Weaving Loom Spares & Industrial Bearings Specialist
AS
AMMAN SPARES
Loom Spares & Industrial Bearings
6304
Representative Schematic
ISO Standard Metric Envelope: d=20mm × D=52mm × B=15mm
Bore Diameter (d)
20 mm
Outer Diameter (D)
52 mm
Width (B)
15 mm
Deep Groove Ball BearingsAvailable to ArrangeISO 15:2017 / DIN 625-1

6304 Deep Groove Ball Bearing (20 × 52 × 15 mm)

The 6304 bearing features a 20 mm bore, 52 mm OD, and 15 mm width. Features larger rolling elements for higher dynamic load capacity and shock resistance than the 6204 series.

Technical Specifications (ISO Standard)

Base Part Number6304
Series Category6300 (Deep Groove Ball Bearings)
Boundary Dimensions20 × 52 × 15 mm
Dynamic Load Rating (Cr)15.9 kN
Static Load Rating (C0r)7.8 kN
Reference Speed (Grease/Oil)17,000 RPM (Ref)
Reference Mass (Approx.)0.144 kg
Cage / Retainer MaterialPressed Sheet Steel

Available Variants & Configurations

Standard & Special Sourcing
6304Open

Open unsealed configuration for 6304 bearing. Requires external lubrication in clean enclosed oil/grease housings.

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6304-ZZMetal Shield (ZZ)

Dual pressed-steel non-contact shields for 6304. Retains grease and blocks coarse debris without adding frictional torque.

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6304-2RSRubber Contact Seal (2RS)

Dual synthetic NBR rubber contact seals for 6304. Maximum protection against dust, lint, moisture, and fine particle ingress.

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6304-C3OpenC3 (Increased)

6304 with C3 increased radial internal clearance. Designed for high thermal expansion, tight shaft interference fits, and elevated operating temperatures.

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6304-2RS-C3Rubber Contact Seal (2RS)C3 (Increased)

6304 dual rubber sealed bearing with C3 internal clearance. Ideal for high-speed electric motors and textile equipment operating under heat.

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6304-P6OpenP6 (ISO Class 6)

6304 high-precision bearing conforming to ISO Tolerance Class 6 for low-runout, high-accuracy spindle and machine applications.

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Brand Preference & Sourcing Flexibility

Amman Spares can arrange standard industrial equivalents or specific brand requests (such as SKF, NSK, FAG, NTN, KOYO, TIMKEN, or certified export brands) subject to current supplier confirmation. Mention your brand preference in the request form.

Common Industrial & Textile Machinery Applications for 6304

Heavy Electric Motors
Loom Crankshaft Drives
Agricultural Implements
Gearboxes
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