Snap Ring (Seeger ring) Lock Ring

12. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Installation of external lock rings with BETEK device BZ35:
Device: BZ35
Lock ring: SI35/22

13. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Disassembly of external lock ring SI35/22 with tool BZ34
Device: BZ34
Lock ring: SI35/22

14. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes:
 Bottom diameter influences:
 Toolholder protection
 Resistance against breakage

15. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes:
 Head Length influences:
 Penetration
 Granulate size
 Productivity
 Toolholder protection

16. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes:  The head length influences the toolholder protection
64 mm
77 mm

17. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Shapes:
 Cylindrical Style:
 Maximum toughness
 For hard condition
 Heavy impacts
 Cap Pin Style (CP):
 Good abrasion resistance
 Medium protection of the steel body
 Reducing steel wash
 Medium hard condition

18. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Shapes:
 Cap Style
 Best abrasion resistance
 Good protection of the steel body
 Reducing steel wash
 Soft to medium hard condition

19. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Grade: B10G
Tungsten Carbide: 94%
Cobalt: 6%
Ø Grain Size: 20µm
High wear resistance!
Tungsten Carbide Grades:

20. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Grade: B20G
Tungsten Carbide: 91,5%
Cobalt: 8,5%
Ø Grain Size: 20µm
High wear resistance!
Tungsten Carbide Grades:

21. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern on Tungsten Carbide Inserts:
Broken tungsten carbide:
 Wrong TC-Grade
 Ø too small
 Heavy impact on „steelbars“ or
r boulders

22. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Reptile Skin:
 Less TC wear
 High and many temperature changes
Wear pattern on Tungsten Carbide Inserts:

23. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Chain design for „Hard Rock“ application:
Full coverage pattern
Ejector plate Side cutter

24. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern:
Bad rotation of the cutting tool:
 Too small axial clearance
 Too small radial clearance
 Sticky material
 Worn tool holder

25. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Worn tool holder by:
 Broken cutting tools
 To late monitoring of the cutting
b tool wear
Result:
 No proper seat for new tools
 Easy shank breakage
 Non rotating tools
Replacement of the tool holder
necessary!
Wear pattern:

26. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern broken cutting tool:
Reasons:
 Not professional heat treatment
d (to hard and brittle)
 Heavy shock
 Head length to much
 Shank system to small
Improvements:
 Reduction head length
 Increase the holder system
(if possible)

27. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern:
Bad rotation of cutting tools by:
 Sticky material
 Unproper cleaning of the
00 tool holders bore hole
Clean always the bore hole before
fixing a new cutting tool!

28. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
A large axial clearance by worn
tool holder:
 Demolition of the snap ring
 Breakage of the snap ring
 Replacement time for the
cutting tools will increase
 High risk of tool loss
Wear pattern:

29. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern:
 Replacement time for the
cutting tools will increase
 High risk of tool loss
A large axial clearance by worn
tool holder:
 Demolition of the snap ring
 Breakage of the snap ring

30. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Toolholder with groove for clip ring:
 Depose of material in the groove
 Prevents tool from rotation
 Using tool holder without
iiiiigroove when not required!
Wear pattern:

31. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Soft material: Means less wear on the TC
 The tools are longer on the chain -> longer time for steel wear
 Breaking out or loss of cylindrical TC pins
 Solution: Cap Style TC
Wear pattern:

32. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cap Style TC
 Head Ø = Holder Ø
 Optimum TC wear
 Wear of steel and TC are
vvvcorresponding
 Economic tool
Wear pattern:

33. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cylindrical TC in Soft Conditions:
 Head Ø = Holder Ø
 TC is not protecting the steelbody
 Risk of TC loss
Cap style Tungsten Carbide tip
recommended!
Wear pattern:

34. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Proper rotating cutting tool
with cap style tip:
 Tungsten carbide used
iiiiialmost to the end
 Tool holder protection
iiiiicould be better
Wear pattern:

35. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cap style TC tip broken by bolders, used on
side cutters
Wear pattern:

36. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Side cutters with larger
Carbide Tip Ø 25mm CP Style
BKF36

37. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Side cutters with larger
carbide tip Ø and larger
steel body
BKF11

38. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BKF12 (Ø19mm) in the middle of the
chain
BKF11(Ø22mm) on the side cutters

39. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Additional protection of the Chain Base Plate
Weld on tooth: BFZ35M  reduces the rewelding efforts

40. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Additional protection of trenching wheels with
TungStuds
Side protection on fast running wheels

41. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Additional protection of trenching chains with
TungStuds
Side protection on every second plate

42. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Overview BETEK Product Series
Shank Ø sleeve short retainer external snap ring external lock ring
11 BM
14 BM BM
18,65 BTR BTR
19,4 BSH BSK BC
20 BSH
22 BC BC
25 BTK BTK
30 BGK BGS BGF
38/30 BKH BKS BKF

43. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BETEK Product Series: BTK/B40

44. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BETEK Product Series: BTK/BG25F

45. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BETEK Product Series: BKF/BS38F

46. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Walk behind Trencher: Weld on tooth :
BFZ87

47. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching

48. BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Thank you for your attention!