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What this

2unit can Long Life even in Severe Environments

achieve:

Shortened service life because of
- Contaminated environments
- Quick deterioration of lubricants absorbed by dust
- Lubricant deteriorates or is washed away by water seepage

Use of the NSK K1 lubrication unit significantly prolongs the life of your machinery,
even in severe contaminated environments or undesirable environments for lubrication

Advantages: • A reduction in maintenance cost, including repair parts and personnel
• Longer time between repairs  shortened down-time on the production line  Improved

productivity

 Example of severe environments

• Contaminated environments; Machine tools, welding machines, etc.
• Environments where oil- and grease absorbing dust is produced; Woodworking machines, textile machines,

papermaking machines, printing machines, etc.
• Environments where lubricant is washed away; Machines that are washed away entirely by water, machines that are

exposed to rain or water.

Note: Rust preventive treatment is required for corrosive environments.

 Test result of ball screws in contaminated environments

Sample: Screw shaft dia. 40 mm, lead 10 mm
Circuit: 2.5 × 1
Lubrication: 1) AS2 Grease (packed before operation only )

2) AS2 Grease (packed before operation only) + NSK K1
Load: 3.9 kN
Speed: 2 000 min-1 (20 m/min)
Stroke: 340 mm
Contamination: Dropped contaminants onto screw shaft periodically.

FCD45 particle 115 MESH added at coolant
(Coolant dilution 30:1)
Volume of contaminant: Coolant 3 600 cm3 + casting
particles 1.8 g/day

Test result: abrasion on nut grooves of a ball screw (perpendicular surface) (Running distance: 1 864 km)

(1) Without NSK K1 (2) With NSK K1