DKFL 5300 2RS C3 Angular Contact Ball Bearing
The DKFL 5300 2RS C3 bearing (also internationally recognized by its equivalent designation 3300 2RS C3) belongs to the category of Double Row Angular Contact Ball Bearings. This internal structure comprises two precision-engineered rows of steel balls arranged in a configuration equivalent to a back-to-back (DB) pair of single-row angular contact bearings. It delivers the capacity to simultaneously support heavy radial loads, bidirectional axial loads, and outstanding resistance to tilting moments and bending stress within minimal axial space.
10060101640
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Product Detail
Double Row Angular Contact Ball Bearing DKFL 5300 2RS C3 (3300 2RS) Handles Heavy Bi-Directional Axial & Radial Loads | 10mm Bore | C3 Radial Internal Clearance | Dual Rubber Seals
Compact and robust design equivalent to a back-to-back pair of single-row angular contact bearings: exceptional resistance to tilting moments, smooth operation at high speeds, and reliable sealing.
Technical Overview of DKFL 5300 2RS C3
The DKFL 5300 2RS C3 bearing (also internationally recognized by its equivalent designation 3300 2RS C3) belongs to the category of Double Row Angular Contact Ball Bearings. This internal structure comprises two precision-engineered rows of steel balls arranged in a configuration equivalent to a back-to-back (DB) pair of single-row angular contact bearings. It delivers the capacity to simultaneously support heavy radial loads, bidirectional axial loads, and outstanding resistance to tilting moments and bending stress within minimal axial space.
The combination of reinforced contact rubber seals on both sides (2RS) and a larger-than-normal internal clearance (C3) makes this component an ideal choice for high-speed rotating machinery, elevated temperature environments subject to thermal expansion, and applications requiring a maintenance-free service life.
Part Number Breakdown (DKFL 5300 2RS C3)
5: Standard designation prefix for double row angular contact ball bearings (equivalent to code 3 in ISO standards, e.g., 3300).
3: Heavy duty dimension series (Series 3); indicating thicker rings, wider cross-section (19mm), and reinforced ball complement compared to light series 5200.
00: Global standard bore size code corresponding exactly to a 10 mm bore diameter.
2RS: Equipped with two nitrile rubber (NBR) reinforced contact seals with internal metal skeletons on both sides; completely prevents the ingress of moisture and fine dust while retaining grease over long operational periods.
C3: Radial internal clearance greater than normal; effectively prevents premature binding caused by thermal expansion of the rings and shaft under high operating speeds.
DKFL: Specialized industrial brand under quality control and official distribution by Kamyar Gostar Iranian Company (KGICO).
Technical & Dimensional Specifications
| Bore Diameter (d) | Outer Diameter (D) | Width (B) | Ball Row Structure | Clearance Class | Sealing Type | Material |
|---|---|---|---|---|---|---|
| 10 mm | 35 mm | 19 mm | Double Row | C3 (Loose) | 2RS (Dual Rubber) | 100Cr6 Chrome Steel |
Engineering Comparison Guide: 5300 vs. 5200 (10mm Bore)
When designing industrial mechanisms with a 10mm shaft diameter, selecting between series 52 and 53 depends on load and envelope constraints:
| Part Number | Bore | Outer Dia. | Width | Analysis & Application Distinction |
|---|---|---|---|---|
| DKFL 5200 2RS | 10mm | 30mm | 14.3mm | Light series; suitable for compact housings with moderate radial/axial loads. |
| DKFL 5300 2RS C3 | 10mm | 35mm | 19mm | Reinforced series; greater outer diameter and width, larger balls, designed for heavy combined loads and tilting moments. |
Competitive Advantages & Engineering Values
Simultaneous Bidirectional Axial Support
Unlike single-row bearings that accept axial loads in only one direction, the 5300 series restrains thrust loads in both forward and reverse directions.
Resistance to Tilting Moments
The dual-row ball layout provides high angular rigidity, preventing deflection and bending of small shafts under unbalanced loads.
C3 Engineering Clearance & Heat Dissipation
Looser initial clearance prevents premature overheating and ball seizure caused by press fits and shaft expansion during continuous operation.
Impenetrable 2RS Sealing
Contact nitrile seals trap lubricating grease inside the bearing and prevent the entry of metal chips, moisture, and abrasive particles.
High-Purity Chrome Steel (100Cr6)
Special heat treatment with stable surface hardness, exceptional wear resistance, and superior fatigue life under continuous cyclic loading.
KGICO Authenticity Assurance
Supplied in original DKFL factory packaging, guaranteeing technical integrity and certified corporate invoicing by Kamyar Gostar Iranian.
Primary Industrial & Equipment Applications
- Small Centrifugal Pumps & Dosing Pumps: Stabilizing impeller axial positioning against reciprocal fluid flows.
- Air Compressors & Compact Blowers: Controlling rotor shaft oscillations under varying pneumatic pressures.
- Packaging & Food Processing Rotary Equipment: Drive rollers and idlers subjected to simultaneous axial and radial loads.
- Specialized Electric Motors & Servo Motors: High-speed positioning systems with guided internal clearance.
- Small Gearboxes & Industrial Agricultural Machinery: Input and output shafts of bevel and helical gear systems.
Installation Guidelines & Maintenance Protocol
When fitting the bearing onto the 10mm shaft, apply mounting force strictly to the face of the inner ring. Never apply impact or press force through the outer ring or rubber seals, as this will deform the 2RS seals and cause Brinelling of the raceways.
This bearing is factory-filled with high-grade lithium-based grease in standard proportions. Strictly avoid washing the bearing with thinners or diesel, and do not remove the 2RS seals; tampering with the seals will lead to grease leakage and a drastic reduction in service life.
Recommended Assembly Tool
Use a mechanical fitting tool kit or manual hydraulic press with a sleeve matching the inner ring diameter to ensure proper installation without stress.
Frequently Asked Questions (FAQ)
1. What is the difference between part numbers 5300 and 3300?
These two codes are completely identical and interchangeable in dimensions (10×35×19 mm) and technical performance; code 5300 is based on legacy/US naming conventions while code 3300 follows standard European ISO naming.
2. What is the benefit of C3 clearance in the 5300 bearing?
The C3 suffix indicates that the internal radial clearance is slightly wider than standard. This allows the bearing to accommodate shaft expansion in high rotational speeds or thermal environments without losing smooth movement or binding.
3. Does this bearing require regreasing during operation?
No; due to the dual-side contact rubber seals (2RS), the DKFL 5300 bearing requires no grease refilling or replacement throughout its entire operational lifecycle.
Purchase & Price Inquiry for DKFL 5300 2RS C3
To check stock availability, receive daily price lists, and place corporate orders, please contact the sales department of Kamyar Gostar Iranian Company (KGICO).
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