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Designation
Toothed Pulley
Form
A
DIN Standard
7721
Body material
aluminium
Component material
steel
Body surface finish
bright
Component surface finish
galvanised
B=Width
15
BW=Belt width
10
D2=max.
14
D=Diameter
31,83
N=No. of teeth
20
P=Profile
T5
D1 max.
23
D3
31
D4 max.
36
Form definition
with rim flanges
L
21

Description

Material
Aluminium.
Rim flanges, steel.
Version
Aluminium bright.
Rim flanges, electro zinc-plated.
Note
Standard T profile acc. to DIN 7721 T2 with metric pitch (trapezoidal toothing). At least one belt pulley must have a rim flange. The toothed belt pulleys have a centre bore or a pilot hole (this can vary due to manufacturing methods). For this reason, the dimension D2 max. given in the table is the maximum diameter of the bore with which the toothed belt pulleys are supplied. This pilot/centre bore can be amended by the customer to produce a reamed bore, reamed bore with keyway or a tapped hole. Alternatively, customers can also use bushes to reduce the bore diameter.
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