Technical Information considering gears, mechanical components, steels, heat treatment and machining is listed following:

Case Hardness Depth Definition

Correction of gear toothing

Degree of gear accuracy vs application

Material of worm/gear

Optimum number of teeth for bevel gears

Recommended use of spline types

Steel Grade Equivalent

Steel Properties

Surface Roughness for different manufacturing proceses

Shows the roughness average for different manufacturing processes in micrometers and microinches.

 

Manufacturing Process	Roughness Average Top Number - Micrometers Bottom Number - (Microinches)
	50 (2000)		25 (1000)		12.5 (500)		6.3 (250)		3.2 (125)		1.6 (63)		0.80 (32)		0.40 (16)		0.20 (8)		0.10 (4)		0.05 (2)		0.025 (1)		0.012 (.5)
Flame Cutting
Snagging
Sawing
Planing, Shaping
Drilling
Chemical Milling
Elect Discharge Machining
Milling
Broaching
Reaming
Electron Beam
Laser
Electro-Chemical
Boring, Turning
Barrel Finishing
	50 (2000)		25 (1000)		12.5 (500)		6.3 (250)		3.2 (125)		1.6 (63)		0.80 (32)		0.40 (16)		0.20 (8)		0.10 (4)		0.05 (2)		0.025 (1)		0.012 (.5)
Electrolytic Grinding
Roller Burnishing
Grinding
Honing
Electro-Polish
Polishing
Lapping
Super Finishing
Sand Casting
Hot Rolling
Forging
Permanent Mold Casting
Investment Casting
Extruding
Cold Rolling, Drawing
Die Casting
	50 (2000)		25 (1000)		12.5 (500)		6.3 (250)		3.2 (125)		1.6 (63)		0.80 (32)		0.40 (16)		0.20 (8)		0.10 (4)		0.05 (2)		0.025 (1)		0.012 (.5)

 

 

 

 

The values are shown with a typical range and a less frequent range for each manufacturing process.

 

	Average Range
	Less Frequent Range

The values are shown with a typical range and a less frequent range for each manufacturing process.

 

	Average Range
	Less Frequent Range