IR 17x20x30,5 Inner ring JNS - 1 pcs.
Inner ring JNS IR172030.5, IR series without lubrication hole. Dimensions d×F×B: 17×20×30,5 mm. Sales unit: 1 piece.

Inner ring JNS IR172030.5
JNS IR-series needle roller bearing inner ring, with dimensions 17 × 20 × 30,5 mm. Manufacturer designation: IR172030.5.
Design
The IR variant is made without a lubrication hole. The JNS catalogue describes rings in this series as heat-treated and precision-ground, with chamfered edges on the end faces.
Sales unit
One sales unit includes 1 inner ring JNS IR172030.5.

Catalogue dimensions
d — bore diameter: 17 mm; catalogue deviations 0 / -0,008 mm
F — outside diameter: 20 mm
B — width: 30,5 mm
rₛ min — minimum chamfer dimension: 0,3 mm
da — abutment diameter according to catalogue: min 19 mm, max 19 mm
The photograph shows the JNS ring family. The diagram shows catalogue dimensions; it is not a production drawing.
Questions and answers
How can the correct JNS variant be identified?
The manufacturer designation is IR172030.5, IR series. The dimensional designation of this variant is IR 17×20×30,5.
What dimensions and bore deviations does this ring have?
Bore diameter d is 17 mm, outside diameter F 20 mm and width B 30,5 mm. The catalogue states deviations of 0 / -0,008 mm for d.
Does this variant have a lubrication hole?
No. The ring belongs to the IR series, which the JNS catalogue identifies as a design without a lubrication hole.
What does one sales unit include?
One sales unit includes 1 inner ring JNS IR172030.5.
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Jednostka sprzedaży1 szt.
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Rodzaj elementuPierścień wewnętrzny łożyska igiełkowego
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Szerokość B30,5 mm
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ProducentJNS
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Średnica otworu d17 mm
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Oznaczenie producentaIR172030.5
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SeriaIR
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Odchyłki katalogowe d0 / -0,008 mm
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Średnica zewnętrzna F20 mm
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Wymiar sfazowania rₛ min0,3 mm
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Średnica przylegania da wg katalogu19 mm
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Otwór smarowyBrak
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ObróbkaObróbka cieplna
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Wykończenie powierzchniDokładne szlifowanie
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Krawędzie powierzchni czołowychSfazowane
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Kraj pochodzenia wg dostawcyJaponia

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