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Designation
Trapezoidal thread spindle
Version 1
Clockwise thread rolled
Version 2
double-start
Main material
mild steel
DxP=thread
Tr 30x12 P6
L=Length
1000
D1 max.
26,882
D1 min.
26,547
D2
21,9
Steel code
1.0401
UNSPSC Code
31171515
~ CONFLICT MINERALS 3TG status
no intentional 3TG
~ CP65 substance 2 cancer
soots, tars, and mineral oils
~ PFAS free?
yes
~ REACH SVHC-free?
yes
~ RoHS conformity
yes, without exemption
~ TSCA 6(H) conformity
yes

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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