GREASE CLASSIFICATION

NLGI Grease Consistency Classification

This classification was established in the USA by the National Lubricating Grease Institute (NLGI). This classifies greases solely in terms of their hardness or softness; no other property of performance level is taken into consideration.

 

NLGI Consistency

Kinematic Viscosity at 40°C (mm2/s

Minimum

Maximum

000

445

475

00

400

430

0

355

385

1

310

340

2

265

295

3

220

250

4

175

205

5

130

160

6

85

115