Surface condition (finish on sliding parts)
KUGLER-Tokat bronze
N5 to N6 i.e. Ra 0.4 à 0.8 microns (Ra 16 – 32 microinches)
- Machine by material cutting
- Avoid polishing, honing, grinding
- These operations may encrust the surface of the bronze with abrasive particles
Counter-piece
N4 i.e. Ra 0.1 – 0.2 microns (Ra 8 micro-inches)
- Avoid, if possible, chromium plating (bad for the lubricant)
Hardness
KUGLER-Tokat bronze
See table, according to the type of bronze and the thickness of layer
Counter-piece
Minimum 55 HRC (For Tokat 30 with a high lead content, minimum 35 HRC)
Adjustment of the assembly (normal bore)
KUGLER-Tokat bronze
H7 or F7
Counter-piece
F7 (H6/H7 for slow and oscillating movements)
Lubrication grooves
Rotating and oscillating movements: Straight grooves at 45° to point of contact
Flat parts, linear guides
Arrange the grooves so as to ensure the best distribution of lubricant.
- If lubrication is not continuous (bubbling, etc), grooves must not be placed crosswise
Operating temperatures
Kugler-BIMETAL parts can operate within a temperature range of -70°C à +250°C
- Consult Kugler BIMETAL SA in specific cases