JNS IR — existing illustrative photograph of the inner-ring family
JNS IR172120 — our own dimensional diagram d F B

IR 17x21x20 Inner ring JNS - 1 pcs.

JNS
zł18.40 Grosszł14.96 Net
zł13.16 Net zł16.19 Gross price with code PROMO
Lowest price since sales began before the promotion: zł14.96 Net zł18.40 Gross

Inner ring JNS IR172120, IR series without lubrication hole. Dimensions d×F×B: 17×21×20 mm. Sales unit: 1 piece.

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1 day
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Weight:
0,15 kg
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JNS IR — existing illustrative photograph of the inner-ring family

Inner ring JNS IR172120

JNS IR-series needle roller bearing inner ring, with dimensions 17 × 21 × 20 mm. Manufacturer designation: IR172120.

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 IR172120.

JNS IR172120 — our own dimensional diagram d F B

Catalogue dimensions

d — bore diameter: 17 mm; catalogue deviations 0 / -0,008 mm

F — outside diameter: 21 mm

B — width: 20 mm

rₛ min — minimum chamfer dimension: 0,3 mm

da — abutment diameter according to catalogue: min 19 mm, max 20 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 IR172120, IR series. The dimensional designation of this variant is IR 17×21×20.

What dimensions and bore deviations does this ring have?

Bore diameter d is 17 mm, outside diameter F 21 mm and width B 20 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 IR172120.

  • Brand
  • Reference
    KAT24396_n
  • Waga
    0,15 kg
  • In stock
    1000 Items

  • Sales unit
    1 pc
  • Component type
    Needle roller bearing inner ring
  • Width B
    20 mm
  • Manufacturer
    JNS
  • Bore diameter d
    17 mm
  • Manufacturer designation
    IR172120
  • Series
    IR
  • Catalogue deviations d
    0 / -0,008 mm
  • Outside diameter F
    21 mm
  • Chamfer dimension rₛ min
    0,3 mm
  • Abutment diameter da according to catalogue
    min 19 mm; max 20 mm
  • Lubrication hole
    None
  • Treatment
    Heat treatment
  • Surface finish
    Fine grinding
  • End face edges
    Chamfered

Workplace safety warnings — in accordance with Regulation (EU) 2023/988 on general product safety:
1. Eye protection:
– Always wear safety goggles or a face shield to protect your eyes from sparks, particles and metal fragments.
2. Hearing protection:
– When working in a noisy environment, use ear defenders or earplugs to prevent hearing damage.
3. Respiratory protection:
– When working in dusty surroundings or in the presence of fumes, wear a filtering mask or an appropriate respirator.
– Ensure proper ventilation of the workstation.
4. Hand and skin safety:
– Use protective gloves that protect against mechanical injuries and chemicals.
– Where necessary, use protective creams to prevent irritation and dry skin.
5. Work clothing:
– Work in protective clothing resistant to sparks and splashes.
– Avoid loose clothing, jewellery and loose hair near machinery.
6. Fire risk:
– Keep the workstation free of flammable materials (e.g. paper, fabrics and chemicals).
– Keep a serviceable fire extinguisher close at hand and know how to use it.
7. Electrical hazards:
– Check the condition of cables and electrical equipment before use.
– Do not use electrical devices in damp conditions.
– Disconnect equipment from the power supply during maintenance or repairs.
8. Use of machinery and tools:
– Regularly inspect the technical condition of machines and tools.
– Use equipment in accordance with the manufacturer's instructions.
– Blades and tools should be maintained regularly and kept in good condition.
– Machines should be fitted with appropriate guards and protective devices.
9. Handling materials:
– Use handling equipment to move heavy components.
– Lift and carry using ergonomic practices to avoid injury.
10. Working with chemicals:
– Store chemicals in labelled, safe containers.
– Use substances in accordance with the manufacturer's instructions and occupational health and safety rules.
– Ensure air circulation when using chemicals.
Other important rules:
– Keep the workstation clean and tidy.
– Ensure adequate lighting in the working area.
– Provide occupational health and safety training.
– Carry out regular safety audits and comply with current regulations.

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