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■ Grease splattering test

Condition of grease splattering from the shaft

Conventional Labyrinth seal BS2010
AS2 grease
3000min-1

L1 seal ball screw with minimal grease splatter

4.7 Splattering amount
reduced to 1/10

2.8 Amount of splattered
grease g

1.9 0.43 L1 seal ball screw with
minimal grease splatter
Labyrinth seal 0.21
0.22
Labyrinth seal
Newly
developed seal

BS3210 After refilling of grease
AS2 grease BS shipping status
2400min-1

■ Product range

Shaft diameter : Diameter 15−32mm

Lead : 5mm or more

Lubricant : General grease, Clean room grease, Grease for food & medical

Environment : Under normal pressure and normal temperature

Short lead-time : NSK standard stock BS, "Compact FA series"(dia. 15−25)", "High-Speed SS series"(dia. 32),
can have L1 seals added after completion

Minimal grease splatter L1 seal unit
(Both ends)

For Compact FA series Shaft diameter and lead Unit mm
Shaft diameter 15−25
Shaft Lead 5 10 20 25 Available series
For High-Speed SS series diameter
Shaft diameter 32
15

MM 20 Compact FA

Minimal grease splatter L1 seal unit 25
(Both ends)

32 High-Speed SS

L1 seal M length 10 20mm

NSK Ltd. has a basic policy not to export any products or technology designated as controlled items
by export-related laws. When exporting the products in this brochure, the laws of the exporting
country must be observed. Specifications are subject to change without notice and without any
obligation on the part of the manufacturer. Every care has been taken to ensure the accuracy of the
data contained in this brochure, but no liability can be accepted for any loss or damage suffered
through errors or omissions. We will gratefully acknowledge any additions or corrections.

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