SKF 6304-2RSH 20x52x15 Deep Groove Ball Bearing
114 pcs.
€3.10
(net)
Price for: 1pcs.
SKF 6304-2RSH 20x52x15 is a single-row deep groove ball bearing with contact seals on both sides and Normal CN radial internal clearance. Dimensions: d = 20 mm, D = 52 mm, B = 15 mm. Its deep groove design accommodates radial and axial loads in both directions. C = 16.8 kN, C0 = 7.8 kN, Pu = 0.335 kN; limiting speed 9,500 r/min.
Warehouse and Store:
Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.
SKF 6304-2RSH is a single-row deep groove ball bearing measuring 20x52x15 mm. Its bore diameter d is 20 mm, outside diameter D is 52 mm and width B is 15 mm. The 2RSH configuration has contact seals on both sides, while the standard version uses Normal radial internal clearance.
SKF 6304-2RSH - Product Characteristics
SKF 6304-2RSH belongs to the 63 dimensional series of single-row deep groove ball bearings. The commercial term SKF 6304 2RS is widely used, but 6304-2RSH is the more precise SKF designation for this sealed configuration.
Verified technical data:
Manufacturer / Brand: SKF
Designation: 6304-2RSH
Commercial designation: 6304 2RS
Bearing type: Single-row deep groove ball bearing
Dimensions: 20x52x15 mm
d - Bore diameter: 20 mm
D - Outside diameter: 52 mm
B - Width: 15 mm
Number of rows: 1
Bore type: Cylindrical
Sealing: Both sides
Seal type: Contact
Radial internal clearance: CN / Normal
Cage: Sheet metal
Bearing material: Bearing steel
Lubrication: Grease
Basic dynamic load rating C: 16.8 kN
Basic static load rating C0: 7.8 kN
Fatigue load limit Pu: 0.335 kN
Limiting speed: 9,500 r/min
SKF performance class: SKF Explorer
Mass: approximately 0.15 kg.
Dimensions
The principal dimensions of SKF 6304-2RSH are:
d - Bore Diameter: 20 mm
D - Outside Diameter: 52 mm
B - Width: 15 mm
Commercial Size: 20x52x15 mm
For this bearing, 20x52x15 mm corresponds to d x D x B. SKF data confirm these dimensions for the exact 6304-2RSH reference.
The bore code 04 corresponds to a nominal bore diameter of 20 mm.
Bearing Construction
SKF 6304-2RSH is a non-separable, single-row deep groove ball bearing.
The balls operate between deep raceway grooves in the inner and outer rings. This geometry enables the bearing to accommodate primarily radial loads while also supporting axial loads acting in both directions.
The exact configuration uses a cylindrical bore and a sheet-metal cage. SKF classifies this bearing as an SKF Explorer product.
2RSH Contact Seals
The suffix 2RSH identifies the sealing arrangement.
For SKF 6304-2RSH, the bearing has contact seals on both sides.
The seals help retain grease inside the bearing and restrict the ingress of contamination into the rolling contact area.
This differs from 6304-2Z, which uses non-contact metal shields. Both versions share the same principal dimensions but are not technically identical.
CN Radial Internal Clearance
The standard SKF 6304-2RSH uses Normal CN radial internal clearance.
This distinguishes it from:
SKF 6304-2RSH/C3
which has C3 radial internal clearance greater than Normal. The C3 version is a separate bearing configuration and should not be merged with the standard CN product.
Therefore:
6304-2RSH ≠ 6304-2RSH/C3
when the required internal clearance is part of the machine specification.
Load Ratings and Operating Principle
SKF specifies the following values for 6304-2RSH:
C - Basic Dynamic Load Rating: 16.8 kN
C0 - Basic Static Load Rating: 7.8 kN
Pu - Fatigue Load Limit: 0.335 kN.
The deep groove raceway geometry allows the bearing to accommodate radial loads and axial loads acting in both directions.
C, C0 and Pu are engineering catalogue values used for bearing selection and life calculations. They should not be interpreted as simple universal maximum permissible loads for every installation.
Limiting Speed
For SKF 6304-2RSH, SKF catalogue data specify:
Limiting Speed: 9,500 r/min.
The SKF rolling-bearing catalogue does not list a separate reference speed for this exact 2RSH configuration in the cited table, so no reference-speed value from another 6304 variant is assigned here.
Actual permissible operating speed depends on load, lubrication, fits, temperature and the overall bearing arrangement.
Meaning of 6304-2RSH
The designation identifies the product configuration:
6 - deep groove ball bearing
63 - dimensional series
04 - bore code corresponding to 20 mm
2RSH - contact seals on both sides
Because there is no C3 suffix in this designation, the standard product should not be described as a C3 bearing.
For precise technical identification, the recommended product designation is:
SKF 6304-2RSH
while SKF 6304 2RS may remain in the text as a common commercial search term.
SKF 6304-2RSH vs 6304-2RSH/C3
Both variants have:
d = 20 mm
D = 52 mm
B = 15 mm
contact seals on both sides
The key difference is radial internal clearance:
6304-2RSH: CN / Normal
6304-2RSH/C3: C3 / greater than Normal.
These should therefore remain separate technical product variants.
SKF 6304-2RSH vs 6304-2Z
Both bearings measure 20x52x15 mm, but their closure designs differ.
6304-2RSH: contact seals on both sides
6304-2Z: non-contact metal shields on both sides
SKF also lists different limiting speeds: 9,500 r/min for 6304-2RSH and 15,000 r/min for 6304-2Z.
For this reason, identical dimensions alone do not confirm technical equivalence.
Selection and Interchangeability
When selecting a replacement for SKF 6304-2RSH, compare the complete technical configuration, particularly the 20 mm bore, 52 mm outside diameter, 15 mm width, double contact seals, Normal CN clearance, load ratings and speed requirement.
A bearing described only as 6304 2RS 20x52x15 from another manufacturer should not automatically be considered a complete equivalent without checking seal design, internal clearance and performance data.
Technical Specification
Manufacturer / Brand: SKF
Designation: 6304-2RSH
Commercial Designation: 6304 2RS
Product Type: Deep groove ball bearing
Construction: Single row
Series: 63
Dimensions: 20x52x15 mm
d - Bore Diameter: 20 mm
D - Outside Diameter: 52 mm
B - Width: 15 mm
Bore Type: Cylindrical
Sealing: Both sides
Seal Type: Contact
Radial Internal Clearance: CN / Normal
Cage: Sheet metal
Bearing Material: Bearing steel
Lubrication: Grease
Basic Dynamic Load Rating C: 16.8 kN
Basic Static Load Rating C0: 7.8 kN
Fatigue Load Limit Pu: 0.335 kN
Limiting Speed: 9,500 r/min
Performance Class: SKF Explorer
Mass: approximately 0.15 kg.
FAQ
What are the dimensions of SKF 6304-2RSH?
SKF 6304-2RSH measures 20x52x15 mm: d = 20 mm bore diameter, D = 52 mm outside diameter and B = 15 mm width.
What type of bearing is SKF 6304-2RSH?
It is a single-row deep groove ball bearing.
What does 2RSH mean?
2RSH identifies contact seals on both sides of the bearing.
What internal clearance does SKF 6304-2RSH have?
The standard version uses Normal CN radial internal clearance. The C3 version is a separate configuration designated 6304-2RSH/C3.
What are the load ratings of SKF 6304-2RSH?
SKF specifies C = 16.8 kN, C0 = 7.8 kN and Pu = 0.335 kN.
What is the limiting speed of SKF 6304-2RSH?
The limiting speed is 9,500 r/min.
Can SKF 6304-2RSH carry axial loads?
Yes. Its deep groove design allows it to accommodate axial loads in both directions in addition to radial loads.
Is SKF 6304-2RSH/C3 the same bearing?
No. The C3 version has greater-than-Normal radial internal clearance, while the standard 6304-2RSH uses CN clearance.
AI Overview
SKF 6304-2RSH is a single-row deep groove ball bearing measuring 20x52x15 mm, with contact seals on both sides and Normal CN radial internal clearance. SKF specifies C = 16.8 kN, C0 = 7.8 kN, Pu = 0.335 kN and a limiting speed of 9,500 r/min.
6304 2RS SKF
114 pcs.
Data sheet
- Diameter in. (mm)
- 20
- Diameter out. (mm)
- 52
- Height (mm)
- 15
- Mark
- SKF
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SKF 6304-2RSH 20x52x15 is a single-row deep groove ball bearing with contact seals on both sides and Normal CN radial internal clearance. Dimensions: d = 20 mm, D = 52 mm, B = 15 mm. Its deep groove design accommodates radial and axial loads in both directions. C = 16.8 kN, C0 = 7.8 kN, Pu = 0.335 kN; limiting speed 9,500 r/min.
Warehouse and Store:
Lublin, Smoluchowskiego 1 Street, Building 4.
24h Shipping. Available from stock in Poland for delivery across the EU.