What are the exact dimensional parameters, tolerances and customs HS code for bearing NA 4906?

The standard metric dimensions for bearing NA 4906 are a Bore Diameter (d) of 30 mm, Outer Diameter (D) of 47 mm, and a Width (B/T) of 18 mm under ITC-HS Customs Code 8482.40.00. 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 NA 4906?

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 NA 4906?

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 NA 4906 Needle Roller Bearing - Bore 30 mm OD 47 mm

Bore (d) 30 mm

Outer Dia (D) 47 mm

Width (B/T) 18 mm

Needle Roller Bearing

BMT NA 4906 Bearing

Q: What are the dynamic and static load ratings for bearing NA 4906?

Bearing NA 4906 is rated for a Dynamic Load (Cr) of 24.8 kN and Static Load (Cor) of 36.5 kN with limiting speed of 10,000 RPM.

Precision Metric Industrial Specification • High Speed & Load Dynamic Tolerances

Bore (d) 30 mm

Outer Dia (D) 47 mm

Width (B) 18 mm

Dyn Load (Cr) 24.8 kN

ITC-HS Code 8482.40.00

Speed Limit 10,000 RPM

Chat on WhatsApp

Metric Engineering Datasheet

Standard dimensional tolerances and load ratings for model NA 4906:

Bearing Model	NA 4906
Bore (d)	30 mm
Outer Dia (D)	47 mm
Width (C)	18 mm
Dynamic Load (Cr)	24.8 kN
Static Load (Cor)	36.5 kN
Limiting Speed (Grease)	10,000 RPM
Needle Roller Length	Solid Machined

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.

HK Drawn Cup (Open Ends)

Thin-walled, deep-drawn outer ring with open ends. Maximum load carrying capacity and stiffness in the smallest radial spatial envelope.

BK Drawn Cup (Closed End)

Drawn cup outer ring with one closed end for shaft end locations, sealing off the shaft extremity against contaminants.

RS / 2RS Integrated Lip Seals

Available with synthetic rubber contact seals on one or both ends for drawn cup bearings to prevent grease loss in compact spaces.

Solid Ring Needle Bearings (NK / NKI)

Heavy-duty machined outer ring with lubrication groove and holes, available with or without inner ring for hardened shaft journals.

Automotive Transmissions

Engine Valve Rocker Arms

Hydraulic & Gear Pumps

Power Tools & Handheld Equipment

Packaging & Printing Machines

Textile Machinery

Engineering Guide

Needle Roller Bearing Suffix & Nomenclature Guide

Standard manufacturing suffixes for Needle Roller Bearing series when placing bulk orders or cross-referencing OEM parts:

HK Drawn cup needle roller bearing with open ends

BK Drawn cup needle roller bearing with closed end

RS / 2RS Single / Dual integrated contact lip seals

TN / TV Glass fiber reinforced polyamide 66 cage

ZW Double-row needle roller and cage assembly

NK / NKI Machined solid ring needle roller bearing

FAQ

Frequently Asked Questions for Bearing NA 4906

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

What are the exact dimensional parameters for bearing NA 4906?

The standard metric dimensions for bearing NA 4906 are a Bore Diameter (d) of 30 mm, Outer Diameter (D) of 47 mm, and a Width (B/T) of 18 mm under ITC-HS Code 8482.40.00. Detailed dynamic and static load ratings are outlined in the datasheet above.

What are the dynamic and static load ratings for bearing NA 4906?

Bearing NA 4906 is rated for a Dynamic Load (Cr) of 24.8 kN and Static Load (Cor) of 36.5 kN with limiting speed of 10,000 RPM.

Can I order bearing NA 4906 with custom clearance (C3) or high-temperature grease?

Yes. BMT Impex maintains ready stocks of bearing NA 4906 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).