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BMT 6309 Deep Groove Ball Bearing - Bore 45 mm OD 100 mm
Bore (d) 45 mm
Outer Dia (D) 100 mm
Width (B/T) 25 mm
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Deep Groove Ball Bearing

BMT 6309 Bearing

Precision Metric Industrial Specification • High Speed & Load Dynamic Tolerances

Bore (d) 45 mm
Outer Dia (D) 100 mm
Width (B) 25 mm
Dyn Load (Cr) 53 kN
ITC-HS Code 8482.10.00
Speed Limit 7000 RPM
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Metric Engineering Datasheet

Standard dimensional tolerances and load ratings for model 6309:

Bearing NO. 6309
I.D (d) mm 45
I.D (d) inch 1.7717
O.D (D) mm 100
O.D (D) inch 3.937
Width (B) mm 25
Width (B) inch 0.9843
Load Cr (KN) 53
Load Cor (KN) 32
Ball Qty 8
Ball Size (mm) 17.462
Grease Speed 7000
Oil Speed 8200
Weight (KG) 0.833

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.

2RS Dual Contact Rubber Seals

NBR synthetic rubber seals bonded to a steel insert. Maximum sealing barrier against fine dust, slurry, moisture, and liquid splash. Pre-lubricated with premium industrial grease for maintenance-free life.

ZZ Dual Metal Dust Shields

Dual pressed sheet steel shields providing protection against foreign particulates and debris while delivering zero contact friction penalty for maximum limiting RPM.

Open Configuration

Unshielded open construction engineered for internal transmission casings, gearboxes, and circulating oil-bath systems.

Radial Clearances (CN / C3)

Available in Normal Radial Clearance (CN) for standard ambient operation and C3 Greater Clearance for electric motors and thermal expansion.

Electric Motors & Generators
Automotive Gearboxes & Alternators
Pumps & Industrial Fans
Consumer Appliances
Agricultural Machinery
Conveyors & Material Handling
Engineering Guide

Deep Groove Ball Bearing Suffix & Nomenclature Guide

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

2RS / 2RS1 Contact rubber seals on both sides
ZZ / 2Z Metal dust shields on both sides
C3 Radial internal clearance greater than normal
P6 / P5 ISO Class 6 / Class 5 precision running tolerance
NR Snap ring and retaining groove on outer ring
M / MA Machined solid brass cage (high speed & vibration)
FAQ

Frequently Asked Questions for Bearing 6309

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

What are the exact dimensional parameters for bearing 6309?
The standard metric dimensions for bearing 6309 are a Bore Diameter (d) of 45 mm, Outer Diameter (D) of 100 mm, and a Width (B/T) of 25 mm 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 6309?
Bearing 6309 is rated for a Dynamic Load (Cr) of 53 kN and Static Load (Cor) of 32 kN with limiting speed of 7000 RPM.
Can I order bearing 6309 with custom clearance (C3) or high-temperature grease?
Yes. BMT Impex maintains ready stocks of bearing 6309 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).
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