Features

• Superior dust prevention
• Stable torque characteristics
• High lubricating performance
• Rust prevention performance equivalent to that of lithium grease

Performance / Specifications

Number of dust particles from ball screw (particle size 0.13 μm or more)

Test conditions

• Ball screw shaft diameter: 20 mm
• Lead: 20 mm
• Preload: 800 N
• Rotational speed: 1200min^-1
• Stroke: 250 mm
• Amount of grease: 1 cc
• Measurement interval: 1 h

Number of dust particles from ball screw (particle size 0.13 μm or more)

Test conditions

• Ball screw shaft diameter: 20 mm
• Lead: 20 mm
• Preload: 800 N
• Stroke: 250 mm
• Amount of grease: 1 cc

Values shown are mean values taken after 100 measurements for each rotational speed. The operating time of the ball screw during these measurements is about 240 hours.

Lubricating performance: Comparison of grease resistance

• Values shown are the maximum current value ratio at 500 mm/s (1500 min^-1) for a single-axis robot.
• The value of the drive motor current is proportional to the load torque.
• Therefore, the larger the current value is, the larger the grease resistance becomes (rotation becomes slower).

Torque characteristics: Change in preload torque over operating time

Appearance of screw grooves after testing (electronic microscope pictures)

	Screw shaft	Nut
KURODA C Grease
Grease for optical instruments
Lithium grease

Attention

When using C grease, carefully read the precautions on the “Safety Data Sheet” (SDS) for the oil type in advance. For the “Safety Data Sheet”, please contact us.

Major properties