Type P Glass Beads (borosilicate)

  • Produced either in soda-lime glass or in high-quality borosilicate glass
  • High chemical resistance
  • Often used in chemical industry, in dosage pumps or ball bearings

Chemical composition weight-%

SiO2

81.20 %

B2O3

12.40 %

Na2O

2.93 %

Sb2O3

< 0.01 %

As2O3

< 0.01 %

Others

 

 

Chemical Composition weight-%

Hydrolytic class

HGB 1

DIN ISO 719

Acidic class

S 2

DIN 12116

Alcaline class

A 1

DIN 695

Specific weight

2.23 kg/ltr.

DIN ISO 787-10

 

Grades and Tolerances ANSI/AFBMA - 10.1989

Grade

Deviation from spherical form in micron

Maximum surface roughness in micron

200

5

0.2

100

2.5

0.125

Some of the mainly used standard sizes:

Diameter *)

Tolerance **)

Roundness**)

Stand. Surface

Weight/1000 pcs

Pieces / 1000 gr

1,588 mm 1/16“

+/- 0,02 mm

≤ 0,02 mm

polished

4,67 gr.

213.867

2,500 mm

+/- 0,02 mm

≤ 0,02 mm

polished

18,24 gr.

54.812

3,969 mm 5/32“

+/- 0,02 mm

≤ 0,02 mm

polished

73,00 gr.

13.698

4,762 mm 3/16“

+/- 0,02 mm

≤ 0,02 mm

polished

126,09 gr.

7.931

6,350 mm 1/4“

+/- 0,02 mm

≤ 0,02 mm

polished

298,97 gr.

3.345

7,938 mm 5/16“

+/- 0,02 mm

≤ 0,02 mm

polished

584,03 gr.

1.712

12,700 mm 1/2“

+/- 0,02 mm

≤ 0,02 mm

matt

2.391,75 gr.

418

19,050 mm 3/4“

+/- 0,02 mm

≤ 0,02 mm

matt

8.072,15 gr.

124

31,750mm 1 1/4“

+/- 0,02 mm

≤ 0,02 mm

matt

37.371,08 gr

27

Product data sheet (PDF - 90.53 kB)