Metric Size, Plastic
Ball Knobs
Press-on Type

EN 319.1

Elesa Model S.N


RoHS Compliant

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Specification
Information

Knob: Plastic, Duroplast (Phenolic PF), black shiny finish
Bushing: Technopolymer plastic (Polyamide PA)

Shipping

Elesa® original design plastic ball knobs.  
EN 319.1 ball knobs do not require a thread on the shaft.
During mounting, easy blows with a soft hammer are sufficient to drive the knob into place; the shaft end should be slightly rounded or chamfered (30°).
The bore is conical which guarantees a firm press on operation.
The polyamide bushing provides good holding force even with a shaft tolerance of h11. The knobs are resistant to vibrations and may be re-assembled any time.
Maximum heat resistance of plastic knob: 110° C (230° F).
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Dimensions in:

millimeters
(inches)

Part Number d1 d2
Bore
t d3 h~
319.1-20-B6-B
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20
(.79)
B 6 13
(.51)
7
(.28)
19
(.75)
319.1-25-B6-B
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25
(.98)
B 6 14
(.55)
10
(.39)
24
(.94)
319.1-25-B8-B
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25
(.98)
B 8 14
(.55)
10
(.39)
24
(.94)
319.1-30-B8-B
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30
(1.18)
B 8 14
(.55)
15
(.59)
28
(1.10)
319.1-30-B10-B
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30
(1.18)
B 10 18
(.71)
15
(.59)
28
(1.10)
319.1-35-B8-B
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35
(1.38)
B 8 14
(.55)
15
(.59)
33
(1.30)
319.1-35-B10-B
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35
(1.38)
B 10 18
(.71)
15
(.59)
33
(1.30)
319.1-40-B10-B
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40
(1.57)
B 10 18
(.71)
15
(.59)
38
(1.50)
319.1-40-B12-B
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40
(1.57)
B 12 21
(.83)
15
(.59)
38
(1.50)
319.1-45-B12-B
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45
(1.77)
B 12 21
(.83)
21
(.83)
42.5
(1.67)
319.1-45-B14-B
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45
(1.77)
B 14 24
(.94)
21
(.83)
42.5
(1.67)
319.1-50-B12-B
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50
(1.97)
B 12 21
(.83)
21
(.83)
47.5
(1.87)
319.1-50-B14-B
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50
(1.97)
B 14 24
(.94)
21
(.83)
47.5
(1.87)
319.1-50-B16-B
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50
(1.97)
B 16 28
(1.10)
21
(.83)
47.5
(1.87)