What are the exact dimensional parameters, tolerances and customs HS code for bearing 634?

The standard metric dimensions for bearing 634 are a Bore Diameter (d) of 4 mm, Outer Diameter (D) of 16 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 634?

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 634?

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 634 Miniature Ball Bearing - Bore 4 mm OD 16 mm

Bore (d) 4 mm

Outer Dia (D) 16 mm

Width (B/T) Standard Width

Miniature Ball Bearing

BMT 634 Bearing

Q: What are the dynamic and static load ratings for bearing 634?

Bearing 634 is rated for a Dynamic Load (Cr) of 576 kN and Static Load (Cor) of 203 kN with limiting speed of 59400 RPM.

Precision Metric Industrial Specification • High Speed & Load Dynamic Tolerances

Bore (d) 4 mm

Outer Dia (D) 16 mm

Width (B) Standard Width

Dyn Load (Cr) 576 kN

ITC-HS Code 8482.10.00

Speed Limit 59400 RPM

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Metric Engineering Datasheet

Standard dimensional tolerances and load ratings for model 634:

Bearing No.	634
outer diameter (mm)	4
outer diameter (inch)	0.157
inner diameter (mm)	16
inner diameter (inch)	0.63
thinkness (mm)	5
thinkness (inch)	0.197
Load Rating Cr (N)	576
Load Rating Cor (N)	203
Max Speed Oil (r/min)	59400
Reference Weight (kg)	0.78

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.

ZZ Miniature Metal Shields

Ultra-thin precision pressed metal shields retaining micro-grease lubrication while preserving extremely low rotational torque in high-RPM miniature devices.

2RS Miniature Rubber Seals

Precision molded contact rubber seals protecting internal miniature ball raceways against dust, humidity, and atmospheric contaminants.

Flanged Outer Ring Option (F Series)

Outer ring with integrated locating flange to prevent axial movement in thin-wall housings, sheet metal brackets, and robotic chassis.

Stainless Steel (AISI 440C / SS)

Corrosion-resistant martensitic stainless steel construction for medical instruments, food processing, dental tools, and cleanroom environments.

Medical & Dental Drills

Precision Robotics & Servos

High-Speed Cooling Fans

Optical & Laboratory Instruments

Drone & Avionics Systems

Micro Machinery

Engineering Guide

Miniature Ball Bearing Suffix & Nomenclature Guide

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

ZZ Dual miniature metal dust shields

2RS Dual miniature contact rubber seals

F Flanged outer ring for easy axial location

SS / S AISI 440C stainless steel rings and balls

P5 / ABEC-5 High precision grade for low runout and high RPM

C3 Internal radial clearance for high-speed micro motors

FAQ

Frequently Asked Questions for Bearing 634

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

What are the exact dimensional parameters for bearing 634?

The standard metric dimensions for bearing 634 are a Bore Diameter (d) of 4 mm, Outer Diameter (D) of 16 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 634?

Bearing 634 is rated for a Dynamic Load (Cr) of 576 kN and Static Load (Cor) of 203 kN with limiting speed of 59400 RPM.

Can I order bearing 634 with custom clearance (C3) or high-temperature grease?

Yes. BMT Impex maintains ready stocks of bearing 634 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).