ISO 9904:2000 pdf free download.Textêle machinery and accessories — Steel pins for spinning preparatory and spinning machinery.
1 Scope
ISO 9904 specifies the dimensions, characteristics and designations of steel pins recommended
for spinning preparatory and spinning machinery.
2 Basic dimensions
The basic dimensions of the pins are given in Table 1.
3 Round pins
3.1 Dimensions
Round pins are divided into the following three types:
Type A: Round pins for spinning preparatory machinery, In which
for 5,56 mm < I <17,46mm
1 for 19,05 mm <l <50,8 mm
— Type B: Hackle pins for bast fibre spinning machinery, in which
— Type C: Card pins, in which
Figure 1 shows round pm dimensions, using Type A, 2 = 11, as an example. The dimensions of the various round pin types are given in Table 2.
3.3 Designation
The designation of a round pin shall include the following information in the order given:
a) “round pin”;
b) reference to this International Standard:
c) type (A. B or C);
d) diameter number;
e) length. li.
EXAMPLE Round pin ISO 9904 — B 16 — 25,4
4 Round pins with notch
4.1 Dimensions
These are round pins for spinning preparatory machinery in which 2 = , as shown in Figure 2. Their dimensions are given in Table 3.
Material: Steel (quality at the choice of the manufacturer)
Vickers hardness: 620 HV2 to 750 HV2
Surface roughness: Ru c 01 im
4.3 Designation
The designation of a round pin with notch shall include the following information in the order given:
a) round pin with notch
b) reference to this International Standard;
c) diameter number;
d) length. li;
e) letter K for notch.
EXAMPLE Round pin with notch ISO 9904 — 16— 25,4 — K
5 FIat pins
5.1 Dimensions
There are two types of flat pin:
5.2 Characteristics
Material: Steel (quality at the choice of the manufacturer)
Vickers hardness: 670 HV2 to 735 HV2
Surface roughness (on flat side): Rmax 1 im; Ru 0,1 im
5.3 Designation
The designation of the flat pin shall include the following information in the order given:
a) hat pin”:
b) reference to this International Standard;
c) Type (A or B);
d) cross-section number;
e) length, i•
EXAMPLE Flat pen ISO 9904— B 17 x 23—22,23
6 FIat pins with foot
6.1 Dimensions
Flat pin dimensions are shown in Figure 4 and given in Table 5.
6.2 Characteristics
Material: Steel (quality at the choice of the manufacturer)
Vickers hardness: 670 HV2 to 735 HV2
Surface roughness (on f tat side): Rm 1 tim: Ru 0,1 pim
6.3 Designation
The designation of a flat pin with foot shall include the following information in the order given:
a) f1at pin with foor;
b) reference to this International Standard;
c) cross-section number;
d) length.!1
e) letter F for foot.
EXAMPLE Flat pin with foot ISO 9904— 17 x 23 — 25,4 — F