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Lead Angle and Shim Selection

Calculate Lead Angle and Shim Selection for LT Threading System.

Conversion of Workpiece Material

 
in mm
Number of starts
Calculate
 

Your Results

°
 

Selection of SHIMs
LeadAngle-L hand of thread
LeadAngle-R hand of hold / insert

feed direction towards the chuck (standard helix )

To determine catalog number replace (*) asterisk with the number 3 or 4. (3 = 3/8 I.C. or 4 = 1/2 I.C.)

0° to 1° = SMYI*1N
1° to 2° = SMYI*
2° to 3° = SMYI*1P
3° to 4° = SMYI*2P 		0° to 1° = SMYE*1N
1° to 2° = SMYE*
2° to 3° = SMYE*1P
3° to 4° = SMYE*2P 		0° to 1° = SMYE*1N
1° to 2° = SMYE*
2° to 3° = SMYE*1P
3° to 4° = SMYE*2P 		0° to 1° = SMYI*1N
1° to 2° = SMYI*
2° to 3° = SMYI*1P
3° to 4° = SMYI*2P
lead_angle_drawing_01 lead_angle_drawing_02 lead_angle_drawing_03 lead_angle_drawing_04
0° to -1° = SMYI*2N
-1° to 2° = SMYI*3N		 0° to -1° = SMYE*2N
-1° to 2° = SMYE*3N		 0° to -1° = SMYE*2N
-1° to 2° = SMYE*3N		 0° to -1° = SMYI*2N
-1° to 2° = SMYI*3N
lead_angle_drawing_rev_01 lead_angle_drawing_rev_02 lead_angle_drawing_rev_03 lead_angle_drawing_rev_04
These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.
 

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