SURFACES EXAMPLES			APPLICATIONS
25 - 16	CAST / FORGED PARTS		25 - 16	SURFACES WITHOUT REQUIREMENTS
12.5 - 8			12.5 - 8	COMMON SURFACES OF MECHANIZED PARTS
6.3 - 4	ROLLED PROFILES		6.3 - 4	COMMON SURFACES OF MECHANIZED PARTS
3.2 - 2	CALIBRATED PROFILES		3.2 - 2	SURFACES WITHOUT SPECIAL QUALITY REQUIREMENTS - Saw with mitre saw -  Face turned of shafts - Face turned of bronze and brass bushings
1.6 - 1.25			1.6 - 1.25	SLIDING AND FINE ADJUSTAMENTS SURFACES LIGHTLY LOADED - Spacer rings - Shaft keys and keys - Eccentric parts - Gear tooth, rack tooth
1 - 0.8	CALIBRATED GRINDED PROFILES		1 - 0.8	SLIDING SURFACES IN DRY - Finish of hardened parts - Finish of threads - External surfaces of bronze bushings (f7) - Housings of bearings and bushings (H7) -- Surfaces for precision adjustments
0.63 - 0.5	CHROME PROFILES	AUTO-LUBRICATED  BEARINGS	0.63 - 0.5	ROTATING AND SLIDING SURFACES - Sliding and turning shafts (v=0,5-1 m/s) - Shafts for plain bearings and plain bearings ( internal diameter) - Internal surfaces of bronze bushings (H7) - Sliding lateral guides - Centering points - Bearings housing (J6, j6, k6,…)
0.4 - 0.32			0.4 - 0.32	FRICTION SURFACES - Precision grinding gear tooth - Internal surfaces of metallic friction-reducing bushings - Way of bearings
0.25 - 0.2			0.25 - 0.2	QUICK ROTATING SURFACES - Pivots (v=1-1,5 m/s) - Reduced lubricated shafts - Rod bearings
0.16 - 0.125			0.16 - 0.125	HIGH SPEED ROTATING SURFACES - High speed rotating shaft on bronze