What are the exact dimensional parameters, tolerances and customs HS code for bearing 7304?

The standard metric dimensions for bearing 7304 are a Bore Diameter (d) of 20 mm, Outer Diameter (D) of 52 mm, and a Width (B/T) of Standard Width under ITC-HS Customs Code 8482.10.00. Sourced from ISO 9001 certified partner facilities and verified to ABEC-1 precision standards with SAE 52100 chrome steel.

What is the dispatch timeline and export capability for bulk orders of 7304?

We cater to all order sizes from small test batches to wholesale container shipments. Ready stock items ship on the same business day with express courier across India and global container export via Nhava Sheva (JNPT) / Mumbai Air Cargo.

How does BMT Impex ensure quality and test compliance for 7304?

All bearings are sourced exclusively from ISO 9001 certified manufacturing partners and undergo 100% pre-dispatch quality verification at our dedicated in-house testing labs by QC engineers, accompanied by official manufacturer test certificates (MTC).

Partner ISO 9001 In-House Lab QC

BMT 7304 Angular Contact Ball Bearing - Bore 20 mm OD 52 mm

Bore (d) 20 mm

Outer Dia (D) 52 mm

Width (B/T) Standard Width

Angular Contact Ball Bearing

BMT 7304 Bearing

Q: What are the dynamic and static load ratings for bearing 7304?

Bearing 7304 is rated for a Dynamic Load (Cr) of 15900 kN and Static Load (Cor) of 7800 kN with limiting speed of 15,000 RPM.

Precision Metric Industrial Specification • High Speed & Load Dynamic Tolerances

Buy genuine BMT 7304 Angular Contact Ball Bearing online. Precision metric dimensions (Bore: 20 mm, OD: 52 mm, Width: Standard Width, ITC-HS Code: 8482.10.00). Authorized industrial importer & distributor BMT Impex supplies precision bearings sourced from ISO 9001 certified manufacturing partners with 100% in-house testing lab QC verification, wholesale pricing, and express delivery across India and global export.

Bore (d) 20 mm

Outer Dia (D) 52 mm

Width (B) Standard Width

Dyn Load (Cr) 15900 kN

ITC-HS Code 8482.10.00

Speed Limit 15,000 RPM

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Metric Engineering Datasheet

Standard dimensional tolerances and load ratings for model 7304:

Bearing No.	7304
outer diameter (mm)	52
outer diameter (inch)	2.0472
inner diameter (mm)	20
inner diameter (inch)	0.7874
thinkness (mm)	15
thinkness (inch)	0.5906
Load Rating Cr (N)	15900
Load Rating Cor (N)	7800
Max Speed Oil (r/min)	15,000
Reference Weight (kg)	0.15

SAE 52100 Grade Steel

Manufactured from ultra-clean high-carbon chromium steel (100Cr6), hardened to 60-64 HRC for exceptional fatigue life and resistance to subsurface cracking.

In-House QC & Testing Labs

100% pre-dispatch quality verification performed at our dedicated in-house testing laboratories by qualified QC engineers for dimensional runout, radial clearance, and noise testing.

Precision Class (P0 / P6 / P5)

Standard ABEC-1 (ISO Normal / P0) tolerance with optional P6/P5 precision grades for ultra-low vibration (V2/V3) and high rotational accuracy.

Thermal Stabilization

Dimensionally stabilized for continuous operating temperatures from -30°C to +120°C (standard), with high-temperature synthetic grease available up to +180°C.

Radial Clearance (CN / C3)

Available in Standard Normal Clearance (CN) for steady ambient operating environments or C3 Greater Clearance for thermal expansion.

Global Export & Trade Fairs

Export packaging ready for international supply via Nhava Sheva (JNPT) & Mumbai Air Cargo with upcoming planned participation in premier international trade expos.

Contact Angles (40° B vs 25° AC vs 15° C)

Contact angles define performance: 40° (Suffix B) for maximum axial thrust rigidity; 25° (Suffix AC) and 15° (Suffix C) for ultra-high-speed machine tool spindles.

Duplex Preloaded Pairs (DB / DF / DT)

Universally matchable sets arranged Back-to-Back (DB) for high moment rigidity, Face-to-Face (DF) for housing misalignment, or Tandem (DT) for doubled thrust.

Super-Precision Classes (P5 / P4)

Manufactured to tight dimensional tolerances with ultra-smooth superfinished raceways for minimal thermal growth in CNC spindle assemblies.

Machined Brass & Polyamide Cages

Available with ball-guided machined brass cages (M/MA) or lightweight reinforced polyamide cages (TVP) for low centrifugal forces at high RPM.

CNC High-Speed Spindles

Centrifugal & Turbo Pumps

Industrial Compressors

High Precision Lathes

Racing & Automotive Drivetrains

High-Speed Printing Cylinders

Engineering Guide

Angular Contact Ball Bearing Suffix & Nomenclature Guide

Standard manufacturing suffixes for Angular Contact Ball Bearing series when placing bulk orders or cross-referencing OEM parts:

B 40° Contact angle for heavy axial thrust

AC 25° Contact angle for high-speed operation

C 15° Contact angle for high-speed CNC spindles

DB / DF Matched duplex pair mounted Back-to-Back / Face-to-Face

DT Matched duplex pair mounted in Tandem (unidirectional)

P5 / P4 Super-precision spindle grade tolerance

FAQ

Frequently Asked Questions for Bearing 7304

Everything you need to know regarding specifications, tolerances, delivery, and quality assurance:

What are the exact dimensional parameters for bearing 7304?

The standard metric dimensions for bearing 7304 are a Bore Diameter (d) of 20 mm, Outer Diameter (D) of 52 mm, and a Width (B/T) of Standard Width under ITC-HS Code 8482.10.00. Detailed dynamic and static load ratings are outlined in the datasheet above.

What are the dynamic and static load ratings for bearing 7304?

Bearing 7304 is rated for a Dynamic Load (Cr) of 15900 kN and Static Load (Cor) of 7800 kN with limiting speed of 15,000 RPM.

Can I order bearing 7304 with custom clearance (C3) or high-temperature grease?

Yes. BMT Impex maintains ready stocks of bearing 7304 in Standard Normal clearance (CN), C3 (extra clearance for thermal expansion), and specialty grease configurations for continuous industrial operation.

What is the minimum order quantity (MOQ) and dispatch timeline?

We supply both sample batch quantities and full wholesale container loads. Standard stock items ship on the same day with express logistics and pan-India freight coverage across all 28 states.

Are material test certificates and quality inspection reports provided?

Yes, all BMT shipments are sourced from ISO 9001 certified partner facilities and verified at our in-house testing labs by dedicated QC engineers, complete with manufacturer test certificates (MTC).

Engineering Parameter	Metric Value / Tolerance	Standard Reference / Quality Criteria
Bore Diameter (d)	20 mm	ISO 15 Normal / ABEC-1 Tolerance
Outside Diameter (D)	52 mm	ISO 15 Normal / ABEC-1 Tolerance
Width / Assembly Height (B/T)	Standard Width	ISO 15 Dimensional Standard
Basic Dynamic Load Rating (Cr)	15900 kN	ISO 281 Rating Life Equation
Basic Static Load Rating (Cor)		ISO 76 Static Capacity Criteria
Reference Limiting Speed	15,000 RPM	Continuous Duty Lubricated Rotation
Customs Harmonized Classification	8482.10.00	ITC-HS Industrial Machinery Component
Alloy & Metallurgy Specification	High-Carbon Chromium Steel (GCr15)	Vacuum Degassed, 58–62 HRC Core Hardness
Radial Internal Clearance	CN (Standard Normal) / C3 (Available)	ISO 5753 Clearance Standard
Precision Running Accuracy	ISO Class Normal (ABEC-1 / P0)	ABEC-3 (P6) High-Precision Available Upon Request
Quality Inspection & Certification	100% Pre-Dispatch Laboratory Tested	Manufacturer Test Certificate (MTC EN 10204 3.1)