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DIN 808 G-NI

Universal joints with friction bearing

SKU: 8391 Category:
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Product Details

Standard Elements Main dimensions Mounting hole Weight
Description D L l1 l2 d H7 h g
DIN 808-16-B6-34-EG-NI 16 34 17 6 8 40
DIN 808-16-B6-56-DG-NI 16 56 17 22 6 8 60
DIN 808-16-B8-40-EG-NI 16 40 20 8 11 40
DIN 808-16-B8-62-DG-NI 16 62 20 22 8 11 65
DIN 808-22-B10-48-EG-NI 22 48 24 10 12 95
DIN 808-22-B10-74-DG-NI 22 74 24 26 10 12 145
DIN 808-25-B12-56-EG-NI 25 56 28 12 13 147
DIN 808-25-B12-86-DG-NI 25 86 28 30 12 13 220
DIN 808-32-B16-68-EG-NI 32 68 34 16 16 286
DIN 808-32-B16-104-DG-NI 32 104 34 36 16 16 429
DIN 808-42-B20-82-EG-NI 42 82 41 20 18 599
DIN 808-42-B20-128-DG-NI 42 128 41 46 20 18 895
DIN 808-50-B25-108-EG-NI 50 108 54 25 26 1107
DIN 808-50-B25-163-DG-NI 50 163 54 55 25 26 1620
DIN 808-22-K10-48-EG-NI 22 48 24 10 12 96
DIN 808-22-K10-74-DG-NI 22 74 24 26 10 12 144
DIN 808-25-K12-56-EG-NI 25 56 28 12 13 150
DIN 808-25-K12-86-DG-NI 25 86 28 30 12 13 222
DIN 808-32-K16-68-EG-NI 32 68 34 16 16 283
DIN 808-32-K16-104-DG-NI 32 104 34 36 16 16 426
DIN 808-42-K20-82-EG-NI 42 82 41 20 18 595
DIN 808-42-K20-128-DG-NI 42 128 41 46 20 18 889
DIN 808-50-K25-108-EG-NI 50 108 54 25 26 1098
DIN 808-50-K25-163-DG-NI 50 163 54 55 25 26 1606

Additional information

Assembly

– Execution <STRONG>B</STRONG>: plain holes. <BR>- Execution <STRONG>K</STRONG>: holes with DIN 6885/1 keyway.

Example 1

Output to be transferred N = 0.65 kW <BR>R.p.m. n = 230 min-1 <BR>Angle of inclination ß = 10° <BR>Correction coefficient k = 1 <BR>Indicative output N' = Nominal output N <BR>Intersection point P is arrived at from 0.65 kW and 230 min-1 (which corresponds to a torque of 27 Nm). <BR>The next size up universal joint corresponding to point P is in the model with a diameter d1 = 25.

Example 2

Torque to be tranferred M = 27 Nm <BR>R.p.m. n =230 min-1 <BR>Angle of inclination ß = 30° <BR>Correction coefficient k = 2.25 <BR>Indicative torque M' = 2.25 x 27 Nm = 61 Nm <BR>Intersection point P1 is arrived at from 61 Nm and 230 min-1 (which is equivalent to an indicative output N' = 1.47 kW). <BR>The next size up universal joint corresponding to P1 is the model with a diameter d1 = 36.

Features and applications

DIN 808 G-NI universal joints with friction bearing are known for their precision. They have minimal play and are long lasting. Since the moveable parts are not surface treated, i.e. not case hardened, the possibilities of application of these universal joints are much more limited compared to the ones made of standard steel. Therefore, the guide lines for the selection of universal joints with friction bearing according to the diagram may be applied at a limited extent only. Rotational speeds over 200 min may become critical. For continuous use of this universal joints, ample lubrication is very important. This achieved by fitting the joint with a grease filled gaiter GN 808.1. <BR>AISI 431 stainless steel, thanks to its high resistance to corrosion, allows the application of these adjustable handles on machines and equipment in those sectors where laws or particular hygienic, climatic and environmental factors make it mandatory to use corrosion resistant materials.

Material

AISI 431 stainless steel.

Special executions on request (For sufficient quantities)

– Execution <STRONG>V</STRONG>: square holes.

Standard executions available

– Execution <STRONG>EG</STRONG>: single body with friction bearing. <BR>- Execution <STRONG>DG</STRONG>: double body with friction bearing.

Technical data

The table shows the transferable output N and/or torques M of universal joints DIN 808, type EG (single friction bearing) in relation to the r.p.m. (n). The values are only applicable to a constant speed of rotation, constant load and an operating inclination angle of max 10°. They are not applicable to stainless steel universal joints. <BR>For larger inclination angles ß a nominal output N' increased by the correction coefficient k and/or a nominal torque M' has to be selected (see example below). <BR>Conversion formulae:

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