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Designation
Trapezoidal Thread Spindle
Version 1
RH-thread rolled
Version 2
double-start
Body material
stainless steel
Steel code
1.4301
DxP=Thread
TR 20X8 P4
L=Length
1000
D1 max.
17,905
D1 min.
17,640
D2
14,8

Description

Material
Low-carbon steel 1.0401 (C15) or stainless steel 1.4301.
Version
Steel, rolled, bright.
Stainless steel, rolled, bright.
Note
Rolled trapezoidal thread spindles with high precision.
ISO trapezoidal thread based on DIN 103.

The feed movement is twice as high with double-start spindles as it is with single-start trapezoidal thread spindles. There is no self-locking due to the high pitch.

Description of a double-start thread drive based on Tr 12x6 P3.
Tr = trapezoidal thread.
12 = OD.
6 = Thread pitch (axial movement after one rotation).
P3 = distance between the two threads.

Tolerance class 7e
Pitch precision 0.3/300 mm
Length sawed with excess, ends not deburred.
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